Multiphase filter

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)

Selective mapping algorithm is proposed to reduce the peak-to-average power ration (PAPR) in MIMO-OFDM system. It is proved that the conjugate symbols on two antennas have the same PAPR property with orthogonal space-time block coded (STBC). By using the characteristic, the computational complexity cost and the side information (SI) is significantly reduced compared with the concurrent SLM algorithm. Simulation results demonstrate that the performance of the proposed algorithm outperforms the conventional concurrent SLM algorithm.

GPS信号模拟软件，模拟GPS设备向串口输出0183格式标准语句，配合串口虚拟工具使用，可以在普通电脑上调试(GPS signal simulation software, which simulates GPS equipment to output 0183 standard statements to serial port, can be debugged on ordinary computer with serial virtual tools.)

OFDM系统中的Schmidl、minn、park同步算法仿真包括高斯信道和多径衰落信道。(In OFDM Schmidl, Minn, park synchronization algorithm simulation including the Gauss channel and multipath fading channel)

J2ME开发精解原码 第5章内容 大家多多交流 共同提高(J2ME development of sperm solution Chapter 5 of the original code the content of many U.S. exchanges enhance common)

16QAM调制与解调的全过程，能够观察眼图、星座图、误码率等，方便研究运用16QAM调制解调的系统的性能(16QAM modulation and demodulation of the entire process, be able to observe the eye diagram, constellation diagram, error rates, facilitate the study of the use of 16QAM modulation and demodulation of the system s performance)

说明：  简单实现基于各种加权分数傅里叶变换的混合载波系统(Simple implementation of hybrid carrier system based on various weighted fractional Fourier transform)

在TOA测距的基础上，提出了一种三维无线传感器网络节点定位算法，并对其性能进行了分析，给出了算法的时间同步误差和定位误差。最后在现有仿真平台OMNET++的基础上构建三维仿真模块，对算法进行了仿真实现，给出了该算法的定位精度和覆盖率(This paper proposes one three-dimensional localization algorithm based on TOA distance measurement and analyzed the performance of the algorithm calculated time synchronization error and localization error. Finally it constructed three-dimensional simulation modules based on OMNET++ and implemented the algorithm educed the localization precision and coverage.)

说明：  C++开发104协议，支持主从站。支持多客户端连接(C++ develops 104 protocol to support master and slave stations. Support multi-client connection)

OFDM的QPSK及其调制matlab程序(OFDM-QPSK modulation matlab and its procedures)