convolutional 中文意思是什麼

convolutional 解釋
迴旋的
  1. The thesis mainly focuses on the encoding and decoding to the systemic convolutional code with programming language, which is prescribed in the intelsat iess 309 standard

    本文主要針對intelsatiess309協議標準中所採用的系統卷積碼，模擬並編程實現其編碼和譯碼。
  2. The mainly work is as follows : 1. aiming at the systemic convolutional code prescribed in the intelsat iess 309 standard we bring forward a kind of actual method and implement the encoder with programming language

    本文所做的主要工作如下: 1 、針對iess309協議中所規定的系統卷積碼，研究了一種實際的編碼方法，並編程實現其編碼。
  3. Therefore, during system design, cascade coding combining reed - solomon codes and convolutional codes is utilized ; in addition, time - direction and frequency - direction interleaves are added to alleviate channel fading

    因此在進行系統設計時，採用了rs碼與卷積碼的級聯編碼方案，並同時加入時間交織和頻率交織來對抗通道衰落。
  4. Turbo codes represent the new code structures, which consist of pccc ( parallel serially convolutional code ) and sccc ( serially concatenated convolutional code ). in this paper, the background of turbo codes are firstly introduced, which includes the base principle of error correction code 、 block code and convolutional code ; the principle of turbo code and the iterative decoding is secondly expanded ; the key decoding algorithm : a revised map algorithm and iterative decoding theory are detailed ; then, a new turbo code structure : hccc ( hybrid concatenated convolutional code ) is presented, and the capacity of this code method is analyzed, the average capacity upper bound is derived ; at last, this code is simulated on awgn ( additive white gaussian noise ) channel and rayleigh fading channel

    本文首先介紹了turbo碼的背景知識，包括差錯控制的基本原理、分組碼和卷積碼；然後闡述了turbo碼的基本原理，包括turbo編譯碼器結構及迭代譯碼原理；較為詳細地描述了關鍵的譯碼演算法： ?種改進的最大后驗概率（ map ）譯碼演算法及迭代譯碼演算法；提出了一種新的turbo碼結構：混合turbo碼（混合級聯卷積碼） ；並用編碼性能聯合界分析方法對混合turbo碼進行了性能分析，得出了其平均性能上界；並在高斯白噪聲通道和瑞利衰落通道上分別作了一些應用研究及計算機模擬實驗。
  5. Another advantage, contrast to using convolutional codes or turbo codes, is its low complexity while maintain high ber performance because the check equations are used to terminate the both iterations. we develop the theoretical error free feedback bound for bpcm - id and predict the threshold for decder convergence using the extrinsic information ransfer chart ( exit )

    利用非正則ldpc具有不同度的信息節點概率密度演化的差異，對高階星座中具有較高級別的子通道提供額外的保護，可使迭代反饋判決時，星座子集擁有最大的無錯反饋歐氏距離調和均值，從而改善系統的迭代收斂特性。
  6. Convolutional coding is a coding scheme often employed in deep space communications and recently in digital wireless communications. it offers an alternative to block codes for transmission over a noisy channel

    卷積碼被運用於衛星通信和無線通信系統中，它提供了一種不同於分組碼的在噪聲通道下傳輸信息的一種編碼方案。
  7. We discuss the bit error rate of the convolutional code, turbo code encoder and decoder theory as well as the performance in awgn channel and rician channel, and present the result of simulation

    討論了rs與卷積碼級聯的誤碼率問題， turbo碼的編譯碼原理及其在awgn通道和rician通道中的性能，並給出了相應的模擬結果。
  8. 2. aiming at the convolutional code with long encoding restriction we adopt the fano sequential decoding algorithm to implement the decoder

    2 、針對編碼約束度比較大的卷積碼，採用fano序列譯碼演算法來實現譯碼。
  9. The iess 309 standard indicates two decoding methods, we focus on the systemic convolutional code with long encoding restriction which is 36 bit and adopt the fano sequential decoding algorithm to implement the decoder

    在協議中規定了兩種譯碼的方式，我們主要是針對編碼約束度為36的系統卷積碼，採用fano序列譯碼演算法來實現其譯碼，並進行了模擬。
  10. There are many decoding schemes for convolutional code, such as sequence decoding algorithm, fano algorithm, viterbi algorithm. but in fact, what ' s used widely is viterbi decoding algorithm. the viterbi decoding algorithm, proposed in 1967 by viterbi, is a decoding process for convolutional codes in memory - less channel, which takes full advantage of convolutional codes. since viterbi algorithm is proposed, it has obtained rapid development whether in theoretics or in practice and been applied to all kinds of data transmission systems, especially to digital wireless communications and deep space communications

    卷積碼的譯碼演算法方案有很多，如序列譯碼演算法、 fano演算法、 viterbi演算法，但是真正大規模應用的還是viterbi演算法。 viterbi譯碼演算法是1967年viterbi提出的，它是一種對無記憶通道卷積碼進行譯碼的演算法。它充分發揮了卷積碼的特點，因而自viterbi演算法提出以來，無論在理論上還是在實踐上都得到了極其迅速的發展，並廣泛的應用於各種數據傳輸系統，特別是無線通信和衛星通信系統中。
  11. The transmit circuit includes convolutional encoding, framing, differential encoding, shaping filter, pn generator, hopping pattern generator, etc. the main part of receive circuit is matched filter

    發送電路包括卷積編碼、成幀、差分、成形濾波、 pn發生器和跳頻圖案發生器等；接收電路的主要部分是匹配濾波器。
  12. Our object is an intermediate frequency modem of a software defined radio transmitter - receiver of multi - service, multi - modulationmode and multi - processdatarate. first, related software defined radio theory is introduced ; later, channels of transmitter - receiver are designed with consideration of data format, modulation, fec, interwaving. and scrambling ; emphasis is placed on theory and implementation of an audio compression algorithm cvsd ( continuous variable slope delta modulation ) and a fec technique convolutional coding - decoding

    本文首先介紹了相關的軟體無線電理論；然後完成了包括數據格式，調制方式，糾錯碼方式，交織器和擾碼器等部分的中頻數據機通道設計；接著著重介紹了系統中使用的音頻壓縮演算法cvsd （連續可變斜率增量調制）的原理和實現，以及作為前向糾錯碼的卷積碼編碼理論和編解碼的高效實現。
  13. In the proposed scheme, the outer code comprising several block codes for error detection in parallel, and the inner code employing a recursive systematic convolutional ( rsc ) code for error correction, are linked by an interleaver

    本文所討論的體制中，串列級連碼的外碼由多個分組檢錯子碼構成，內碼是一個系統遞歸卷積碼。
  14. Both quantum error correcting code and quantum error avoiding code are practical quantum channel coding schemes. we present in this dissertation a new quantum error correcting code scheme, named serially concatenated quantum convolutional code

    克服量子通道噪聲的編碼就稱為量子通道編碼，實用的量子通道編碼包括量子糾錯碼和量子避錯碼。
  15. We first design the construction modules of serially concatenated quantum convolutional code. and then design the corresponding code - coding gate - array. in quantum error avoiding code, we first unified the definitions of decoherence - free subspace, and then proved that all these definitions are equivalent

    在量子避錯碼方面，統一了各種無消相干子空間的定義，證明了各種定義之間的等價性，同時提出一種利用群論方法構造無消相干子空間的簡單方案。
  16. Many of communication systems take the convolutional code and viterbi algorithm as the channel coding scheme. the viterbi algorithm decoding is a kind of maximum likelihood decoding, and its performance is good over additive white gaussian noise ( awgn ) channel, but when burst errors occur, the decoding performance may be greatly degraded

    維特比譯碼演算法是最大似然譯碼，在由高斯白噪聲引起的隨機錯誤的通道中有良好的性能，但當通道錯誤集中或為突發錯誤通道時，維特比譯碼演算法則性能急劇下降。
  17. Convolutional coding is an error - control coding to process continuous data stream. the viterbi decoding algorithm is a type of maximum likelihood algorithm for memoryless channel. the convolutional coding employed with viterbi decoding algorithm has already become indispensable channel coding scheme in modern communication systems

    卷積碼是一種糾錯編碼，它可以對連續的數據流進行處理; viterbi譯碼演算法是一種對無記憶通道卷積碼進行譯碼的最大似然譯碼演算法，使用viterbi譯碼演算法的卷積碼已成為現代通信系統不可缺少的通道編碼方案。
  18. The circuit to fulfill the byte processing function includes all parts between the modules on convolutional decoding and transfer stream de - multiplexing, consisting of the modules on data de - interleaving, rs decoding, data de - scrambling and format transforming

    完成位元組處理功能的電路包括從卷積解碼輸出後到傳輸流解復用的所有部分，由解交織、 rs解碼、解擾碼和格式轉換等模塊組成。
  19. An advantage of convolutional coding is that it can be applied to a continuous data stream as well as to blocks of data. is - 95, a wireless digital cellular standard for cdma ( code division multiple access ), employs convolutional coding. a third generation wireless cellular standard adopt turbo coding, which stems from convolutional coding

    Cdma （ codedivisionmultipleaccess ）數字蜂窩標準is - 95採用卷積碼作為其糾錯方案，現在已經通過的第三代數字蜂窩無線通信標準（ 3g ）建議採用turbo碼作為糾錯方案，該碼也是屬于卷積碼。
  20. But for the same reason, it have n ' t the same diversity feature as space - time block code, as well as it have n ' t the same error correction capability as convolutional code or trellis code modulation

    由於空時格碼兼顧了分集和通道編碼，導致其分集特性不如空時分組碼，糾錯能力不如卷積碼和格形編碼調制。
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