针对DS-CDMA系统的QPSK调制方式的MATLAB仿真。-The simulation of QPSK modulation for DS-CDMA system based on MATLAB .

简化的DS-CDMA通信系统仿真，数据流和时间流均可.码元速率256ksps，调制方式QPSK，扩频码为m序列或GOLD序列，信道为加性高斯信道和瑞利衰落信道两种，其他参数自己设定。-Simplified DS-CDMA communication system simulation, data flow and the flow of time can be. Symbol rate 256ksps, modulation QPSK, m-sequence spread-spectrum co