modulation

低信噪比条件下的高分辨DOA估计算法,提出一种基于多级维纳滤波器(MSWF)的信号波达方向(DOA)估计算法。通过测试信号子空间的估计值与噪声子空间的正交性实 现 DOA粗估计，通过测试MSWF 分解的互相关函数实现信号 DOA 的精估计。仿真实验表明，在低信噪比条件下，该算法比已有的子空 间类算法有更好的分辨率和误差性能。(Put forward a kind of multistage Wiener filter (MSWF) based on the signal direction of arrival (DOA) estimation algorithm. By testing the orthogonality between the estimated values of the signal subspace and the noise subspace Now DOA coarse estimation, by testing the MSWF decomposition of the cross-correlation function to achieve accurate estimation of signal DOA. Simulation results show that the proposed algorithm is more efficient than the existing subspace in low SNR conditions The inter class algorithm has better resolution and error performance.)

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)

说明：  TCPIP在51单片机中的使用，一看就会，非常简单可靠实用(TCPIP )

ofdm的采用的改进pts，即m序列pts方法来降低papr(Improvement of the adoption of OFDM pts, namely m sequence pts methods to reduce the PAPR)

说明：  一个完整的ofdm仿真过程，梳状导频 ls解码 可调psk(one kinds of ofdm simulation with comb pilot and qpsk mod)

用c语言写的ldpc码的最小和算法译码程序。(The codes are about ldpc decoding,using min-sum algorithm by c++.)

说明：  单脉冲和差波束法测角的matlab代码及支持函数，生成和差波束鉴角曲线，可以直接运行(The matlab code and support function of single pulse sum difference beam angle measurement can generate sum difference beam angle discrimination curve and run directly)

calculate catalan number

3D MIMO下，比较了单用户和多用户下Taylor简化的容量(In 3D MIMO, the simplified capacity of Taylor under single-user and multi-user comparison is compared)

说明：  智能语音小车标准程序，已经测试通过了的。完全没有问题。(The standard program of intelligent voice car has passed the test. No problem at all.)