就是qpsk用matlab实现调制解调以及扩频接扩-Is the QPSK modulation and demodulation using matlab to achieve, as well as expanding access spread spectrum

matlab，QPSK,通信系统，调制，解调，信号波形，频谱-matlab, QPSK, the communication system, modulation, demodulation, the signal waveform, the spectrum

以2^10个二进制PRBS作为消息码，载波频率为2.4GHz，画出QPSK调制波形的频谱图和 星座图，其中码元速率为5MBaud/s.源码可直接使用。-With PRBS 2 ^ 10 binary code as a message carrier frequency of 2.4GHz, spectrum QPSK modulation waveform drawing and constellation in which the symbol rate is 5MBaud/s. S