zz

vb 和pmac控制卡的简单通讯，实现电动，正转反转停止，及下载文件(vb to pmac commucation)

qpsk的仿真以及根升余弦滤波器成形另外有误比特率的比较(qpsk simulation and shaping the root raised cosine filter)

说明：  3. 瑞利信道中的调制解调、信道估计： (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，并与理论误码率曲线进行对比。(3. Modulation demodulation and channel estimation in Rayleigh channel: (1) deduce the theoretical bit error rate performance of BPSK coherent demodulation in single-path Rayleigh channel, and draw the relationship curve between bit signal-to-noise ratio and bit error rate. (2) in single-path Rayleigh channel, please design a time-division guidance assisted channel estimation method, Simulink simulation, measure the bit error rate performance of BPSK, draw the relationship curve between bit SNR and bit error rate, and compare with the theoretical bit error rate curve.)

GMSK modulation code.

opnet simulation of random access in CDMA network

Logika 25s controllers Modbus alarm codes documentation

这个源代码是对MIMO系统的仿真，包括对MIMO信道的模拟以及不同的MIMO配置下，容量的特点。(This source code is a MIMO system simulation, including the simulation of the MIMO channel and different MIMO configuration, capacity characteristics.)

DS-CDMA链路中加入基于子空间的PASTd多用户检测方法。系统中采用m序列阔频，可以通过高斯信道或瑞利信道。可以直接运行得到不同信噪比下的误码率曲线。(DS-CDMA link added Subspace-based multiuser detector PASTd. M sequence used in the system wide-band, Gaussian channel, or by Rayleigh channel. Get different signal to noise ratio can be run directly under the BER curves.)

说明：  matlab卷积码编译程序，有详细的中文注释，希望对你有所帮助。(Matlab convolutional code compiler, the Chinese have detailed notes, and I hope to help you.)

The future satellite communication systems are re- quired to support the higher transmission data rate for providing the multimedia services by employing the e铿僣ient modulation method such as multi-level QAM.