userseq_gen1.m

来自「运用群操作进行多用户检测」· M 代码 · 共 30 行

function [user_seq max_corr] = userseq_gen1(user_num)
N = 31;
goldseq = zeros(33,31);
for i = 1:33,
    goldseq(i,:) = goldseq_gen1(i);
    goldseqbal(i) = sum(goldseq(i,:)*2-1);
end
goldseq_index = find(goldseqbal == 1);
goldseq_length = length(goldseq_index);

% 任意取12个
Nu = user_num;
% user_seq = goldseq([goldseq_index(39:38+Nu-1) 64],:);
user_seq = goldseq([1:Nu-1 32],:);
max_c = 0;
for i = 1:Nu,
    for j = i+1:Nu,
        a = 2*user_seq(i,:)-1;
        b = 2*user_seq(j,:)-1;
        for p = 1:N,
            c = [a(1+p:N) a(1:p)];
            v(p) = c*b';
        end
        if (max(v)>max_c)
            max_c = max(v);
        end
    end
end
max_corr = max_c;