qpsk调制解调
............\作业报告.doc
............\程序
............\....\comb.m
............\....\compconv.m
............\....\compoversamp.m
............\....\hrollfcoef.m
............\....\qpsk.m
............\....\qpskdemod.m
............\....\qpskmod.m
............\....\Rayleigh_channel.m