bingxingacquisition

说明：  此方法采用经典的PCA对人脸图像进行特征提取，用libsvm库函数的SVM分类器对图像分类。(This method uses the classical PCA on the face image feature extraction, with the libsvm library function of SVM classifier for image classification.)

该文档为一个实现ofdm子载波调制和解调的代码，利用QPSK和16QAM两种方式实现，并附有运行结果。(This document is an implementation of ofdm subcarrier modulation and demodulation of the code, the use of QPSK and 16QAM two ways, along with operating results.)

一个人工免疫的多目标程序，可以绘制相应的pareto前沿(A multi-objective program of artificial immune system can draw corresponding Pareto frontiers)

说明：  本源码实现遗传算法，用于RA准则下的多用户OFDM自适应资源分配(The source code implements genetic algorithm for multi-user OFDM adaptive resource allocation under RA criterion)

仿真对数正态阴影衰落和仿真了一个BPSK通信系统，并与AWGN信道下的理论误码率结果进行了比较(Log-normal Shadowing PL model;Simulate a BPSK communication system, comparing simulated with theoretical BER results under AWGN channel)

2x2MIMO的误码率性能仿真，比较了ML,ZF,MMSE,ZF-SIC,MMSE-SIC在4QAM下的性能曲线(The BER performance of 2x2MIMO is simulated, and the performance curves of ML, ZF, MMSE, ZF-SIC, and MMSE-SIC under 4QAM are compared)

Cycle Slip Detection, A new method for correcting carrier phase cycle slips in single-frequency GPS signal is presented. Peking University

双广义二阶积分锁相系统，提取正序锁相，效果好(Double generalized second-order integral phase-locked system can extract positive sequence phase-locked system, and the effect is good.)

利用差分参考站和用户相对于导航卫星位置不同,引起了电波穿越电离层处的垂直TEC和角度不同是产生这种残差的主要原因,提出了一种改进的伪距差分算法并给出了定位算法。(Using differential reference station and the user with respect to the different navigation satellite position, causing the radio wave through the ionosphere at vertical TEC and angle of different residuals main reason proposed an improved pseudorange differential algorithm and gives positioning algorithm.)

说明：  基于结构相似性SSIM的图像质量评价方法是通过两幅图像的亮度、对比度以及结构相似度的对比来实现评价效果的。(The method of image quality evaluation based on SSIM is to achieve the evaluation effect by comparing the brightness, contrast and structure similarity of two images.)