radarbasics

Digital Audio Broadcasting System Modeling and Hardware Implementation

语音信号处理的fft算法 编程实现了FFT算法，运用编写的FFT程序对信号进行FFT计算和还原，待分析的信号是一段音乐，与Matlab的FFT函数进行了比较并设计系统页面 (FFT algorithm for speech signal processing FFT programming algorithm, the use of the preparation of the FFT program to calculate and restore the signal FFT, the signal to be analyzed is a piece of music, and the Matlab function of the FFT and the design of the system page)

说明：  Good e-book on WiMAX, published in 2007,

Jabba是一个非常好的Jabber客户端，使用的Visual C++平台编写，可以在Jabba的基础上快速开发Jabber应用程序。(Jabba is a very good Jabber client, use Visual C++ Platform preparation, you can Jabba the basis for rapid development of Jabber applications.)

MATLAB的主要函数及其注释 可方便查找用(The main function of MATLAB and its notes can be easily used to find)

数字基带信号的调制与解调的matlab程序(matlab of the)

this document present three algorithms to identify the type of modulation in digital communication.

航空航天通信技术一般采用模拟通信的频率调制和数字通信的移相键控调制方法。这有利于充分应用信道带宽和能源。频率调制是在一定程度上改变载波或副载波的频率来传输信息的调制方法。移相键控调制是利用载波或副载波的相位跳变来传输信息的调制方法。移相键控又分二相移相键控、四相移相键控和多相移相键控，其中以四相移相键控和八相移相键控调制方法的效率较高(Aerospace communications technology commonly used analog communication of frequency modulation and the digital communication phase shift keying modulation method. This is helpful for making full use of channel bandwidth and energy. Frequency modulation is changed to some extent carrier or subcarrier frequency to transmit information modulation method. Phase shift keying modulation is the use of carrier or subcarrier phase jump to transmit information modulation method. Phase shift keying and binary phase shift keying, four phase shift keying and multiple phase shift keying, of which four phase shift keying and eight phase shift keying modulation method of high efficiency )

该程序全面仿真了蜂窝小区，主要是信道分配、切换等(The program overall simulation of a honeycomb village, mainly is the channel allocation, switch, etc )

说明：  BP神经网络信道均衡，matlab的仿真实现(BP neural network channel equalization)