现有码本方案 ............\QPSK.m ............\QPSKJT.m ............\layer.m ............\main1.m ............\matlab.mat ............\precode_3DMIMO - 副本.m ............\precode_3DMIMO.m ............\precodebook_2.mat ............\precodebook_4.mat ............\precodebook_6.mat ............\precodebook_7.mat