gdop_all

Estimate tec (total electron content) by least-sqaure adjustment using GPS dual-frequency code observables. Ionosphere is approximated as the single- layer model at the height of 350km with local or global tec model. Satellite/receiver dcbs (differential code biases) are estimated as well as tec model coefficients.

多径信道对数字信号的影响。包含用 matlab 画出信道的幅频响应和相频响应等内容。(Multipath channel to the influence of the digital signal. Contains matlab draw channel amplitude frequency response and the phase frequency response, etc.)

matlab界面编程中的实现可选的子界面！ 就像VC++的MFC中的Table空间，解决你的复选问题！(The matlab interface programming realization optional sub-interface! Table space like VC++ the MFC solve your check!)

采用多相滤波结构进行仿真实验，先三倍抽取，后八倍内插(The simulation experiment is carried out using a polyphase filter structure, which is first extracted three times and interpolated eight times later)

说明：  可以对模糊的图像进行去噪处理，使得图像更加清晰(It can denoise the blurred image and make the image clearer)

OFDM中降低峰均比的方法，将传统的SLM法，改进的SLM法和限幅加改进SLM法进行比较(Compare OFDM PAPR reducing methods in the traditional SLM method, improved SLM method and limiter plus improved SLM method)

改进的fcm聚类算法，通过网格划分初始聚类区间(Improved FCM clustering algorithm)

说明：  ldpc编码的matlab实现，供大家参考(Matlab implementation of LDPC coding for your reference)

在关联成像中广泛存在的算法，涉及到DGI、GI等算法，这些算法均是线性算法，没有超分辨能力，但是抗造能力比较强，比较通用。(The widely existing algorithms in related imaging involve DGI, GI and other algorithms. These algorithms are linear algorithms without super-resolution, but they have relatively strong anti fabrication capability and are more common.)

简单的MIMO模拟 假定QPSK，ML解码（SM ZF检测器除外）。 mrc.m - 最大比例组合 stc.m - 具有1和2个接收天线的Alamouti空时分组码 bf.m - 特征波束形成 sm.m - 空间复用2x2（ML解码和次优逼迫） 简单的OFDM仿真 模拟保护带，用于信道估计的循环前缀前导码符号(Simple MIMO simulations Assumes QPSK, ML decoding (except SM ZF detector). mrc.m - maximal ratio combining stc.m - Alamouti space-time block code with 1 and 2 receive antennas bf.m - Eigen-beamforming sm.m - Spatial multiplexing 2x2 (both ML decoding and suboptimal zero forcing) Simple OFDM simulation Simulates guard band, cylic prefix Preamble symbol used for channel estimation)