ch2

ＭATLAB代码,利用谱减法实现语音信号增强.经过测试,效果不错.(MATLAB code, the use of spectral subtraction to enhance the realization of the speech signal. After testing, good results.)

说明：  fsk程序matlab实现fsk(fsk procedures matlab achieve fsk)

一种新的符号定时和载波频率同步算法,该算法将OFDM符号分成几部分。它使用相关性和积累在几个OFDM 符号获得估计函数。当部分的长度小于ISI自由地区,该算法可以识别它。然后估计的最优符号定时和载波频率偏移可以获得。计算机仿真结果表明,该算法不仅可以跟踪时变信道变化但也有较小的MSE比ML估计算法。(A new symbol timing and carrier frequency synchronization algorithm is presented and the algorithm divides the OFDM symbol into several parts. It uses correlation and accumulation in several OFDM symbols to acquire estimation function. When the length of part is smaller than that of ISI free region , the algorithm can distinguish it. Then the estimation of optimal symbol timing and carrier frequency offset can be acquired .The computer simulation results show that the proposed algorithm not only can track time varying channel change but also has smaller MSE than that of ML estimation algorithm.)

多目标遗传算法解决tsp问题是一个 很好的东西~~！(it s good for you and good good study day day up!!)

this program is a part of my midterm project to oder sparse data as to reduce fill in

计算MSE和PSNR的小程序，自己写的，比较简单实用(MSE and PSNR calculation of small programs, to write their own, relatively simple and practical)

PAM pulse amplitude modulation , code matlab

较为详细地介绍了单同步坐标系软件锁相环，采用了单一的同步坐标系锁相控制结构，一般适用于电网电压平衡时的相位，频率及幅值的检测，以及用于多种控制结构中（下垂控制，PQ控制，双闭环控制）。(A more detailed description of the principle of a single coordinate system PLL synchronization and setting PI controller parameters. SPLL with a single synchronous coordinate system lock control structure, generally applicable to the detection phase, frequency and amplitude of the grid voltage at equilibrium, as well as for a variety of control structures (droop control, PQ control, dual loop control).)

bpsk调制信号通过rayleigh信道的误码率测量(ber of bpsk over rayleigh channel)

基本的调制解调程序集(包括BPSK,QPSK,QAM,GMSK等)(Modem basic assembly (including BPSK, QPSK, QAM, GMSK, etc.))