power1strt.m

无线仿真Matlab代码

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%   ***************************************************************************
%
%   UMTS-HSDPA channel generator 
%
%   [P_1stRT] = Power1stRT(numTTI,P_out,HARQcycle)
%   Generate the accumulated power after the 1st ReTransmission
%   i.e. after two transmissions
%
%   Note that the last 2*HARQcycle elements are not written to the tracefile.
%
%
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function [P_1stRT] = Power1stRT(numTTI,P_out,HARQcycle)

% Generate the power shifted in time.
% This models the delay caused by the HARQ process 

P_out_shft=[P_out(HARQcycle+1:numTTI);zeros(HARQcycle,1)];              
% P_out_shft=[P_out(without start) 0 0 0 0 0 0] (length: numTTI)

% Maximal Ratio Combining is used at the receiver. The following is the 
% result when the original transmission and its HARQ ReTransmission power 
% (P_out power, HARQcycle TTI units later) are combined:

% This formula has been changed on June 3, 2004
P_1stRT=10*log10(10.^(P_out/10)+10.^(P_out_shft/10));     

% Note that the last 2*HARQcycle elements are not written to the tracefile.