rheesub.m

ofdmaz自适应资源分配

% Author: Zukang Shen and Ian C. Wong  
% Copyright (C) 2004   Ian C. Wong
% 
% 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.
% 
% You should have received a copy of the GNU General Public License
% along with this program; if not, write to the Free Software
% Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
% 
% You may reach the author at [e-mail].
% Or visit his website at www.ece.utexas.edu/~iwong

function [capacity,suballo] = rheesub (Ptot, ch, N, K, noise, gamma)

suballo=reshape(zeros(1,K*N),K,N);
capacity=zeros(1,K);
occupy=zeros(1,N);
ch=ch/noise;
p=Ptot/N;
used=zeros(1,N);
% gammaVector=[gamma,1];
gammaVector=gamma;
for i=1:K
    temp=0;
    maxindex=0;
    for j=1:N
        if ((occupy(j)==0)&(ch(i,j)>temp))
            temp=ch(i,j);
            maxindex=j;
        end
    end
    capacity(i)=1/N*log2(1+p*ch(i,maxindex));
    occupy(maxindex)=1;
    used(maxindex)=i;
    suballo(i,maxindex)=1;
end

capacity=capacity(:);
gammaVector=gammaVector(:);
while (sum(occupy)<N)
    
    temp=max(capacity./gammaVector);
    
    for i=1:K;
        if (capacity(i)/gammaVector(i)<temp)
            temp=capacity(i)/gammaVector(i);
            minuser=i;
        end
    end

    
    temp=0;
    maxindex=0;
    for j=1:N
        if ((occupy(j)==0)&(ch(minuser,j)>temp))
            temp=ch(minuser,j);
           maxindex=j;
       end
   end
    capacity(minuser)=capacity(minuser)+1/N*log2(1+p*ch(minuser,maxindex));
    occupy(maxindex)=1;
    used(maxindex)=minuser;
    suballo(minuser,maxindex)=1;
end