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使用NMEA0183的gps服务程序原码(use of a GPS NMEA0183 service program source)

二进制频移键控的调制解调方案，经典不容错过(Binary FSK modulation and demodulation of the program, a classic not to be missed)

通过共享内存的方式进行程序间的通讯. 本源代码提供通讯两端的代码，即发信端和收信端（在同一文件内）(programme communication with share memory)

Matlab平台下仿真实现2*2, 4*4， 6*6天线Alamouti空时编码的MIMO系统，画出不同信噪比下的性能曲线对比。(2* 2, 4* 4, 6* 6 antenna Alamouti space-time coding MIMO system Matlab simulation platform, draw the comparison of different signal-to-noise ratio performance curve.)

基于BPSK的通信系统程序，上采样，平方根升余弦滤波器(Bpsk - based communication system program)

MIMO指多输入多输出，MIMO技术大致可以分为两类：发射/接收分集和空间复用。传统的多天线被用来增加分集度从而克服信道衰落，具有相同信息的信号通过不同的路径被发送出去，在接收机端可以获得数据符号多个独立衰落的复制品，从而获得更高的接收可靠性。这种技术往往要结合多天线技术，而多天线技术在移动通信中得到了广泛的研究。(MIMO refers to Multiple Input Multiple Output, MIMO technology can be broadly classified into two categories: transmit/receive diversity and spatial multiplexing. Traditional multi-antenna was used to increase the degree of diversity to overcome channel fading, the signal with the same information through different paths have been sent in the receiver-side data symbols can be multiple independent copies of the decline, which was higher reception reliability. This technology often have to combine multi-antenna technology, and multi-antenna technology in mobile communication has been widely studied.)

通过具体的信道实例对比几种信道容量，绘出对数正态衰落、瑞利衰落、Nakagami衰落下确定的容量随平均接收信噪比变化的曲线。(The capacity of several channels is compared by a specific channel example, and the curve determined by the logarithmic normal fading, Rayleigh fading and Nakagami fading with the change of the average received signal to noise ratio (SNR) is drawn.)

SPMS deal 模块，SPMS deal 模——(SPMS deal 模块)

说明：  维纳滤波 自适应滤波 随机生成模拟信号与数字信号，加入高斯白噪声之后进行滤波(Implementation of Wiener filter and adaptive filter)

说明：  可以同时模拟多个GB28181摄像头。 用于GB28181平台的压力测试(Multiple gb28181 cameras can be simulated at the same time. Pressure test for gb28181 platform)