G- Coverage Production Ex G
Exhibit G
Coverage Prediction
The City of Miami Beach, Florida
800 MHz ASTRO Simulcast Trunked Radio System
Coverage
f
Coverage Prediction Report
t
Methodology
System coverage prediction is based on knowledge of the propagation of radio signals, and the
ways in which they are attenuated as they travel through the atmosphere, over terrain, through
trees, around buildings, and around various obstacles. Predicted coverage is dependent on
parameters of both the system and the environment. The major factors are listed below:
System Factors
. Transmitter Power
. Receiver Sensitivity
. Antenna Gains
. Transmission Line Loss
. Antenna Height
Environmental Factors
. Noise
. Tree Density
. Buildings
. Terrain Variations
. Atmospheric Conditions
These parameters are included in the system gains and losses that yield the signal strength (and
coverage) at the desired locations. To accomplish the task of coverage prediction, theoretical
coverage models have been computerized to provide predictions that are more accurate. Several
theoretical models have been tested by Motorola and have been found to be useful in predicting
coverage. Our calculations are based upon models that are described in the following references:
Radio Propagation for Vehicular Communications," Kenneth Bullington, IEEE Transactions on
Vehicular Technology, Volume VT-26, Number 4, November 1977.
"Field Strength and It's Variability in VHF and UHF Land-Mobile Radio Service," Y oshihisa
Okumura, Review of the Electrical Communication Laboratory Volume 16, Number 9-10,
September and October 1968.
MOZAIK Coverage Prediction Tool
To arrive at the predicted coverage, the system and environmental parameters are detennined for
your system by a Motorola Field Engineer familiar with your tertian and environmental
conditions. The Motorola Field Engineer then uses the Motorola propagation program
MOZAIK.
The MOZAIK program gets its name from the ability to compute coverage on separate tiles rather
than along a finite number of radials. Propagation "layers' can also be computed and observed
separately. Thus, the tiles and layers make up propagation mosaic. MOZAIK utilizes a
topographical database that has been generated by the U.S. Geological Survey.
- M07"OROLA
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CSA Coverage Prediction Description 4-22~.doc Revieoa 'pFiI 21, 2003 RCC CeFle~lIaAl& lAG
Page6-1 I
The City of Miami Beach, Florida
800 MHz ASTRO Simulcast Trunked Radio System
Coverage
The MOZAIK program has the ability to use the full USGS (United States Geodetic Survey) 3
arc second database resolution on a tile basis when required. The increased resolution and the
MOZAIK method of tiling provide an extremely accurate and timesaving coverage model. In
addition, the Field Engineer utilizes the Motorola Simulcast Simulator that provides an analysis of
audio quality and capture/delay effects from simulcasting two or more sites. Motorola has
determined that simply illustrating overlapping coverage from multiple simulcast sites does not
provide an accurate indication of simulcast coverage. Overlapping coverage from several sites
increases reliability but can decrease audio quality. The Simulcast Simulator is a powerful tool for
the Motorola Systems Engineer to determine the optimum location of simulcast sites, which will
provide DAQ-3.4 (Delivered Audio Quality 3.4) level for simulcast systems. The Mozaik
Simulcast Simulator is a powerful tool for the Motorola Systems Engineer to detennine the
optimum location of simulcast sites for the City of Miami Beach.
Unfortunately, even the best database can contain a certain amount of errors. These errors can be
caused by a number offactors such as:
. Source Information - Terrain and environmental databases are primarily derived from
existing government map information so it is expected that minor errors may occur.
Consequently, any errors in the database will be carried over to the maps.
. Database Development Process - The process of creating digitized map information
involves both sophisticated computer technology and human participation. Each has the
potential for introducing errors into the databases. Limitations in the digitizing algorithms
and computer hardware problems are just two examples of potential error sources. In
addition, as part of the process, the database developer is required to make a certain
amount of judgment calls,.which could lead to errors. Fortunately, most errors are caught
during the data verification phase. However, certain errors may not be detected and can
be incorporated in the database.
. Age - The physical world is constantly changing. Natural phenomena such as
earthquakes, volcanoes, fires, storms, etc., change the topography and environmental
factors. Over time, landfills are created; hills are leveled; roads are built; communities are
developed; and large buildings are constructed. Not all of these changes may be captured
in the database.
Consequently, any coverage prediction offered by Motorola is limited to the location where the
database accurately depicts the terrain and environmental conditions along the path between the
transmitter and receiver.
The Field Engineer examines the results to verifY the accuracy of the computer output based on
knowledge of the application and the environmental conditions. Motorola has Field Engineers
based in South Florida that have successfully implemented many of the Motorola trunking systems
currently in operation. This understanding of the local environment is critical to coverage
prediction. The proposed system for the City of Miami Beach has been designed by resident field
I) MOTOROLA
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CSA Coverage Prediction Description 4-22-03.doc Revised ~pFil 21, :lOll:! RCC CSR6wItaAle IRe
Page6-2 I
The City of Miami Beach, Florida
800 MHz ASTRO Simulcast Trunked Radio System
Coverage
engineers who know how Motorola's product line can be applied to best meet the Public Safety
communication for the city.
Coverage Reliability
Since no system coverage can be 100% reliable there will always be particular times and locations
where signal strength is below that needed for satisfactory performance. These locations of
unsatisfactory performance are often predicted in a coverage study. However, the coverage study
is not there are areas that cannot be predicted due to greater than average tree density, building
density, noise, atmospheric conditions, or terrain variations not accounted for in the reference
data.
Since these conditions exist and signals fade due to these environmental and terrain factors,
coverage must be described statistically in the terms of a percentage of locations that exhibit
reliable communications. Reliability of the signal strength is given in percentage within the
coverage area predicted. A system predicted to have 97% area coverage reliability is 97% reliable
within the area encircled by the coverage contour.
For this proposal, Motorola has included two coverage maps, Talk-in and Talk-out, that depict
95% Contour and 97% area coverage for the locations enclosed within the Miami Beach
jurisdiction. The Talk-in map predicts coverage from a XTS3000 Portable with Public Safety
Microphone worn at the shoulder transmitting from within a Large Building (18 dB loss or less
loss). The Talk-out map predicts coverage from a XTS3000 Portable with the standard Y:z A
antenna worn at hip level receiving while in a Large Building.
For example, if the area is divided uniformly into 600 locations, then 97% of these locations are
predicted to provide the CATP Target Signal Level or better and 3% of these location would
provide worse than the CATP Target Signal Level. It should be clarified here that an actual
verification of satisfactory coverage performance must be based on a larger number of locations
consistent with good statistical practice. The CATP (Coverage Acceptance Test Plan) for the City
Miami Beach would contain over 600 grid locations evenly distributed over the entire jurisdiction
as depicted on the coverage maps. Any grid that shows the predicted reliability of less than 97%
on the coverage maps shall not be included in the CATP. An example of the CATP grid map is
shown on the following page.
_ MOT'OROLA
. intelligence evtJrywhere"
CSA Coverage Prediction Description 4-22-03.doc Fl8'~68l1 'pAI 21, 200:1 FlCe CSR811IlaRl& IRe
Page6-3 I
The City of Miami Beach, Florida
800 MHz ASTRO Simulcast Trunked Radio System
Coverage
Example City of Miami Beach CATP Grid Map
Over 600 Grids at 0.125 x 0.125
fa MO'rOIIOLA
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CSA Coverage Prediction Description 4-22-03.doc Re,'j68E1 ApFiI 21 , 2003 RCC CBR6111laRl6 IRS
Page6-4 I
The City of Miami Beach, Florida
800 MHz ASTRO Simulcast Trunked Radio System
Coverage
Circuit Merit
Motorola has accounted for the users being in dynamic situations and adjusted our prediction to
provide for DAQ-3.4 (Delivered Audio Quality-3) performance in a moving faded environment.
Audio quality level DAQ-3.4 in a faded environment requires a higher signal level than in a
stationary condition. The industry standard CM and the Motorola DAQ audio charts are listed
below.
Delivered Audio Oualitv Grade of Circuit Performance
DAQI Unusable, Speech present but unreadable
DAQ2 Understandable with considerable effort
Frequent repetition due to NoiselDistortion
DAQ3 Speech understandable with slight effort. Occasional
reoetition required due to NoiselDistortion
DAQ3.4 Speech understandable without repetition
Some NoiselDistortion
DAQ4 Speech easily understood
Occasional NoiselDistortion
DAQ 4.5 Speech easily understood
Infrequent NoiselDistortion
DAQ5 Soeech easily understood.
Circuit Merit
CMl
CM2
CM3
CM4
CM5
(I MOTOROLA
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CSA Coverage Prediction Description 4-22-03.doc RIl"ieed .'.pfil 21, 2QQ3 RCC CaRe~IIaAle IRS
Page6-5 I
The City of Miami Beach, Florida
800 MHz ASTRO Simulcast Trunked Radio System
Coverage
Simulcast Coverage Performance
Motorola predicts simulcast coverage using a method that aggregates signal strength (signal to
noise) and audio phase angle (delay) throughout the complete predicted coverage area. All areas
within the predicted coverage contour are analyzed for the combined effect of signal strength and
phase angle from all simulcast transmitters in the system. Any area that exhibits an aggregate of
signal strength and phase angle that falls below the audio circuit merit and .reliability is identified
in the coverage predictions and noted as an area ofless than acceptable petformance.
System Configuration and Antenna Sites
The predicted coverage maps are based on the availability of the sites located at the coordinates
specified below and with the antenna site parameters shown below.
Antenna Site Locations
Site Site Name Location Ground Ground
Number Elevation Structure
la Reservoir Rx 250 51' 35.5"N, 800 7' 34.4"W 6.6 Feet 250 Feet
Ib Reservoir Tx 25051' 35.5" N, 800 7' 34.4" W 6.6 Feet 230 Feet
2a Tower 41 Rx 25048' 52.3" N, 8007' 33.1" W 3.9 Feet 220 Feet
2b Tower 41 Tx 25048' 52.3" N, 8007' 33.1" W 3.9 Feet 220 Feet
3a Fire Station 2 Rx 25047' 58.3" N, 8007' 52.1" W 4.9 Feet 200 Feet
3b Fire Station 2 Tx 25047' 58.3" N, 8007' 52.1" W 4.9 Feet 220 Feet
4 Rebecca Towers Rx 25046' 12" N, 800 8' 20" W 3.3 Feet 135 Feet
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CSA Coverage Prediction Description 4-22-03.doc FleYi6ea ^ pRI 21, 2003 FlCC CeAElwllaFll6 1116
Page6-6 I
The City of Miami Beach, Florida
800 MHz ASTRO Simulcast Trunked Radio System
Coverage
Antenna Site Equipment Parameten
The effective receiver sensitive incorporates the gains and losses of the antenna; tower mounted
amplifier, transmission line, multi-coupler, and receiver sensitivity.
Item Parameter
Quantar Power lOOWatts
Quantar Sensitivity -1l7.4dBm
Site I: Reservoir
Item Receive
Antenna Height 250Feet
Site HAAT 6.6 Feet
Antenna Mounting Tower Top
Antenna Gain 13.3dB Omni Pattern
Item Transmit
Antenna Height 230Feet
Site HAA T 6.6 Feet
Antenna Mounting Tower Side
Antenna Gain 13.3dB Omni Pattern
41.) MOTOROLA
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Page6-7 I
The City of Miami Beach, Florida
800 MHz ASTRO Simulcast Trunked Radio System
Coverage
Site 2: Tower 41
Item Receive
Antenna Height 215 Feet
Site HAA T 3.9 Feet
Antenna Mounting RoofTop
Antenna Gain 13 AdB H Pattern
Item Transmit
Antenna Height 215 Feet
Site HAAT 3.9 Feet
Antenna Mounting Tower Side
Antenna Gain 15 AdB H Pattern
Site 3: Fire Station 2
Item Receive
Site HAAT 180Feet
Antenna HAA T 4.9 Feet
Antenna Mounting Tower Side
Antenna Gain 13 AdB H Pattern
Item Transmit
Antenna Height 200Feet
Site HAAT 4.9 Feet
Antenna Mounting Tower Top
Antenna Gain 13 AdB H Pattern
41.) MOTOROLA
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CSA Coverage Prediction Description 4-22-03.doc Rll'oised ^pFiI21, ::!003 RCC C9Fl6wllaAls IRS
Page6-8 I
The City of Miami Beach, Florida
800 MHz ASTRO Simulcast Trunked Radio System
Coverage
Site 4: Rebecca Towers
Item Receive
Antenna Height 130Feet
Site HAAT 3.3 Feet
Antenna Mounting RoofTop
Antenna Gain 13.3dB Omni Pattern
Portable Radio Configuration:
Portable antenna performance can vary widely depending on the type of antenna used and the
location of the portable antenna on the user's body. The coverage maps included for portable
radios show the coverage predicted for a 3Watt ASTRO XTS 3000 portable unit using a Public
Safety Speaker Microphone antenna.
Talk-in Portable Radio Configuration Parameter
Portable Power 3Watts
Portable Antenna Type Public Safety Speaker Microphone Antenna
worn at the shoulder level
Effective Radiated Power ERP 27.3dBm
Talk-out Portable Radio Configuration Parameter
Portable Sensitivity -1l9.0dBm
Portable Antenna Type Standard Y2 1. Antenna worn at hip level
Effective Portable Sensitivity -109.0dBm
41) MOTOROLA
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CSA Coverage Prediction Description 4-22-03.doc R8';sed ApFiI 21,2003 RCC C9R9~.aRl& IRS
Page6-9 I
The City of Miami Beach, Florida
800 MHz ASTRO Simulcast Trunked Radio System
Coverage
General Building Type Definition
The building loss used in this coverage prediction for the City of Miami Beach is l8db. This is
referenced to the general description of a large building. Any area within a building that exceeds
l8dB of shall be excluded from the coverage guarantee without regard to the building type.
. Large: Buildings with lldB to l8dB of loss. Large downtown building, large commercial
building, emergency shelters, or large enclosed shopping malls (3 stories or more).
. Medium: Buildings with 6dB to lldB ofloss. Small to medium size stores, small apartment
buildings, or a small to medium size factory or office buildings (less than three stories)
. Light: Buildings with OdB to 6dB ofloss. Residential buildings (1 and 2 story houses) and
other small commercial buildings
The coverage predictions for building locations do not include locations such as elevators;
basements below ground level, tunnels, bank vaults, x-ray rooms, and other locations shielded by
metal walls or with heavy construction and with no windows or doors. Since building loss can
vary significantly depending on the construction of the building, the coverage maps do not predict
nor grantee coverage within any specific type of building.
If coverage is required within a specific building, then a field survey will be necessary after system
implementation and optimization to detennine the specific losses associated with the structure. In
buildings exceeding l8dB of loss where coverage is required over a defined area, a passive
antenna system or active Bi-Directional Amplifier (BDA) system can be employed to resolve the
coverage problem. Motorola will provide quotations for the equipment and installation to the City
of Miami Beach as required.
41) MO'I"OROLA
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CSA Coverage Prediction Description 4-22-03.doc Re'1sea ^pFiI21. 2003 RCC C9A6wIleRls IRS
Page6-10 I
CITY OF MIAMI BE:ACH-800 MHz SYSTEM- STATEMENT OF WoRK
3.4 Radio Communications Coverage
3.4.1 Coverage Reliability
The Pi_," shall supply coverage maps to depict 97 percent area coverage for the
locations enclosed within the predicted coverage contour for portable and mobile radio
coverage.
Coverage maps shall be provided for mobile and portable configurations. For the
purpose of coverage performance testing, the worst case of the portable in-building talk
out or talk back configuration shall be confirmed. The Contractor and the City shall
mutually agree on the performance depicted in the coverage prediction.
3.4.2 Received Signal and Circuit Merit
The Contractor must account for the users being in dynamic situations and adjust their
prediction to provide for DAQ 3.4 performance in a moving faded environment using
TIAlEIA TSB-88 methodology. DAQ 3.4 level audio quality in a faded environment
requires more signal than in a stationary condition. Below is the TIA TSB-88 standard
DAQ audio chart:
LEVEL Description (TIA TSB88) SINAD equivalence
(TIA TSB-88)
DAQ-1 Unusable, speech present but Less than 8 dB
unreadable.
DAQ-2 Understandable with considerable 12+/-4dB
effort. Frequent repetition due to
noise/distortion.
DAQ-3 Speech understandable with slight 17+/-5dB
effort. Occasional repetition required
due to noise/distortion.
DAQ-3.4 Speech understandable with repetition 20 +/- 5 dB
only rarely required. Some
noise/distortion.
DAQ-4 Speech easily understood. Occasional 25 +/- SdB
noise/distortion.
DAQ-4.5 Speech easily understood. Infrequent 30 +/- 5 dB
noise/distortion.
DAQ-5 Speech easily understood. Greater than 33 dB
RCC Consultants, Inc.
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CIlY OF MIAMI BEACH -800 MHz SYsTEM - STATEMENT OF WoRK
3.4.3 Simulcast Coverage Performance Prediction
The Contractor shall predict simulcast coverage using TIA TSB-88 methodology which
aggregates signal strength (signal to noise) and simulcast delay spread throughout the
complete predicted coverage area. All areas within the predicted coverage contour are
to be analyzed for the combined effect of signal strength and simulcast delay spread
from all simulcast transmitters in the system. Any area that exhibits an aggregate of
signal strength and delay spread that falls below that required for audio circuit merit and
reliability shall be identified in the coverage predictions and noted as an area of less than
acceptable perfonnance.
3.4.4 System Configuration/Antenna Sites
Site Site Name Location Ground Structure
# Coordinates Elevation Height
(Feet) (Feet)
1 Rebecca Tower Receive Only 250 46" 12" N 135
80008' 20" W
2 Fire Station Two 250 4T' 58.3" N 4.9 200
80007' 52.1"W
3 Tower 41 25048' 52.3" N 3.9 215
800 07' 33.1" W
4 7rJh Street 25051' 35.5" N 6.6 250
80007' 34.4" W
3.4.5 Equipment Parameters
3.4.5.1 General Parameters Subscriber Equipment
The parameters are as follows:
A Mobile power 35 watts (Public Safety)
B. Mobile antenna type 3dB
C. Portable power 3 watts
D. Portable ant type (1) 112-wave end or center fed, whip (Worst
case talk out)
RCC Consultants, Inc.
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CITY OF MIAMI BEACH~OO MHz SYSTEM- STATEMENT OF WoRK
F.
G.
Faded Mobile Sensitivity
Faded Portable Sensitivity
Public safety speaker mic. ant (worst case
talk back)
(DAO 3.4)
(DAO 3.4)
E.
Portable ant type (2)
3.4.6 Antenna Site Equipment Parameters
Site # 1 - Rebecca Tower (Receiver Only)
Parameter Transmit Receive
Antenna Height na 135 feet
Antenna Mounting na Roof
Antenna Gain na 12.0 dB
5ite # 2 - Fire Station Two
Parameter Transmit Receive
Antenna Height 200 feet 180 feet
Antenna Mounting Top Side
Antenna Gain 12.0 dB 13.4 dB
ERP 580 watts (preliminary, as
licensed)
Site # 3 - Tower 41
Parameter Transmit Receive
Antenna Height 215 215
Antenna Mounting Roof Roof
Antenna Gain 13.4 dB 13.4 dB
ERP 980 watts (preliminary, as
licensed)
Site # 4 75u, Street
Parameter Transmit Receive
Antenna Height 250 230
Antenna Mounting Top Side
Antenna Gain 12.0 dB 12.0 dB
ERP 525 watts (preliminary, as
licensed)
RCC Consultants, Inc.
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CllYOFMlAM1 BEACH-800 MHz SYSTEM- STATEMENT OF WoRK
3.4.7 Mobile Radio Configuration
The coverage maps included for mobile radios are to show the coverage predicted for a
35 watt mobile radio unit. This prediction shall be based on the mobile radio being
installed in standard automobiles that are approximately five feet in height. For
purposes of modeling coverage, the mobile antenna should be mounted on the roof of
the vehicle.
3.4.8 Portable Radio Configuration
Portable antenna performance can vary widely depending on the type of antenna used
and the location of the portable antenna on the user's body. The coverage maps
included for portable radios must show the coverage predicted for a 3 watt portable unit
using a 1/2-wave flexible whip antenna at hip level and a 3 watt portable unit using a
public safety speaker microphone antenna. Base to portable talk out coverage shall be
analyzed with the portable unit at hip level using the 112-wave flexible whip. Portable to
base talk back coverage is analyzed with a public safety speaker microphone antenna.
3.4.9 Inside Building and On-Street Coverage
The City of Miami Beach digital simulcast system shall be guaranteed to provide an 18
dB margin to meet the minimum reauirements of heavy building coverage.
Building Type Definition:
Heavy:
Large downtown building, large commercial building, condominium, hotel.
or large enclosed shopping mall (four stories or more). Loss is typically 18
dB or more.
Medium:
Small to medium size stores, small apartment buildings, or a small to
medium size factory or office buildings (less than four stories). Loss is
typically 11 dB or more.
Residential buildings (one and two story houses) and other small
commercial buildings. Loss is typically 6 dB or more.
Light:
3.4.10 Coverage In Specific Buildings
Except as specifically noted, the coverage prediction for "in building" locations need not
include locations such as elevators, basements below ground level, tunnels, bank vaults,
and other locations shielded by metal walls or with heavy construction and with no
windows or doors. Since building loss can vary significantly depending on the
construction of the building, the coverage maps need not predict coverage within any
RCC Consultants, Inc.
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CITY OF MIAMI BEACH-800 MHz SYSTEM- STATEMENT OF WoRK
specific wilding. If coverage is needed in a specific building, then a field survey will be
conducted.
The City has specifically addressed, in the SOW, coverage requirements for several
buildings. These buildings are:
A Mt Sinai Hospital (provide BOA as necessary).
B. South Shore Hospital (provide BDA as necessary).
C. Police Headquarters, 1100 Washington Ave (provide BDA as necessary).
D. Fountainbleu Hilton Hotel (verification only).
With the three-site simulcast system, the Contractor shall guarantee coverage into the
specific buildings listed above, with the exception of Fountenbleu Hotel, where
verification of a hotel-owned intemal BOA system performance will be performed at no
risk to the Contractor.
In each of these structures, the testers shall test only in the ground level floors and
emergency room locations unless otherwise stated. A minimum of 25 tests shall be
performed in random locations throughout each structure.
A passing score will be 97 percent. If a structure fails any tests during the initial minimum
of 25 test locations, the test regimen shall be increased to 100 locations. A passing
score will be 97/100 locations.
3.4.11 Coverage Acceptance Test Plan
This Coverage Acceptance Test plan is designed to demonstrate that the RF coverage
for units proposed to the City will meet the reliability requirement as agreed to by the City
and the Contractor. A quantitative method of measurement will be used which involves
the use of a calibrated test receiver, analog to digital converter, a portable computer, and
a Global Positioning System (GPS) receiver. The GPS receiver will be used to
determine the latitude, longitude, and speed of the test vehicle. The computer will be
loaded with a mapping database that includes local streets, rivers, railroads, and other
features. The computer will save the measured data for each grid that has been
defined.
This test will be used to evaluate coverage provided by the proposed system for units in
the following configurations:
A Base to portable talk out to a unit with flex antenna at hip level inside 18 dB
buildings.
RCC Consultants, Inc.
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CrTYOF MIAMI BEACH-800 MHz SYSTEM- STATEMENTOFWORK
The automated test shall simulate the conditions above through the use of the
adjusted ATP target level in the table below.
B. Portable to base talk in from a unit with a public safety speaker mic. antenna.
The Contractor shall Il'ovide a report based upon extrapolation of the collected
data to simulate the conditions of portable talk back. If known conditions of
outside interference to fixed receivers exist, they shall be indicated in the report
for discussion with the City. The effects of such interference shall be reported,
but will not be considered for the evaluation score.
The syStem shall be tested in the IMBE diaital mode of operation.
The acceptance criteria will be based on the demonstration that a signal equivalent to -
DAQ 3.4 is available at an digital receiver input. This portion of the test will determine
the RF signal levels within City. Uniformly distributed grids will be evaluated over the
coverage areas described above. Ninety-seven percent of the grids tested I1'1.Ist yield
the required ATP target signal level. (See calculation of ATP Target for inside 18 dB
buildings, In the following tables.)
Configurations outlined above will be evaluated based upon reference field intensity
measurements acquired by the calibrated measurement equipment. The test set shall
be based on a calibrated test receiver inside a vehicle with a 114-wave antenna mounted
on the outside center of the roof of the vehicle. During the field test, the automobile will
travel to each of the test locations. At each location, outbound signal level
measurements will be captured by the calibrated measurement equipment and these
measurements will be used as reference levels upon which all other levels will be
determined. During the analysis phase, the value for each configuration will be obtained
through extrapolation to compensate for any system gain differences between the test
equipment and each of the configurations to be evaluated.
Raw test data shall be provided to the City for independent analysis by the City's
consultant. The raw test data shall contain the following:
A longitude and latitude of each test grid.
B. Raw data string of all RF signal samples or mean RF signal level and standard
deviation corresponding to each test grid.
The file format may either be a text (.bet), (.xls), or other format importable into an
EXCEL spreadsheet.
The following table indicates the values to be used to determine the ATP target
reference signal level for each configuration. These represent the difference in system
RCC Consultants, Inc.
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CITY OF MIAMI BEACH~OO MHz SYSTEM- STATEMENTOFWORK
gain between the calibrated measurement equipment and each of the configurations.
These values will be used in the analysis phase to evaluate acceptance.
RCC Consultants, Inc.
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CITY OF MIAMI BEACH -800 MHz SYSTEM. STATEMENT OF WORK
Digital C4FM IMBE DAQ 3.4 Signal Threshold
Portable Antenna Degradation Relative To Mobile Test
Digital C4FM 1M BE Faded Mobile Sensitivity (DAQ 3.4 · 2.0o/oI16.2dB) · -106.3 dBm *
Mobile antenna degradation
Mobile line loss
Portable antenna factor
Adjusted portable antenna factor
Receiver faded sensitivity (DAO 3.4)
Adjusted portable antenna factor
Portable with SMA outside (DAO 3.4)
Portable In heavy 18 dB buildings
Receiver threshold (DAO 3.4)
Heavy 18 dB building factor
Portable In heavy building (DAQ 3.4)
SMA
-1.0 dBd
-1.8 dB
+7.5 dBd
(+4.7 dB)
-106.3 dBm
+4.7 dB
(-101.6 dBm)
Flex WhlD at HID
-1.0 dBd
-1.8 dB
+10.9 dBd
(+8.1 dB)
-106.3 dBm
+8.1 dB
(-98.2 dBm)
-101.6 dBm
+18.0 dB
(-83.6 dBm)
-98.2 dBm
:t1.a...de.
(-80.2 dBm) ATP
Target For talk out.
Digital EDACS FM IMBE DAQ 3.4 Signal Threshold
Mobile antenna degradation
Mobile line loss
Portable antenna factor
Adjusted portable mtenna factor
Receiver faded sensitivity (DAO 3.4)
Adjusted portable antenna factor
Portable with SMA outside (DAO 3.4)
Portable In heavy 18 dB buildings
Receiver tlTesholcl (DAO 3.4)
Heavy 18 dB building factor
Portable In heavy building (DAQ 3.4)
Portable Antenna Degradation Relative To Mobile Test
Digital FM IMBE Faded Mobile Sensitivity (DAQ 3.4 = 2%115.7 dB) = -107.6dBm *
SMA Yo Wave WhlD at HID
-1.0 dBd -1.0 dBd
-1.8 dB -1.8 dB
+10.0 dBd +10.0 dBd
(+7.2 dB) (+7.2 dB)
-107.6 dBm -107.6dBm
+7.2 dB +7.2 dB
(-100.4 dBm) (-100.4 dBm)
-100.4 dBm
+18.0 dB
(-82.4 dBm)
-100.4 dBm
:!:.1!UIfl.
(-82.4 dBm) ATP
Target For talk out.
RCC Consultants, Inc.
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CITY OF MIAMI BEACH-800 MHz SYSTEM - STATEMENT OF WoRK
3.4.12 Coverage Testing Methodology
A This test will be an RF signal strength measurement test using a calibrated
mobile receiver to measure raw outbound signal from the simulcast base
stations.
B. Computers provided by the Contractor in the automobile will be used to gather
signal strength data.
C. The City will provide the vehicles used for the test.
D. An antenna will be connected to the antenna port of a calibrated Contractor-
supplied test receiver monitoring the transmission from a repeater at each base
station radio site. The antenna will be mounted on the outside center of the
automobile roof. An analog to digital converter device will be connected between
the signal strength indicator port of the mobile and the computer. A computer
program will manage each gathering session and store the collected data on
disks for later analysis. Following the completion of each day's test session, a
digital copy of the drive test data shall be provided to the City or its consultant.
E. A quas..random method of selecting evenly and uniformly distributed test
locations will be used. The indicated required coverage areas will be divided into
evenly distributed grids. The computer will display the grid structure as
described, and overlay it on the screen on top of a base map showing the roads.
The computer will provide a visual indication that data has been collected in a
grid.
F. Signal strength at each location will be determined by taking 500 evenly timed
data measured over a distance of 40 wavelengths. The average of these
measurements will be computed to determine a signal level representative of the
test location. An average of multiple samples is used rather than a single
measurement to ensure that the measurement is not biased by taking a single
sample that might be at a peak or null point on the radio wave. The resulting
average will be referred to as the "Reference Grid level."
G. The "ATP Target Reference level" will be used, and through extrapolation,
receive signal levels will be determined for each of the test configurations. For a
particular configuration, if the receive signal level is equal to or greater than the
ATP Target Reference level, then the grid for that configuration will be declared
passed. If the extrapolated receive signal level is worse than the ATP Target
Reference level then the grid for that configuration will be declared failed. If 97
percent of the grids are determined to be passed grids for a particular
configuration, the coverage for that configuration will be declared passed. The
successful passing of each of the configurations will constitute the criteria for RF
signal strength co.rerage acceptance.
RCC Consultants, Inc.
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CITYOf' MIAMI BEACH-800 MHz SYsTEM- STATEMENTOf' WoRK
3.4.13 Prerequisites and Preparation
One automobile and driver supplied by the City will be utilized for this test. The
Contractor will provide the calibrated measurement equipment for the test. The
Contractor will conduct the testing procedures. A representative for the City will
accompany the test team, and the team members will be detennined by the City prior to
the testing.
3.4.14 Analyzing Data and Report Generation
During the field test, a computer file is generated which includes the signal level
averages for each test location. This data will be placed in a computer spreadsheet
during the analysis phase and summaries will be computed for each of the test
configurations.
A report outlining the test and test results will be submitted to the City. The time frame
for the report submission will be agreed to by City and the Contractor.
The successful completion of the automated coverage test will demonstrate sufficient
signal strength to provide 18 dB building coverage throughout 97 percent of the area
within the City.
3.4.15 Manual Delivered Audio Quality (DAQ) Test
It is generally accepted that digital audio quality is affected by a number of factors. The
most significant are the signal strength and channel bit error rate (BER). While the
automated test oould measure BER in an automated method, it would be necessary to
attenuate all of the system margin in the mobile test package. However, this still would
not accurately portray the real operating environment. Therefore, a manual DAO test will
be perfonned.
Separate manual portable radio talk out and talk back tests shall be conducted for
selected indoor locations within the City coverage area. The portable radio with speaker-
microphone-antenna (SMA) worn on the lapel shall be tested for talk in (portable b
base) and a portable at hip level shall be tested for talk out (base to portable).
The methodology of the delivered audio quality tests will be based upon the TIA TSB88
subjective descriptions. A two-way test message will be transmitted at each test location
and recorded by each listener. During the tabulation, the messages will be checked for
accuracy. Successful transmission of the test message will be the sole evaluation
criterion for the manual DAO test.
Successful completion of the manual DAO test wil demonstrate the proper operation of
the digital simulcast system with respect to RF faded signal thresholds and bit error
tolerance.
RCC Consultants, Inc.
3-17
CITY OF MIAMI BEACH-800 MHz SYsTEM. STATEMENT OF WoRK
Buildings in each grid will be tested through the transmission of a standardized test
message. Buildings failing the test will be later evaluated to determine the building loss
by measurement of the available signal strength outside of the building and comparing it
to the signal strength measured within the building. A building which fails the DAQ 3.4
test shall be included in the test scoring if the building loss is found to be 18 dB or less.
A building which fails the DAQ 3.4 test shall be excluded from the test scoring if the
building loss is found to be Qreater than 18 dB. In this case, the City may select an
alternative building in the same grid for later testing, as the initially selected building
demonstrates a loss of more than 18 dB.
Building losses will be established by measuring the signal outside a building and a
signal measured inside a building. Measurements outside buildings will be gathered by
placing the automated measuring equipment on a cart or using a handheld signal
strength measuring device. The measurement will be along at least three sides of the
building being tested (as far as practical limits allow). The mean of these signal
measurements will establish the outside signal level. The measurement will then be
moved inside the building. At locations where the voice quality test fails, the signal will
be measured at that point b obtain the in-building signal strength for that specific test
point.
3-19-03> It has been aQreed that the exhibit H will include the City of Miami Beach SOW
section on coveraae testina. Motorola proposes to include the followino clarifications:
Buildino losses (SOW 3.4.15): Buildino losses will be established bv measurino the
sianal outside a buildina and a sianal measured inside a buildino. The outside measure
will include 4 sides of the buildinQ (as lona as it is practical) and will be recorded as the
averaae of the two hiahest readinas.
3.4.16 Coverage Performance Guarantee
The Contractor shall guarantee RF coverage performance in accordance with the
requirements of this document. A minimum of 97 percent of the test locations shall
provide a voice quality of DAQ 3.4 or better as determined by the test methodology set
forth in this document. If the RF coverage performance of the simulcast trunked radio
system supplied by the Contractor fails to meet the coverage requirements stated in this
document, the Contractor shall modify or otherwise cause the system(s) to meet the
minimum requirements of this document at no cost (direct or indirect) to the City. If
corrections to the system are required, all coverage tests will be repeated as necessary
for any portion of the system determined by the City to have potentially been impacted
by the correction work done by the Contractor. The City retains the option to require that
all coverage tests be repeated in the event that the simulcast system requires
modification or repairs during the conduct of any testing.
RCC Consultants, Inc.
3-18
CITY OF MIAMI BEACH-800 MHz SYSTEM. STATEMENT OF WoRK
3.4.17 Test Location
A statistically significant number of buildings shall be randomly chosen as test locations
within the grids of the City coverage area. If buildings do not exist within the grid, then
the test shall be conducted from inside of a passenger vehicle and duly noted.
Tests will be conducted within typical buildings having 18 dB or less building loss.
These are described as heavy density or large type structures.
As described previously, random building locations which demonstrate greater than 18
dB building loss will be excluded as test points if the building fails but will be retained as
part of the test results if the building passes.
Test locations within buildings will be selected by the field tester and will fairly simulate
locations typically encountered by public safety personnel. By way of example, but not
of limitation, tests in apartment complexes will be conducted in the hallways or stairwells
of said complexes. No attempt will be made to seek out unusually high-density areas
within buildings such as boiler rooms or underground parking areas.
One test location will be selected within each random building. The location will be on
the ground level of the building.
Talk in testing will be conducted with the use of a shoulder or lapel microphone with an
integral antenna (SMA type) mounted at shoulder level on the exterior of all clothing.
The shoulder/lapel microphone and antenna will be connected directly to a portable
radio that will be mounted in a belt holster. Additionally a portable with a flex whip
antenna will be mounted at hip level for talk out testing.
3.4.18 Test Methodology
A A "standard test message" is defined as the following sequence and will be
evaluated as one DAQ 3.4 test message:
1. Call.
2. Call acknowledgment.
3. In-bound message.
4. Out-bound message.
5. Sign off.
B. The test message will contain the following information:
RCC Consultants, Inc.
3-19
CITY OF MIAMI BEACH -800 MHz SYSTEM. STATEMENT OF WoRK
1. The inbound test message will consist of the words "Test Number"
concatenated with the following information:
a. Grid number.
b. Decimal point followed by test point within that grid.
c. Five randomly generated two-digit numbers.
As examples: "Test Number 345.1, 12,42,57, 14,88" is the first attempt
test conducted for the first location in Grid 345; and "Test Number 345.2,
13, 45, 58, 17, 89" is the second test attempt conducted for the first
location in Grid 345.
C. The outbound test message will consist solely of five randomly generated two-
digit numbers.
D. Random numbers will be generated by a computer for each district and
submitted to testers and dispatchers immediately before each test day. Neither
field testers nor dispatchers will have any knowledge of the othe"s random test
number sequences prior to the test.
E. The tester will sign off with "10-4"
F. If the test message is not clearly received by either the dispatcher or the tester,
the test sequence shall be repeated once more; with the tester allowed to move
the radio antenna from one side of their body to the other, without changing their
location. This shall be tagged on the score sheet as a second attempt. If this
second attempt is a pass, the test point passes.
G. If human error or distraction causes a transmission to be missed, the test
sequence will be repeated and a notation will be made in the score sheet.
H. The test cycle is complete.
After each day's test session, the original test forms will be delivered to the City's Project
Manager. Copies will be made for the City and the Contractor for immediate review.
After all test cycles are completed, the standardized test forms will be tabulated and
scored. A completed test cycle must contain the exact random test messages, correlated
with the test grid number, to be considered a pass. DAQ 3.4 will be achieved by the
reception of the exact random test messages by both the console operator and tester.
Testing will be conducted at a statistically significant number of grid locations (one point
per grid) within the City coverage area.
RCC Consultants, Inc.
3-20
CITY OF MIAMI BEACH-800 MHz SYSTEM- STATEMENT OF WORK
To eliminate possibility of error on the part of the testers, at tabulation, each failed test
message will be analyzed for patterns indicative of commonly confused number pairs.
For example, the pairs 59 versus 69 and 60 versus 16 are commonly confused. Such
number confusion will be corrected during the scoring, provided the error is obvious and
is the sole cause of failure of a given test sequence. The successful passing of 97
percent of the tested areas will constitute the criteria for acceptance of the DAQ test
(See Appendix B.)
3-19-03> It has been aQreed that the exhibit H will include the City of Miami Beach SOW
section on coveraQe testinQ. Motorola proposes to include the followil1Q clarifications:
a) DAQ test messaQe (SOW 3.4.18): Prior to the start of the DAQ test, Motorola and
the City of Miami Beach will revise the randomly Qenerated two-diQit numbers of
the test messages and analvze them to see if any of these numbers fall under a
commonlv confused oattem. If thev do so. the two-dioit oairs will be reolaced with
new randomly Qenerated oairs. If some oairs escape durinQ the test messaoe
oreoaration ohase, the confusion will be corrected durinQ the scorinQ, orovided
the error is obvious and it is the sole cause of the test sequence failure.
b) Limited time for DAQ test (SOW 3.4.18): The DAQ test will be limited to a 3O-day
period includinQ the orecaration and analvsis ohases. Exclusions to this limitation
will be reasonable hardships such as: acts of God (war, flood, fire), extreme
weather conditions (hurricanes): or communication syStem failures that impede to
continue with the testinQ.
c) Motorola is willinQ to accommodate durinQ the DAQ testinQ ohase the removal of
one carticular site for a period of time (8-12 hours) so that CMB can perform any
additional testinQ for information ourooses only. The test cannot be cart of the
A TP since site redundancy for coveraQe ourposes was not cart of the oriQinal
CMB SOW reauirements.
RCC Consultants, Inc.
3-21
Ci ty of Miami Beach
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