美 英 un.扩展频谱调制 网络扩频调制 英汉 网络释义 un. 1. 扩展频谱调制
space modulation technique 空间调制技术 相似单词 spread spectrum 扩展频谱 spread v.[T] 1.伸开,展开,张开,铺开 2.(使)传播,散布,(使)蔓延 3.散播,散布;通知 4.涂,敷,抹 5.将(某事)分散于一段时间内,分期做(某事) 6.分配,分摊 v.[I spectrum n. 1.光谱 2.声谱;波谱;频谱 3.范围,系列 ...
spread spectrum modulation专业释义 <电信> 扩展频谱调制;扩频调制大家的讨论 摄影相关词汇(中英对照) 术语表: abaxial 【光】离中心光轴 ABBE number 雅比数值,即相对色散倒数 aberration change 析光差变化﹝因设计及应用光圈产生之光差变化﹞ aberrations 【光】析光差 abrasion marks ﹝底片﹞花痕 abrasive reducer...
of a bit length by using a serial/parallel control means and a redundancy coding means so as to process a transmission data of plural bits in parallel and converting the data into a PN series signal whose phase is shifted by one chip or over so as to apply spread spectrum modulation. CON...
Chapter7 SpreadSpectrumModulation 7.1Introduction Inthetechniqueofspreadspectrum,thefrequencyspectrumofadata-signal(shaded inFig.7.1)isspread(non-shaded)usingacodeuncorrelatedwiththatsignal.Asa resultthebandwidthoccupancyismuchhigherthanrequired[4]. Thecodesusedforspreadinghavelowcross-correlationvaluesandareunique ...
Unit7SpreadSpectrumModulation 7.1Text ••7.1.1SpreadSpectrumSignalsforDigitalCommunicationSpreadspectrumsignalsusedforthetransmissionofdigitalinformationaredistinguishedbythecharacteristicthattheirbandwidthismuchgreaterthantheinformationrateinbits/s.Thatis,thebandwidthexpansionfactorforaspreadspectrumsignalismuchgreater...
Chapter 7 Spread-Spectrum Modulation
1) spread spectrum modulation 扩谱调制 2) OC-TDMSCSSM 正交码时分多子信道扩谱调制 1. Based on the M-ary spread spectrum (M-ary-SS), direct sequence spread spectrum (DS-SS), and orthogonal frequency division multiplex (OFDM), a novel anti-jamming scheme, named orthogonal code time division...
A spread spectrum modulation system uses an input signal and a spreading signal for modulating the input signal. The spreading signal includes a plurality of component signals spaced apart substantially equally in frequency and with substantially equal amplitudes. Each component signal is phase encoded ...
Implementation of a General Digital IF Quadrature Spread Spectrum Modulator A digital IF modulator for wideband spread spectrum communication system is proposed, which can generate a variety of IF modulation signals based on techno... Q Hong - 《Telecommunication Engineering》 被引量: 3发表: 2003年...