衰落幅度 的英文怎麼說

中文拼音 [shuāilàfúdù]
衰落幅度 英文
amplitude of fading
  • 衰 : 衰動詞（衰弱） decline; wane
  • 落 : 落名詞[方言] （北方對蓮花落的俗稱） a kind of folk song
  • 幅 : Ⅰ名詞1. （布帛、呢絨等的寬度） width of cloth 2. （泛指寬度） width; size 3. （姓氏） a surname Ⅱ量詞（用於布帛、呢絨、圖畫等）
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 衰落 : decline; be on the wane; go downhill; fading; decay; decaying; lapse; erode
  • 幅度 : range; scope; extent; [古詞] latitude; breadth; [數學] argument; [電學] amplitude
  1. As a combination of ofdm with space - time coding technique, mimo - ofdm becomes more and more important in the future wireless communication systems, the mimo - ofdm system can not only effectively enhance the transmission rate and capacity of the wireless communication system but also greatly mitigate the effections of mufti - path fading and interfere

    Mimo - ofdm技術將ofdm與空時編碼技術有機的結合在一起，能夠大幅度的提高無線通信系統的通道容量和傳輸效率，並能有效的抵抗多徑衰落、抑制干擾和噪聲。
  2. Lt is well anown that the multi ? ath effeet results in signal fading and intersymbol interference ( isd, wnich causes great difficulhes in pewces of transndssion in underwater acoushc cotnmnication. in this papef we used frequency diversity method to overcome the problem of signal fading, and used the frequency - hopping method to ebonate the isi caused by multi - path

    水聲通道多途特性引起的信號衰落和碼間干擾是影響水下通信質量的主要因素，採用頻率分集技術可以處理幅度衰落，而跳頻技術則可以簡單、有效地抗多途引起的碼間干擾。
  3. With the characteristics of large ambient noise, very narrow bandwidth, low carrier frequency, great propagation latency and time - space - frequency variant multipath effect ( mpe ), the stochastic ocean channel has demonstrated the greatest complexity and difficulty for underwater acoustic wireless communications. among them multipath effect ( mpe ) is the most difficult obstacle that results in signal fading and inter - symbol interference ( isi )

    但是噪聲高、帶寬窄、載波頻率低、傳輸時延大、多途徑效應隨時間?空間?頻率變化等通道特性都會給有效、可靠的水聲通信帶來很大的麻煩，其中多途徑效應是最主要的困擾因素，它會導致信號幅度衰落和碼間干擾。
  4. So the acoustic wave is the only practical solution in this channel. an underwater acoustic channel is characterized as a multi - path channel due to signal reflections from the surface and the bottom of the sea. because of wave motion, the signal multi - path components undergo time - varying propagation delays that result in signal fading and inter - symbol interference ( isi )

    本文從分析淺海水聲通道的傳輸特性入手，針對多途徑效應引起的幅度衰落及碼間干擾問題，提出一種適用於水聲e - mail通信的十六進制（或八進制）數字頻移鍵控（ mfsk ）傳輸系統。
  5. It has been proven that the spread spectrum technologies have good capabilities of overcoming isi in electromagnetic wireless channel. the feasibilities of their applications to underwater acoustic channel have been analyzed, the frequency hopping technology is chosen. instead of using time - frequency diversity, convolutional coding and viterbi decoding are employed to combat signal fading, consequently the bit - rate and bit - error - rate performance of the underwater acoustic voice communication system can be balanced and controlled

    由於擴頻技術在抗碼間干擾方面具有優良的特性，因此在分析了各種擴頻技術于本研究應用的可行性之後，確定了跳頻技術作為具體實現方案；在克服幅度衰落方面，選用卷積編碼和維特比譯碼方法來替代原有的分集技術以綜合調節系統的通信速率與誤碼性能，達到差錯可控的目的。
  6. In this paper, simulation of uplink and estimating channel multipath parameters in wcdma system are developed, these parameters include multipath doa ( direction of arrival ), multipath delays and multipath amplitudes

    這些參數包括多徑信號到達角（ doa ） ，多徑時延和信號衰落因子（多徑信號幅度） 。
  7. As a combination of ofdm with space - time coding technique, mimo - ofdm has recently received considerable attentions, which can not only effectively enhance the transmission rate and capacity of the wireless communication system but also effectively combat multi - path fading and interfere

    Mimo - ofdm技術將ofdm與空時編碼技術有機的結合在一起，能夠大幅度的提高無線通信系統的通道容量和傳輸速率，並能有效的抵抗多徑衰落、抑制干擾和噪聲，從而引起了通信界的廣泛關注。
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