spectrumn. 1.光谱 2.声谱;波谱;频谱 3.范围,系列 communicationn. 1.传递;传播 2.通讯;交流;交往;联系 3.信息;消息;口信;书信 4.交通工具;通信工具;通路 5.传染 6.[communications]传播技术;传播学 7.[com spread eagleismn. 夸张之爱国主义
This white paper discusses the concept and techniques of spread spectrum communications, initially developed for military use to enhance secure communications. Spread spectrum systems spread a signal over a wider frequency band than the original message while transmitting at the same signal power, makin...
Spread Spectrum was developed as a way to secure military communications by spreading the signal over a large frequency band. Learn more at ni.com.
Spread Spectrum Communications and CDMA说明书 Spread Spectrum Communications and CDMA Dr. Kwang-Cheng Chen, Professor Graduate Institute of Communications Engineering College of Electrical Engineering National Taiwan University FAX:02-23683824E-Mail:***.ntu.edu.tw NTU EE Mobile Communications KC Chen, NT...
spread spectrum (redirected fromSpread spectrum communication) Encyclopedia n. A set of radio transmission techniques that vary the timing and frequency of the signal, thereby increasing the transmission's bandwidth, reducing noise and interference while making the signal harder to detect or intercept. ...
频谱扩展通信装置和频谱扩展通信方法 Spread spectrum communication device and spread spectrum communication method频谱扩展通信装置在压缩模式时用交错器进行跨越多个帧的比特单位的交错,用帧化/扩展器降低扩展率,按规定的压缩模式帧时限输出压缩模式帧,用射频发送器增加压缩模式时的平均发送功率. Spread spectrum ...
Part1 INTRODUCTIONTO SPREAD-SPECTRUM COMMUNICATION Source:SPREADSPECTRUMCOMMUNICATIONSHANDBOOK DownloadedfromDigitalEngineeringLibrary@McGraw-Hill(.digitalengineeringlibrary) Copyright©2004TheMcGraw-HillCompanies.Allrightsreserved. AnyuseissubjecttotheTermsofUseasgivenatthewebsite. INTRODUCTIONTOSPREAD-SPECTRUM...
Trellis-Coded Direct-Sequence Spread-Spectrum Communications This paper considers the application of trellis coding techniques to direct-sequence spread-spectrum multiple-access (DS/SSMA) communication. The unique fe... BD Woerner,WE Stark - 《IEEE Trans Commun》 被引量: 89发表: 1995年 A comparison...
PART 1: Introduction to spread-spectrum communications. A spread-spectrum overview -- The historical origins of spread-spectrum communications -- Basic concepts and system models -- General analysis of anti-jam communication systems -- Pseudonoise generators -- -- ··· (更多) 我来说两句 短评...
SPREAD-SPECTRUM COMMUNICATION SYSTEMS By DONTORRIERI Springer Contents Preface 1ChannelCodes 1.1BlockCodes xi ErrorProbabilitiesforHard-DecisionDecoding 1 1 6 ErrorProbabilitiesforSoft-DecisionDecoding CodeMetricsforOrthogonalSignals MetricsandErrorProbabilitiesforMFSKSymbols ChernoffBound 1.2ConvolutionalCodesandTrellis...