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程序使用了自相关性和互相关性较好的gold码作为扩频序列，直扩，扩频增益设置为31，模拟用户数为4(Program uses a self-correlation and cross-correlation of the better gold code as spreading sequence, direct expansion, spreading gain is set to 31 to simulate the number of users of 4)

matlab生成混沌信号的几个代码 以及文档资料 非常好 一次学会混沌信号(matlab to generate a chaotic signal code and documentation is very good chance the chaotic signal)

matlab O&M算法 matlab仿真程序，使用函数实现位定时算法(Matlab O&M algorithm matlab simulation program, the use of functions to achieve bit timing algorithm)

在gnuradio+usrp上实现OFDM协议，全双工的。(The OFDM agreement on the gnuradio+usrp, full-duplex.)

OFDM_cyclic_spectrum11,循环谱切片谱的一些原理性matlab代码(this is matlab code about OFDM_cyclic_spectrum)

利用DML算法和SML算法实现到达方位角的估计(Estimation of arrival azimuth using DML algorithm and SML algorithm)

仿真了高斯白噪声，并通过巴特沃夫滤波器生成高斯色噪声(The gaussian noise was simulated and the gaussian noise was generated through the butterworth filter)

开关电源反激电路48V/1.5A。电路原理图(Switching power supply flyback circuit 48V/1.5A. Circuit schematic)

（1）请推导出单径瑞利信道中的BPSK相干解调的理论误码率性能，并画出比特信噪比与误码率的关系曲线。 （2）在单径瑞利信道中，请设计一种时分的导引辅助的信道估计方法，用Simulink进行仿真，测量BPSK的误码率性能，画出比特信噪比与误码率的关系曲线，并与(1)的曲线进行对比。 ((1) derived from single-Path Rayleigh channel coherent demodulation of BPSK theoretical bit error rate performance and draw-bit signal to noise ratio and bit error rate curve. (2) in a single Path Rayleigh channel, please design a guided night-assisted channel estimation methods, using Simulink simulation, surveying BPSK BER performance, drawn-bit signal to noise ratio and bit error rate curve, and with (1) comparing the curve.)

说明：  数字通信系统的仿真，全matlab代码，实测可用(Digital communication system simulation, full matlab code, measurement available)