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propagation channel中文是什么意思

  • 傳播信道

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  • Moreover , the performance of the single - cell s - cdma system employing go sequences under the multi - path propagation channel is analyzed , resulting analytical sir expressions , the numerical and simulation error results , for rayleigh and rice fading channels respectively
    此外,本文還對多徑傳輸條件下采用go序列擴頻的單小區(qū)s - cdma系統(tǒng)性能進行了理論分析,給出了瑞利、萊斯衰落信道條件下sir表達式以及誤碼性能數(shù)值計算和仿真結(jié)果。
  • As we all know , the capability of wireless communication system is constrained by radio propagation channel , especially for future wideband communication system . so it needs more signal processing techniques to withstand bad radio propagation environment , such as diversity combination , coherent detection and channel encoding and decoding etc . for mimo physical layer approaches , channel state information is a prerequisite , thus comes many channel estimation approaches and algorithms
    無線通信系統(tǒng)的性能主要受到移動無線信道的制約,特別對未來的寬帶移動通信系統(tǒng)更需要采用很多信號處理技術(shù)來對抗惡劣的無線傳播環(huán)境以提高系統(tǒng)性能,比如常見的分集合并、相關(guān)檢測和信道編解碼技術(shù)等,而采用這些技術(shù)的前提就是要知道信道的狀態(tài)信息( csi ) 。
  • Although , the high performance promised by mimo technology is highly dependent on the propagation channels . meanwhile , we need to establish mimo radio channel models and corresponding simulations to research key technologies and algorithms in mimo systems and to evaluate the system performance
    然而, mimo無線系統(tǒng)大容量的實現(xiàn)和其它性能的提高極大地依賴于mimo無線信道的特性;同時,研究基于mimo的各種關(guān)鍵技術(shù)和處理算法也需要建立mimo信道的模型,進行相應(yīng)的仿真,以便評估各種處理算法的優(yōu)劣和系統(tǒng)性能的好壞。
  • In chapter two " understanding " , it puts forward the new concept of news planning by enterprise , analyses its distinction from advertisement , propagation and public relation and defines the intension and extension of news planning by enterprises , it defines news planning by enterprise as economic , innovative , ahead of time , open , cultural , real and original ; it sets out the three objectives of news planning , namely : brand , sale and competition ; finally it discusses the five trends of news planning by enterprise : namely , professionalism of propagating subject , net of propagation channel , harmonization of planning practice , extensive scope of service and normal understanding of news planning
    在第二章“認識篇”中,提出了全新的企業(yè)新聞策劃的概念,并分析了其與廣告、宣傳、公共關(guān)系等相關(guān)概念的區(qū)別,界定了企業(yè)新聞策劃的內(nèi)涵與外延;指出企業(yè)新聞策劃具有經(jīng)濟性、創(chuàng)新性、超前性、開放性、文化性、現(xiàn)實性及原創(chuàng)性等特點;明確了企業(yè)新聞策劃具有品牌、銷售和競爭三大目標;最后探討了企業(yè)新聞策劃的五大趨勢,即傳播主體的職業(yè)化,傳播渠道的網(wǎng)絡(luò)化,策劃實務(wù)的整合化,服務(wù)范圍的廣泛化以及對新聞策劃理解的平?;鹊?。
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