CDMASmsMessageEnDecoder

说明：  这是一个基于OPtisystem下的对于16QAM信号的仿真，可用于通信工程作业的一般仿真系统。(This is a simulation system of 16QAM signal based on OPtisystem, which can be used in general simulation system of communication engineering operation)

接受分集中采用选择式合并的函数，输出误码率和信噪比曲线(Acceptance of centralized using selective merge function, the output is bit error rate and SNR curve)

说明：  无线衰落信道下的通信仿真，可以更换几种常见的衰落模型，如莱斯衰落，瑞利衰落等(Several common fading models, such as rice fading and Rayleigh fading, can be replaced in the communication simulation of wireless fading channel.)

Effective methods of performing diversity selection in wireless systems has been demonstrated to significantly reduce bit error rate.

。研究了瑞利衰落信道下两跳放大前传协作中继系统的最优化功率分配问题。推导了高信噪比条件下的协作中继系统的中断概率的理论公式. 协作中继 放大前传 最优化功率分配 误符号率 中断概率(Optimal power allocation for two hops amplify- and- forward cooperative relaying communication systems in Rayleigh fading channel was studied. cooperative relaying amplify-and-forward optimal power allocation symbol error rate outage probability)

matlab中离散信号小数点时延的实现算法,可以精确实现一段序列的延时(numerical time-delay)

基于matlab的QPSK调制与解调程序(QPSK modulation and demodulation)

说明：  数字信号处理，设计数字滤波器，利用MATLAB语言仿真实现(Digital Signal Processing, Design of Digital Filter and Realization by MATLAB Simulation)

一种基于信号二阶四阶矩的信噪比估计方法，该文件中包含该方法的文章以及matlab程序。(This estimation method is based on the signal second-order signal-to-noise ratio of the fourth moment. The file contains a paper and a code.)

说明：  基于MATLAB的OFDM信道估计算法，使用了PN序列作为导频，两种导频处信道估计处理方法，中间特别加入了相位估计处理(MATLAB-based channel estimation algorithm for OFDM using PN sequence as a pilot and two pilot channel estimation Department treatment methods, particularly the middle to join the treatment phase estimation)