www.gusucode.com > 基于Matlab的MIMO通信系统仿真 含报告;司中威;了解移动通信 > 基于Matlab的MIMO通信系统仿真 含报告;司中威;了解移动通信关键技术,了解数字通信系统仿真流程,实现基本的信道编译码、调制解调等通信模块。(好评如潮,课设拿满) 学习并实现MIMO空时处理技术 学习性能分析的思路和方法/mimo/matlab for mimo 2x2/qam16.m
function [Ichannel, Qchannel] = qam16(b) % Done !!! % d = qam16(b) % Input: % b = bits {0, 1} to be mapped into 16-QAM symbols % % Output: % I-channel and Q-channel % Gray mapping % 0010 0110 1110 1010 % 0011 0111 1111 1011 % 0001 0101 1101 1001 % 0000 0100 1100 1000 j = sqrt(-1); outlen = length(b)/4; %d = zeros(1, outlen); Ichannel = zeros(1, outlen); Qchannel = zeros(1, outlen); %int Ichannel, Qchannel; %int %I-channel k = 1; for i = 1:4:length(b) if b(i) == 0 if b(i+1) == 0 Ichannel(k) = -3; else Ichannel(k) = -1; end else if b(i+1) == 0 Ichannel(k) = +3; else Ichannel(k) = +1; end end %% Q-channel if b(i+2) == 0 if b(i+3) == 0 Qchannel(k) = -3; else Qchannel(k) = -1; end else if b(i+3) == 0 Qchannel(k) = +3; else Qchannel(k) = +1; end end % d(k) = Ichannel(k) + j*Qchannel(k); k = k+1; end