ofdm_tr

相控阵天线综合，程序可以根据输入的阵列天线的参数，可以计算出所需天线的各单元激励信号。(Phased array antenna synthesis )

说明：  通过matlab实现车联网下的资源分配，包括用户、路边单元和基站，相关毕设可以使用(Matlab is used to realize the resource allocation under the vehicle network, including users, roadside units and base stations, which can be used in relevant settings.)

This program simulates the bit-error-rate (BER) performance of OSTBC with L=4 antennas over the frequency flat Rayleigh block fading channel The code is developed for real orthogonal design, code rate 1/2 modulation- 16 QAM with gray coding resulting in 2 bits/sec/Hz.

说明：  generate prbs pattern

说明：  7. 单径瑞利信道中的两发一收STBC： (1) 分析误码率的理论性能，画出比特信噪比与误码率的关系曲线。 (2) 请设计一种具体的导引辅助的信道估计方法，用Simulink进行仿真，测量BPSK调制时的误码率性能。画出比特信噪比与信道估计均方误差的关系曲线，画出比特信噪比与误码率的关系曲线。(7. Two outgoing and one outgoing STBC in single-path Rayleigh channel: (1) analyze the theoretical performance of bit error rate and draw the curve of the relationship between bit SNR and bit error rate. (2) please design a specific navigation-assisted channel estimation method, Simulink simulation, measurement of BPSK modulation error rate performance.The relation curve between the bit signal-noise ratio and the mean square error of channel estimation is drawn, and the relation curve between the bit signal-noise ratio and the bit error rate is drawn.)

matlab仿真LDPC码，对采样点数进行PPM编码，此代码加了保护时隙(The LDPC code is simulated by matlab, and the sampling points are encoded by PPM, which adds protection time slot.)

说明：  用于快时变信道的信道估计算法，基于BEM实现(The channel estimation algorithm for fast time-varying channel is implemented based on BEM)

mqtt-python收发，里面有几个例子，对于topic的分类，mqtt的连接，收发等！(Mqtt transceiver in python!)

encoding binary data using non return to zero

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