QPSKsimulat

说明：  OFDM多径信道的仿真和模拟,有效的仿真了多径信道(simulation of OFDM through multipath channel)

Matlab仿真实现LDPC算法。BPSK调制，适用于AWGN信道(Matlab simulation implements the LDPC algorithm. BPSK modulation, suitable for the AWGN channel)

说明：  采用Jakes模型的瑞利信道仿真matlab程序(Rayleigh Channel Simulation matlab Program Using Jakes Model)

说明：  CDMA技术的原理是基于扩频技术，即将需传送的具有一定信号带宽信息数据，用一个带宽远大于信号带宽的高速伪随机码进行调制，使原数据信号的带宽被扩展，再经载波调制并发送出去。CDMA系统仿真，初学者(CDMA system simulation)

Simulation DFB Laser by Burt Lann Espe

4FSK调制解调的matlab代码。采用相干解调的方式4FSK进行解调，与大多数方案的包络检波不同。基带信号用四种电平来表示，与调制信号相区分。(Demodulation matlab code 4FSK modulation. Coherent demodulation 4FSK demodulates Unlike most programs envelope detector,. The baseband signal is represented with four level distinguish phase with the modulation signal.)

说明：  可见光通信经典的dco ofdm 和aco ofdm，加高斯白噪声信道，可以使用的。(The classic DCO OFDM and ACO OFDM in visible light communication, with Gaussian white noise channel, can be used.)

MSK和GMSK的simulink仿真，眼图，功率谱(MSK and GMSK the Simulink simulation, eye diagram, power spectrum)

说明：  传输ofdm数据，采用了简单的多径信道，实现水下通信，整体程序还可以，可以参考参考(In order to transmit OFDM data, a simple multi-path channel is used to realize underwater communication. The overall program can also be used for reference)

用matlab编写,由浅入深实现卡尔曼滤波器跟踪,滤波功能()