4803082

用winsock实现两机通讯的一个小软件 特别简单 不再具体介绍(Winsock implementation to use two planes, a small communications software in particular is no longer easy introduction of specific)

说明：  通信天线建模与MATLAB仿真分析书中10-4题目代码(Lossy Extractio Communication Antenna Modeling and MATLAB Simulation Analysis Book 10-4 Topic Code)

在信号发送后，接收方需要实现位同步才能正确解码(after signal is sent, receiver need bit syn to decode correctly)

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

DOA信源数估计，采用MDL算法，可以有效估计信源数目。(DOA source number estimation using MDL algorithm)

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。并请回答：证明自己用计算机产生的经典谱是正确的可能方法。 (On the wireless channel of the Doppler spectrum, please answer the following questions: (1) In some radio channels, the Doppler frequency shift will cause the output signal of the wireless channel aliasing. Please describe the aliasing produced a variety of reasons (2) wireless channel in the Doppler spectrum has a classical spectrum (classic spectrum), please explain the mechanism of produce such spectral shape (3), please use the Simulink tool to write code ( S-Function mode), resulting in a single-path Rayleigh channel, the Doppler spectrum for the classical spectrum, including mobile rate of 120km/h. And requested the answer: that they used computer-generated classical spectrum is the right possible way.)

点亮led流水灯，通过调用锁相环，可以更改对应的时钟。(Lighting the LED pipelining lamp, the corresponding clock can be changed by calling the phase-locked loop.)

说明：  3G方面的论文，TD-CDMA WCDMA(Papers on 3G, TD-CDMA WCDMA)

Information fur the Eltergeldl

PAPR of OFDM in Simulation