heterodyne

full source to hilgraeve HyperTerm 5.0 that is shipped with windows

说明：  实现Massive MIMO容量分析的代码，相关文献为 Emil Bj?rnson Jakob Hoydis Luca Sanguinetti Massive MIMO has Unlimited Capacity IEEE Transactions on Wireless Communications(This is a code package is related to the follow scientific article Massive MIMO has Unlimited Capacity)

针对MIMO-OFDM系统中期望最大化(EM)信道估计算法在高信噪比(SNR)下带来的误差地板(EF)现象,且OFDM符号的数据传输效率随发射天线数的增加而明显降低,提出一种改进的高效EM信道估计算法。该算法首先引入一种准确的等效信号模型并推导出一种修正的EM算法,改善了EM算法在高SNR下的性能 在多个OFDM间利用相位正交导频序列来提高数据传输效率,同时进行联合信道估计以提高估计性能。仿真实验验证了所提算法具有更高的信道估计性能和更高的数据传输效率。(For multiple-input multiple-output with orthogonal frequency division multiplexing(MIMO-OFDM) systems,the error floor(EF) phenomenon at high signal noise rate(SNR) was induced by the expectation maximum(EM) channel estimation algorithm.In addition,the data transmission efficiency was declined obviously with the increasing number of transmit antennas.According to these problems,an improved and efficient EM channel estimation algorithm was pro-posed.Firstly,an accurate and equivalent signal model was introduc...)

MPSK信号调制方式识别仿真，可产生B，4，8PSK信号加噪声进行仿真，学习信号分析的可以参考(MPSK modulation signal recognition simulation, can generate B, 4,8 PSK signal plus noise simulation, the study of signal analysis can refer to)

关于MIMO-OFDM的信号检测方法，ML检测(Signal detection method for MIMO-OFDM, ML detection)

zigbee的一些基础知识，引脚及其相关协议等(basic zigbee )

多径条件下基于WSF的均匀圆阵幅相误差自校正(WSF-based multipath conditions of uniform circular array amplitude and phase error self-correction)

说明：  用TCP获得网路标准时间来设定您的PC时钟(Set your PC clock with TCP to get network standard time)

modbus rtu 校验vb源码，对VB学习者很有帮助(modbus rtu checksum vb source code, useful for VB learner)

实用性代码，可以在手机等移动设备上很好的使用，可操作性强。(Usefulness of the code can be very good for use on mobile phones and other mobile devices operable.)