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加拿大人发表的关于周跳探测,实现了实时的双频周跳探测和修复(cycle-slipsfromCanada)

we created a wireless network using opnet.

雷达系统，基于matlab实现雷达信号的相参积累的简单代码(Radar system, based on MATLAB, is a simple code for coherent accumulation of radar signals.)

生成bsk信号，观察其时域及频域下的波形。(Generating bpsk signal)

认知无线电中频谱感知的方法，基于能量检测的算法和仿真(energy detection)

说明：  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：  使用MATLAB软件，实现TD-LTE系统Turbo编码器的设计。(Using MATLAB software to designe the turbo encoder of TD-LTE system .)

该工程实现对单载波系统QPSK的频偏估计算法。调相信号在接收机相干解调时需要同频同相的参考载波，而发射机和接收机之间往往存在频率偏差，为了消除这种误差，必须在软件层面实现。使用了QPSK四相调制的信号特点进行载波频偏估计，经验证，效果较好。(This project implements frequency offset estimation algorithm for single carrier system QPSK. The phase modulation signal needs the same frequency reference carrier in the coherent demodulation of the receiver, and the frequency deviation often exists between the transmitter and the receiver. In order to eliminate this error, it must be implemented on the software level. The carrier frequency offset estimation is carried out by using the signal characteristics of QPSK four phase modulation.)

瑞利衰落信道，是一种无线电信号传播环境的统计模型。这种模型假设信号通过无线信道之后，其信号幅度是随机的，即“衰落”，并且其包络服从瑞利分布。这一信道模型能够描述由电离层和对流层反射的短波信道，以及建筑物密集的城市环境。(Rayleigh fading channels, the statistical model of a radio signal propagation environment. This model assumes that after the signal through the radio channel, the signal amplitude is random, ie, the " fading" and the envelope of the Rayleigh distribution. This channel model is able to describe the HF channel reflected by the ionosphere and troposphere, as well as building a dense urban environment.)

用Matlab写的关于UDP（用户数据报协议）下的主机间的数据通讯。如需运行这个程序，只需把程序中的IP替换成你的主机IP地址即可(Written in Matlab data communication between host UDP (User Datagram Protocol). To run this program, simply replace the IP program into your host IP address can be)