pca

说明：  这是个滤波器设计程序编码，希望各位朋友看看！(滤波器设计)

说明：  4G通信技术综述，分析4G通信的优势及挑战，关键技术(Overview of 4G communications, analyzing the advantages and challenges of 4G communications, key technology)

学习并找到降噪方法，对语音信号背景噪声做处理，使得声音更清晰。(The background noise is the most common factor degrading the quality and intelligibility of speech in recordings. Spectral subtraction can lower the noise level without affecting the speech signal quality. In this paper, we have studied and implemented to reduce the background noise of the voice signal, and to make improvements to reduce the background noise of the experiment. Not only with the spectral subtraction of the noisy signal of the transformation, we improve the traditional spectral subtraction based on the introduction of the parameters, by adjusting the parameters(α、β、γ) to achieve better enhancement.)

Dont Net Siemens Toolbox

在matlab下对认知无线电频谱检测，能量检测，周期循环检测(Under the matlab for cognitive radio spectrum detection and energy detection, cycle detection)

该文件是模拟电磁波传播过程中遇到障碍物遮挡使信号与接收装置之间不能直视而产生的传输误差，对模拟电磁波传播具有很大帮助。(The file is a simulation of the transmission error caused by the obstacle occlusion in the process of electromagnetic wave propagation, which can not be seen directly between the signal and the receiving device. It is of great help to the simulation of electromagnetic wave propagation.)

以ofdm作为调制方式的发送端的信道模型(To ofdm transmitter as modulation of the channel model)

说明：  蜂窝网仿真，在高斯白噪声干扰信道下，小区复用因子，没有考虑共道干扰的情况(simulation of cellular network under AWGN condition)

TOTAL GENERALIZED VARIATION FOR IMAGE DENOISING.

Programing cable interface for NVP2010/2020