chang_human_voice_Matlab-master

基函数扩展模型相关matlab代码，包含信道估计及其均衡 。(The basis function extends the model related matlab code, including channel estimation and its equalization.)

ADMM算法 切普信号的参数估计问题 包括个数估计和频率估计(The parameter estimation of Chep signal based on ADMM algorithm includes number estimation and frequency estimation.)

一种Ipod Shuffle Cable检测程序(One kind of Ipod Shuffle Cable testing procedures)

说明：  6. 在三条径的瑞利信道中，对于OFDM： (1) 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。画出比特信噪比与信道估计均方误差的关系曲线和比特信噪比与误码率的关系曲线。 (2) 设频率已同步，请设计OFDM一种具体的采用循环前缀进行时间同步方法，用Simulink进行仿真，画出比特信噪比与捕获概率的关系曲线。 (3) 设时间已同步，请设计OFDM一种具体的采用循环前缀进行频率同步方法，用Simulink进行仿真，画出比特信噪比与频率同步误差的关系曲线。(6. In the three-path Rayleigh channel, for OFDM: (1) please design a specific navigation-assisted channel estimation method and use Simulink for simulation.The relation curves of bit signal-noise ratio and channel estimation mean square error and the relation curves of bit signal-noise ratio and bit error rate are drawn. (2) if the frequency has been synchronized, please design a specific method of time synchronization using cyclic prefix in OFDM. Simulink is used for simulation to draw the relationship curve between bit-snr and acquisition probability. (3) if time has been synchronized, please design a specific method of frequency synchronization using cyclic prefix in OFDM. Simulink is used for simulation to draw the relationship curve between bit signal-to-noise ratio and frequency synchronization error.)

用于调制识别的代码，通过提取特征参数，实现bpsk，qpsk等调制方式的识别(For modulation recognition code, through the extraction of characteristic parameters, implementation bpsk, qpsk forms of identification, such as modulation)

IEEE802.15.4的opnet仿真模型源代码，主要解决无线传感器网络MAC层的接入问题协议。(The IEEE802.15.4 opnet simulation model of the source code, mainly on the MAC protocol.)

水下扩频系统研究，本系统采用直接扩频序列方式，在有多径水声信道和无多径的水声信道进行研究比较(Underwater spread spectrum system, the system uses direct sequence spread-spectrum approach, in a number of Acoustic Channel Drive and non-multi-path acoustic channel for the study of comparative)

一个DELPHI使用迅雷SDK下载文件的小例子.(A small example of using DELPHI to download files with the Thunder SDK.)

基于模拟退火算法的光学模式转换，为模分复用一种高效转换算法。(Based on the optical mode conversion of simulated annealing algorithm, a high efficiency conversion algorithm is used for modular division multiplexing.)

说明：  文件提供了通信中自适应波束形成的matlab程序，根据到达的来波方向，自适应的调节形成波束的主瓣方向，程序给出了自适应的过程和最后的波束图。(document provides communications adaptive beamforming of Matlab procedures, according to the arrival of wave direction, the regulation of adaptive beam forming the main valve direction, the procedure is the process of adaptive beamforming and the final map.)