城市公共交通IC卡技术规范

本书描述了4G LTE / 5G NR 无线接入技术。(This book describes LTE, developed in 3GPP and providing true fourth-generation (4G) broadband mobile access, as well as the new radio-access technology 3GPP is currently working on. Together, these two technologies will provide 5G wireless access.)

这是研究欧洲DVB-T标准的一套合集，主要介绍了DVB-T单频网的同步技术，以及系统设计和实现。其中对DVB-T单频网进行了详细的讲解，对研究我国的数字电视广播技术也有很好的借鉴作用。(This is the study of the European DVB-T standard a collection, mainly introduces the synchronization technology of DVB-T single frequency network, and the system design and implementation. It make a detailed explanation of DVB-T single frequency network, also have a very good reference for digital television broadcast technology research in china.)

In this paper, we present and analyze efficient frame synchronization and frequency offset compensation scheme with ternary sequences for an orthogonal frequency division multiplexing (OFDM) system in Rayleigh fading channels. Frame synchronization is an essential procedure for normal operation of the OFDM system because of sensitivity to synchronization errors. And when there are frequency offsets in OFDM frame, the loss of orthogonality occurs and the interference problem among several subcarriers is introduced. These fact leads to the requirement for joint implementation of the frame synchronization and frequency offset compensation.

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智能天线波束赋形算法研究,对天线中的波束形成算法分析的非常深入。(Smart antenna beamforming algorithm, in the antenna beam to form a very in-depth analysis of the algorithm.)

this folder contains VIs related to USRP.

面向QOS的马尔可夫选择决策算法，通过对算法模型合理化构建过程于异构环境特点的紧密结合，最大程度满足异构网络环境中用户QOS的长期效益(Facing the QOS markov selection decision algorithm, based on the rationalization process in constructing algorithm model heterogeneous environment characteristics of closely, satisfy heterogeneous network environment the user QOS long-term benefits )

说明：  ：为了论证高斯最小频移键控(GMSK)信号在时域和频域的相互关系，分析了GMSK信 号调制原理和滤波器传递函数，建立了GMSK调制和解调模型。(: In order to demonstrate Gaussian Minimum Shift Keying (GMSK) signal in time domain and frequency domain, the relationship between the analysis of GMSK signal modulation principle and the filter transfer function established model for GMSK modulation and demodulation.)

主要是基于mtlab的程序，MinkowskiMethod算法 ,matlab实现了五类灰色关联度模型的计算。( Mainly based on the mtlab procedures, MinkowskiMethod algorithm, matlab implements five gray correlation degree computing model.)

基于51单片机的CRC算法的C语言实现(文档内含源代码)(Based on 51 MCU CRC algorithm C language implementation (document containing the source code))