DWT_OFDM

又一个利用网上寻呼提供商的web页面来发送网上寻呼的程序，可以支持很多提供商。(Another program which uses web pages of internet call provider to send internet calling , and supports many providers)

说明：  对语音编码技术的特点进行了分析与研究, 对波形编码,声码器和混合编码三种主要 的语音编码进行了比较, 并介绍了GSM 和CD(This paper analyzes and studies the characteristics of speech coding technology, compares the three main speech codes: waveform coding, vocoder and hybrid coding, and introduces GSM and CD.)

对语音信号进行加噪，求它的功率谱，降噪处理(Adding noise to speech signal and reducing noise)

TCH全速率，实现把源码发送并利用纠错和交织保护来保护源码(TCH full rate, realize the source code to send and the use of error correction and interwoven protection to protect the source code)

Driving MOSFET in High-Current, Switch Mode Regulators

说明：  在matlab环境下,仿真基于循环平稳特征检测的频谱感知,(Spectral sensing based on cyclic stationary feature detection)

使用矩形信号16qam通信系统蒙特卡洛仿真 (16qam communication system Monte Carlo simulation)

简单地绘制BOC（1, 1）调制信号的功率谱密度及其自相关函数曲线，仅供参考。(Simple drawing BOC (1, 1) density and autocorrelation function curve of power spectrum of the signal modulation, for reference only.)

CDMA系统中几种功率分配的算法。功率控制提高信道容量(CDMA system, several power allocation algorithms. Power control to improve channel capacity)

不同模态OAM的相位图，电场场强图，及用箭头表示相位变化(Phase diagrams, electric field intensity maps of different modes of OAM, and phase changes with arrows.)