LFMdetection

explanation of underwater ofdm acostic model

卫星信道删除卷积码的优化译码算法，介绍打孔卷积码的应用(Satellite channel to remove the convolutional code optimization Decoding Algorithm)

BPSK调制，采用（15,11）汉明码对信号编码；然后对信号加噪，解调，译码。(BPSK modulation (15,11) Hamming code signal encoding then added noise to the signal, demodulation, decoding.)

说明：  可实现绘制星型16QAM星座图，用于调制识别分类(Able to draw star 16QAM constellation diagram)

说明：  32位数字式光纤陀螺的采集程序，通过串口(32 Digital FOG collection program, through the serial port)

说明：  IEEE高级会员,刘太君教授.数字预失真关键技术,全面详细描述数字预失真仿真和实现的各方面内容，不可多得的资料。(IEEE senior member of Professor Liu Taijun. The key to digital pre-distortion technology, comprehensive and detailed description of various aspects of digital pre-distortion content of rare information.)

电话集团交换机的一些组成部分和工作原理,了解交换机的基本常识()

实现完整的4CPM(h=1/2)调制解调程序，包括消息序列生成，串并转换，升抽样成形滤波，数字上变频，多项式非线性效应，AWGN信道，到接收端数字下变频，降采样，匹配滤波，接收端基带信号星座图。(Message sequence generation, serial-parallel conversion, up sampling shaping filter, digital upconversion, polynomial nonlinear effects, AWGN channel, to the receiver digital down-conversion, down-sampling, the matched filter, the receiving end the baseband signal constellation.)

At the beginning of 2004, the standards for third generation (3G) cellular technology were embodied in 483 Technical Specifications published by the two Partnership Projects: 3GPP and 3GPP2.

航空航天通信技术一般采用模拟通信的频率调制和数字通信的移相键控调制方法。这有利于充分应用信道带宽和能源。频率调制是在一定程度上改变载波或副载波的频率来传输信息的调制方法。移相键控调制是利用载波或副载波的相位跳变来传输信息的调制方法。移相键控又分二相移相键控、四相移相键控和多相移相键控，其中以四相移相键控和八相移相键控调制方法的效率较高(Aerospace communications technology commonly used analog communication of frequency modulation and the digital communication phase shift keying modulation method. This is helpful for making full use of channel bandwidth and energy. Frequency modulation is changed to some extent carrier or subcarrier frequency to transmit information modulation method. Phase shift keying modulation is the use of carrier or subcarrier phase jump to transmit information modulation method. Phase shift keying and binary phase shift keying, four phase shift keying and multiple phase shift keying, of which four phase shift keying and eight phase shift keying modulation method of high efficiency )