3

本程序为CCK调制的MATLAB仿真程序，对于研究通信搞调制解调的人十分有用！~(err)

3条固定路径的AWGN多径信道中的QPSK系统进行BER性能仿真，并与理想信道(没有多径)作比较。 需要的支撑子程序为qpsk_berest.m,vxcorr.m,random_binary.m.(Three fixed-path multipath AWGN channel QPSK system BER performance simulation, and with the ideal channel (no multipath) for comparison. Need the support of subprogram for qpsk_berest.m, vxcorr.m, random_binary.m.)

Cruise for Arduino with Attyni 48

认知无线电，无线通信，matlab仿真代码(cognitive radio wireless communications matlab code)

资料为matlab PLL_ADC_DDS建模资料，值得参考。。。(nformation for matlab PLL_ADC_DDS modeling data, worthy of reference.....)

提供了详细的说明，有常见的各种变分法模型，其中包含了知识讲解，例题样例，同时提供了一部分代码实现(Detailed instructions are provided. Variational models are common, including knowledge explanations, sample examples, and some code implementations.)

matlab 调外部用dll，实现混合编程(matlab )

audio jack communication

Traditional police boundaries—precincts, patrol districts, etc.—often fail to reflect the true distribution of criminal activity and thus do little to assist in the optimal allocation of police resources. This paper introduces methods for crime incident forecasting by focusing upon geographical areas of concern that transcend traditional policing boundaries.

发送装置：随机信号产生、脉冲成型（上采样可调，滚降可调）； 发送：AWGN信道（信噪比范围可调） 接收设备：QPSK调制解调 ，匹配滤波，判决 画出接收信号的眼图、星座图；计算误码率并与理论值比较。 (Transmitting device: random signal generator, pulse shaping (the sampling adjustable, adjustable roll-off) Send: AWGN channel (SNR range is adjustable) Receiving equipment: QPSK modulation and demodulation, matched filtering, judgment   BER is calculated and compared with the theoretical value draw the received signal eye diagram, constellation.)