Cell Parameters Output
The different cell parameters and their output files are described using examples.
Figure 1 shows an example of a typical urban configuration.
![](../../../../images/winprop/user_guide/propagation_models/typical_urban_config.png)
The base stations TRX_1a and TRX_1b use the same channel #50, TRX_2a and TRX_2b use the same channel #60 and TRX_3 uses channel #70. All base stations have the same transmit power.
Co-Channel Interference (CCI) (.fpc)
- The individual CCI computation:
This computation is done for each channel for the whole prediction area. The CCI is only computed if two base stations use the same channel. The result files are named: output-filename_Cxx.fpc, where
xx
is the channel number.Figure 2 shows the results for the two transmitter pairs. The scale is the same as that used in Figure 3.
Figure 2. Individual CCI computation: TRX 1a and 1b (left), and TRX 2a and 2b (right).
- The total CCI computation:
The CCI is computed for all channels respectively where the individual channel is best server. The result files are named output-filename.fpc. shows an example of a .fpc file:
![](../../../../images/winprop/user_guide/propagation_models/cci_total.png)
The total CCI is always computed in the areas where the individual channel is the best server channel.
Best Server (.fpb)
A best server plot shows the channel number of the channel that provides the maximum received power at the individual point. Figure 4 shows the result.
![](../../../../images/winprop/user_guide/propagation_models/best_server_fpb.png)
Maximum Value (.fpm)
For each receiver pixel a prediction of each base station is computed. The maximum value of the received power in dBm at each pixel is chosen and displayed.
![](../../../../images/winprop/user_guide/propagation_models/maximum_value_fpm.png)
Superpose transmitters (.fpa For Received Power In [dBm] and .fpe For Field Strength In [dBµV/m])
For each channel the prediction of all base stations with this channel number are accumulated and the result is written in a file for each channel (the file name gets an extension, for example, _C60 for channel 60).
![](../../../../images/winprop/user_guide/propagation_models/prediction_ch60.png)
Coverage Degree (Number of Channels Higher Than Threshold) (.fpn)
For every prediction pixel, the number of base stations where the predicted received power is above a user-defined threshold is computed. This threshold can be changed in the prediction parameter section of the ProMan. The result reflects the coverage degree in the individual positions.
Figure 7 shows the coverage degree result. It is visible that in some areas a bad coverage (degree of 0) is achieved.
![](../../../../images/winprop/user_guide/propagation_models/coverage_degree.png)