resolvethelastbit.m

来自「matlab编写的MIMO-OFDM仿真程序」· M 代码 · 共 39 行

function [bits_alloc,energy_alloc] =ResolvetheLastBit(bits_alloc,energy_alloc,index,energytable,num_subc)

max_val = 0;
for i = 1:num_subc;
    if(i~=index & bits_alloc(i) ==1)
        if bits_alloc(i)~=0
            temp= energytable(i,bits_alloc(i));
        end
        if(temp >max_val)
            max_val=temp;
            max_ind = i;
        end
    end
end

min_val = Inf;
for i =1:num_subc
    if(i~= index &bits_alloc(i) ==1)
        if bits_alloc(i)~=0
            temp=energytable(i,bits_alloc(i)+1);
        end
        if(temp<min_val)
            min_val = temp;
            min_ind = i;
        end
    end
end

if (min_val<max_val)
    bits_alloc(min_ind)= bits_alloc(min_ind)+1;
    bits_alloc(index)=bits_alloc(index)-1;
    energy_alloc(index) = energy_alloc(index)-min_val;
else
    bits_alloc(max_ind) = bits_alloc(max_ind)-1;
    bits_alloc(index) = bits_alloc(index)+1;
    energy_alloc(index) = energy_alloc(index)+max_val;
end