MU-OFDM_release.rar_OFDM CDMA_OFDM CDMA Matlab_mu ofdm_power a

% Copyright (c) 2003-2004 The University of Texas % All Rights Reserved. % % This program is free software; you can redistribute it and/or modify % it under the terms of the GNU General Public License as published by % the Free Software Foundation; either version 2 of the License, or % (at your option) any later version. % % This program is distributed in the hope that it will be useful, % but WITHOUT ANY WARRANTY; without even the implied warranty of % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the % GNU General Public License for more details. % % The GNU Public License is available in the file LICENSE, or you % can write to the Free Software Foundation, Inc., 59 Temple Place - % Suite 330, Boston, MA 02111-1307, USA, or you can find it on the % World Wide Web at http://www.fsf.org. % % Programmers: Zukang Shen % % The authors are with the Department of Electrical and Computer % Engineering, The University of Texas at Austin, Austin, TX. % They can be reached at shen@ece.utexas.edu. time1=clock worstpower=1.1565; N=64; B=1000000; N0=worstpower*1e-8; Ptotal=1; noise=B*N0/N; epsilong=1e-3; channelnum=5; samplenum=1; tdmaX=ones(1,N); tdmap=Ptotal/N*ones(1,N); pathdiffstep=10; %for usernum=8 usernum=8; gammaSetNum=8; pathdiff=[pathdiffstep 1 1 1 1 1 1 1]; gammaSet=ones(gammaSetNum,usernum); for i=1:gammaSetNum gammaSet(i,1)=2^(i-1); end %for usernum=16 % usernum=16; % gammaSetNum=5; % pathdiff=[ones(1,4)*pathdiffstep ones(1,12)]; % gammaSet=ones(gammaSetNum,usernum); % for i=1:gammaSetNum % gammaSet(i,1:4)=2^(i-1)*ones(1,4); % end outage=zeros(1,gammaSetNum); mycapaAccumulate=zeros(gammaSetNum,usernum); MaxCapaAccumulate=zeros(gammaSetNum,usernum); tdmaCapaAccumulate=zeros(gammaSetNum,usernum); %for different gamma sets for ii=1:gammaSetNum totalsumtdma=0; totalmycapa=0; totalLeeCapa=0; totalLargerstUser=0; totalSmallestUser=0; gamma=gammaSet(ii,:); %for different channel for chan=1:channelnum ii chan [env,I,Q]=chtry(usernum,samplenum,30); %for diff samples for diffsamp=1:samplenum for i=1:usernum user=I(i,:,diffsamp)+sqrt(-1)*Q(i,:,diffsamp); ch(i,:)=abs(fft(user,N)).^2*10^(pathdiff(i)/10); end [rheecapa,rheesuballo]=rheesub(Ptotal, ch, N, usernum, noise, gamma); [myp, outagecurrent]=shenpowerallo(ch,rheesuballo,N,usernum,Ptotal,noise,gamma); outage(ii)=outage(ii)+outagecurrent; for i=1:usernum mycapa(i)= waterfilling(myp(i),rheesuballo(i,:).*ch(i,:)/noise)/N; mycapaAllData(ii,chan,i)=mycapa(i); end mycapaAccumulate(ii,:)=mycapaAccumulate(ii,:)+mycapa; totalLargerstUser=totalLargerstUser+waterfilling(Ptotal,ch(1,:)/noise)/N; totalSmallestUser=totalSmallestUser+waterfilling(Ptotal,ch(usernum,:)/noise)/N; [maxChValue, maxChUser]=max(ch); maxCapasubChannelAllo=zeros(usernum,N); MaxCapaPowerAllo=zeros(usernum,N); MaxCapaPoewrAlloVec=waterfillingPowerAllo(Ptotal,maxChValue./noise); for subChindex=1:N maxCapasubChannelAllo(maxChUser(subChindex),subChindex)=1; MaxCapaPowerAllo(maxChUser(subChindex),subChindex)=MaxCapaPoewrAlloVec(subChindex); end for i=1:usernum maxCapaUser(i)=sum(log2(1+MaxCapaPowerAllo(i,:).*ch(i,:)/noise))/N; maxCapaAllData(ii,chan,i)=maxCapaUser(i); end MaxCapaAccumulate(ii,:)=MaxCapaAccumulate(ii,:)+maxCapaUser; totalLeeCapa=totalLeeCapa+waterfilling(Ptotal,max(ch)/noise)/N; for i=1:usernum tdma(i)=1/usernum*tdma_cap_cal(tdmaX,tdmap,N0,N,usernum,ch(i,:),B); tdmaCapaAllData(ii,chan,i)=tdma(i); end tdmaCapaAccumulate(ii,:)=tdmaCapaAccumulate(ii,:)+tdma; totalsumtdma=totalsumtdma+sum(tdma); totalmycapa=totalmycapa+sum(mycapa); %end diff sample end %end diff channel end totalLargestUserVector(ii)=totalLargerstUser/(channelnum*samplenum); totalSmallestUserVector(ii)=totalSmallestUser/(channelnum*samplenum); totalLeeCapavector(ii)= totalLeeCapa/(channelnum*samplenum); sumtdmavector(ii)=totalsumtdma/(channelnum*samplenum); summycapavector(ii)=totalmycapa/(channelnum*samplenum); outage(ii)=outage(ii)/(channelnum*samplenum); end time2=clock time2-time1 diffgamma=[0:gammaSetNum-1]; figure plot(diffgamma,totalLeeCapavector(1:gammaSetNum),'k') hold on plot(diffgamma,totalLargestUserVector(1:gammaSetNum),'y') plot(diffgamma,summycapavector(1:gammaSetNum), 'g+-.'); plot(diffgamma,sumtdmavector(1:gammaSetNum),'b*:') plot(diffgamma,totalSmallestUserVector(1:gammaSetNum),'c') grid on for i=1:gammaSetNum figure barData=[gammaSet(i,:)/sum(gammaSet(i,:));mycapaAccumulate(i,:)/sum(mycapaAccumulate(i,:)); ... MaxCapaAccumulate(i,:)/sum(MaxCapaAccumulate(i,:));... tdmaCapaAccumulate(i,:)/sum(tdmaCapaAccumulate(i,:))]'; bar(barData) end