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calculate catalan number

说明：  针对数字卫星常用的 7 种通信信号调制方式(QPSK、8PSK、16QAM、32QAM、64QAM、16APSK、32APSK)，对零中心归一化瞬时幅度谱密度最大值、四次方谱、幅度、高阶累积量四种特征参数进行了分析，提出了一种联合特征参数的信号调制识别方法．(Aiming at seven communication signal modulation modes commonly used in digital satellite (QPSK, 8PSK, 16QAM, 32QAM, 64QAM, 16APSK and 32APSK), four characteristic parameters of zero-center normalized instantaneous amplitude spectral density, quadratic spectrum, amplitude and high-order cumulant are analyzed, and a signal modulation recognition method of joint characteristic parameters is proposed. Method.)

LTE prach的信令分析代码,由协议解析出数据处理需要的信息(The signaling LTE PRACH analysis code, the protocol analysis data processing need information )

This thesis presents simulation data on array operation in wideband communication systems. It is shown that array structures with closer inter-element spacing outperform structures with much larger inter-element spacing. It is also shown that circular structures outperform linear structures. This performance dierence between the classications of arrays is due largely to the circular array s ability to handle high levels of interference. Even though a diversity combining scheme (MRC) was used in the simulator, the arrays provided interference rejection capabilities due to the closely spaced antenna elements.

说明：  ofdm papr hammerstein python

control tool of mimo transfer function and controller design with LQR problem

基于DFT码本的波束方向图生成代码，通俗易懂(DFT based beam pattern generation code, easy to understand)

This toolbox is used to develop software defined radio for GPS receiver

VC6连接Redis服务器示例，系统:win32 xp sp3，编译器:VC6，无依赖(VC6 connect Redis server example, the system: win32 xp sp3, compiler: VC6, no reliance)

WSN中节点确定性部署算法代码，覆盖率达到100％，算法思路简单，易于实现(Uncertainty in the deployment of WSN node algorithm code, the coverage reached 100, algorithm idea is simple, easy to realize)