2_TDOA

说明：  利用伪随机序列作为发送信号，经过信道，产生了频偏和相位偏移，利用数字锁相环的原理实现对信号的频率估计和相位估计，实现信号的载波同步。(The frequency offset and phase offset are generated by using pseudo-random sequence as the transmitting signal through the channel. The frequency estimation and phase estimation of the signal are realized by using the principle of digital phase-locked loop, and the carrier synchronization of the signal is realized.)

说明：  本篇讲解遥控信号的ASK、FSK、PSK解调与动画设计的Matlab程序实现。 (This remote control signals on ASK, FSK, PSK demodulation and animation design of the Matlab program.)

基于matlab的QPSK通讯系统误码率、误比特率和星座图的仿真(Simulation based on Matlab QPSK communication system bit error rate, BER, and constellation)

qpsk突发调制，完美实现qpsk，使用方便，简介，完美运行(qpsk burst modulation, the perfect realization of qpsk, easy to use, Profile, perfect running)

Walsh码在CDMA中的具体说明及应用(Walsh code specific instructions and application in CDMA)

At the beginning of 2004, the standards for third generation (3G) cellular technology were embodied in 483 Technical Specifications published by the two Partnership Projects: 3GPP and 3GPP2.

利用3GPP交织器和LTE交织器完成turbo码的仿真并做比较，不同解码算法的比较(Using 3GPP Interleaver and complete LTE interleaver turbo code simulation and comparison, a comparison of different decoding algorithms)

说明：  2. 关于无线信道的多普勒谱，请回答以下问题： (1) 在某些无线信道中，多普勒频移会引起无线信道输出信号的混叠。请描述产生混叠的各种原因； (2) 无线信道中的多普勒谱有一种经典谱(classic spectrum)，请解释产生这种谱形状的机理； (3) 请用Simulink工具编写代码(S-Function方式)，产生一单径瑞利信道，其多普勒谱为经典谱，其中移动速率为120km/h。并请描述：自己用计算机产生的经典谱是正确的依据。(2. Regarding the doppler spectrum of the wireless channel, please answer the following questions: (1) in some wireless channels, doppler frequency shift will cause aliasing of the output signals of the wireless channel.Describe the various causes of aliasing; (2) there is a classic spectrum in the doppler spectrum in the wireless channel, please explain the mechanism of producing this spectrum shape; (3) please use Simulink tool to write code (s-function mode) to generate a single-path Rayleigh channel, whose doppler spectrum is the classical spectrum, in which the moving rate is 120km/h.And please describe: your own computer generated classical spectrum is the correct basis.)

MIMO下天线选择matlab仿真实现，比较简单(MIMO antenna selection under)

自己整合的，可直接下载调试使用，傻瓜式文件一体包。(Integration of their own, can be downloaded directly debugging use, fool file integrated package.)