Gram_S

Audio Feature Extraction routine. this routine extracts the attack time of an audio source, by extracting the timing (sample) of the highest peak. The archive inclues a routine to extract the fft and display it. Requires Voicebox for matlab.

2D对流方程求解程序，基于Matlib编程(code for solving 2D covection equations)

认知无线电功率控制方面一些重要参考文献，对研究功率控制方面的初学者很有帮助(Cognitive radio power control some important references，the study of power control for beginners is helpful)

基于matlab的DSP调试方法，不错，很有用(Matlab)

说明：  曲波软阈值处理，对已有算法的改良计算，详见程序内部的英文说明 。 (SoftThresh.m- Curvelet soft-thresholding.no more .thx.enjoy.)

this program to compute the shoot function

基带传输： 欲传送的01比特流 + 码型变换（HDB3码） + 基带成型网络（采用升余弦滚降系统）+ 信道 + 码型反变换 + 01比特流。 (Baseband transmission: To send the 01 bit stream+ code type transformation (HDB3 code)+ base-band forming network (with raised cosine roll-off system)++ code based channel inverse transform+ 01 bit stream.)

调制信号识别，利用设计的算法识别出调制信号。(Modulated signal identification, the use of algorithms to identify the design modulated signal.)

This work describes a framework for image hiding that exploits spatial domain color properties of natural images combined with spectral properties of the Fourier magnitude and phase of these images

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.)