calccovpdl.m

It s a simulation for WCDMA Radio Networks.

%CALCCOVPDL   CALCCOVPDL calculates the area coverage probability for a DL dedicated 
%             channel. It uses the traffic load (i.e. BS transmit powers) which has 
%             been generated in npsw downlink iteration. 
%
%             The required transmit power per link is calculated in each pixel of the wanted
%             area and this is compared to the power limits per link which are 
%             calculated based on the input 
%             parameters. If the required power exceeds the limit in a pixel this pixel is 
%             considered to be in outage.
%
%             The maximum power per link maybe limited by two parameters. In RNC there 
%             are the parameters PtxDlAbsMax and CPICHToRefRabOffset. CPICHToRefRabOffset
%             defines the maximum power per link with respect to the CPICH Tx power so that
%             CPICHToRefRabOffset is subtracted from the CPICH power. For other services
%             the maximum powers are scaled based on Eb/No and bitrate differences to 
%             the refererence power. The limit calculated by this method is compared
%             to PtxDlAbsMax and the smaller one is chosen. By this method one can have, 
%             for different services, equal coverage (PtxDlAbsMax set very high) or 
%             different coverage (PtxDlAbsMax set corresponding
%             to the most power demanding service for which full coverage is offered).
%             The reference service is in this script the one with wideAreaCovR and
%             the Eb/No for the reference service is based on wideAreaCovR and wideAreaCovSpeed.
%
%             In soft handover MRC combining is assumed. Also it is assumed that 
%             each link in SHO is transmitted with equal power with one excpetion: if 
%             the CPICH channel powers are not equal the the transmit powers are scaled
%             by the CPICH channel power differencies.
%             The wanted area is chosen by mouse by pointing two corners 
%             of a rectangle. Coverage probability is calculated by counting the pixels in 
%             coverage divided by the total number of pixels.
%
%             Finally the cumulative probability of required transmit powers is plotted
%             using two different scaling. In upper figure the scaling is done down to
%             reference RAB and CPICH power of the cells is subtracted. This is done for 
%             setting the parameter CPICHToRefRabOffset.
%
%             In the lower figure required transmit powers are plotted in the original scale.
%             This is for helping the setting of pTxDLAbsMAx.
%
%Inputs:
%   the outputs of the downlink iteration
%   basestation           : the base station data structure
%   mobilestation         : the mobile station data structure
%   yPixels, xPixels      : numbers of pixels in each direction 
%   tmpBitRate            : the bitrate of the service for which the coverage is 
%                           calculated 
%   tmpSpeed              : the MS speed for which the coverage is calculated
%   tmpAbsMax             : the maximum power per link for any service and cell
%   tmpCPICHToRefRabOffset: the offset which defines the maximum power for a reference 
%                           service with respect to the CPICH Tx power
%   tmpAbsMax             : the limit which no dedicated Tx power per link can exceed.
%                           Corresponds to the parameter PtxDlAbsMax of RNC.
%   tmpCoverageTarget     : the specified coverage probability target
%   bsTxPowerLin          : numBSs times numMSs matrix of DL transmit powers of each link
%   numBSs                : number of cells      
%   commonChannelOther    : total transmit power of common channels other than CPICH
%                           of each base station   
%   linklossDL            : numBSs x yPixels x xPixels matrix of DL linklosses from each BS 
%                           to map pixels
%   bestServDL            : yPixels x xPixels matrix of indeces of the best server in DL 
%                           in each map pixel
%   msNoisePowerLin       : noise power in MS
%   wideAreaCovR          : bitrate of the reference service
%   wideAreaCovSpeed      : MS speed for the reference service
%
%
%Outputs:
%   wideAreaCovPDL        : Area coverage probability for the wanted service
%
%Authors: Kari Sipil