級聯碼編碼 的英文怎麼說
中文拼音 [jíliánmǎbiānmǎ]
級聯碼編碼
英文
concatenated coding- 級 : Ⅰ名詞1 (等級) level; rank; grade 2 (年級) any of the yearly divisions of a school course; gra...
- 聯 : Ⅰ動詞(聯結; 聯合) unite; join Ⅱ名詞(對聯) antithetical couplet
- 碼 : Ⅰ名詞(表示數目的符號或用具) a sign or object indicating number; code Ⅱ量詞1 (指一件事或一類的...
- 編 : Ⅰ動詞1 (編織) weave; plait; braid 2 (組織; 排列) make a list; arrange in a list; organize; gr...
- 編碼 : encoded; code; coded; encrypt; codogram; coding編碼表 encode table; 編碼程序 builder; 編碼尺 code...
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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。In this paper, we consider the concatenation of bose - chaudury - hocquenheim ( bch ) and repetition codes and present soft - decision decoding schemes based on a map ( maximum a posterior probability ) criterion
在本文中,我們考慮了bch碼和重復碼的級聯編碼,並且基於最大后驗概率準則,提出了一種軟判決解碼方法。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。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。Cascaded low - density erasure codes are based on sparse random bipartite graphs. very efficient linear time encoding and erasure recover algorithms with the arbitrarily near erasure channel capacity performance of the codes with respect to the algorithms have made them one of the most optimal coding techniques up to now
基於稀疏隨機二部圖的級聯型低密度糾刪碼因其線性時間的編譯碼演算法和可任意逼近刪除通道容量限而成為目前最佳編碼技術之一。The principles of erasure codes used under binary erasure channels are summarized and erasure codes which belong to standard classes of rs codes are introduced with emphasis on cascaded low - density erasure codes with linear time encoding and erasure recover algorithms. thresholds of regular degree distributions are analyzed. it is shown that low - density erasure codes based on ( d, 2d ) - regular sequences of degree distribution are not close to optimal ( d 3 ). two pares of irregular degree distribution sequences are introduced and a pare of improved right regular sequences of low - density erasure codes are presented, it is testified that the new sequences are asymptotically quasi - optimal. in the meantime, simulations of cascaded low - density erasure codes based on a few types of special sequences of degree distribution available are given, together with performance analyses on these codes
闡述了應用於刪除通道下的糾刪碼基本原理,介紹了兩類標準的rs碼類糾刪碼,重點分析了具有線性時間編碼和恢復演算法的漸近好碼?級聯型低密度糾刪碼,分析了正則度分佈的閾值,對正則低密度校驗碼在刪除通道下的糾錯性能進行了模擬,從理論上證明了基於( d , 2d ) -正則度序列的低密度糾刪碼都不是漸近最優碼( d 3 ) ,同時還分析了非正則低密度校驗碼的度序列設計,基於右邊正則序列提出了一種改進型右邊正則序列,證明了此序列為漸近擬最優的,對基於幾類現有典型度分佈序列的級聯型低密度糾刪碼進行了模擬模擬及性能分析; 3The proposed jtc greatly reduces the intensity and width of the strong dc component, sharpens the correlation peak, eliminates cross - correlations among each input target, and the conjugate cross - correlation between the reference and input targets at the same time. in order to calculate the discriminant probability of the objects, a simple but self - explainable statistic function was presented to show where the true object and false object occurred in the unknown input image sequence
在此基礎上,論文提出了基於位相編碼振幅調制的畸變不變多目標識別聯合變換相關技術,即通過改變隨機位相模板的調制因子的大小來改善相關輸出的性能,一步消除了共軛相關項、輸入待識別圖像之間的互相關項,並大大降低了零級相關峰的能量和寬度。As the step of the color tv ( the second generation ) to the digital tv ( the third generation ) is larger and larger, the research of digital television terrestrial broadcasting ( dttb ) become more and more important in china, we are concentrating on the standard of dttb which is suit for our country after describing and analyzing the technical stipulation and speciality of dttb, this paper compares atsc 8 - vsb with dvb - t cofdm and isdb - t bst - ofdmo the emphasis of this article lies in the technical solution about transferring system, channel coding is important component of dttb, which can resist from the bad circumstances o because of lots of varieties and different performance, channel coding become one of the emphasis of the research work this paper analyzes and researches the theory and performance of the different channel coding particularly, points out an effective theoretic analysis method and computer demo of performance comparison a theoretical method for estimating the performance of concatenated codes is proposed in this paperc this is achieved by combining the performance of single level coding rayleigh fading channel and the character of channel modulation it may be useful to research and development of the future digital television terrestrial broadcasting standard of our country
通道糾錯編碼是數字電視地面廣播傳輸系統的重要組成部分,是抵禦地面惡劣環境的有效手段。由於通道編碼的種類繁多,性能各異,因此是目前研究工作的重點之一。本文詳細分析和研究了幾種通道糾錯編碼的原理和性能,並針對外碼內碼級聯糾錯結合地面通道瑞利衰落提出了一種有效的理論分析方法和性能的計算機比較演示方案,總結了不同級聯方案的性能特點,對於我國目前的數字電視地面廣播標準的研究和通道級聯糾錯方案的確立及其參數選擇具有一定的參考價值。Address of applicant of number of card of the member that name of applicant of full name of the member that ws021 touchs duty to apply for to examine and approve watch enterprise to code duty wu registers date to do tax does tax contacts a phone to apply for to support imposition argument : legal person delegate : date ( official seal ) the place of imposition of proof content categories of taxes that proves much capture imposition belongs to period to answer capture amount already capture amount already capture by name of proof of date of card name pay many capture amount touchs capture imposition circumstance to touch name of tax items of name of capture categories of taxes to have those who owe tax : this watch sets upright type 16 times one type triplet, should be accompanying already duty proof photocopy appears in the newspaper along with all the others
Ws021抵稅申請審批表企業編碼稅務登記號辦稅員姓名申請人名稱辦稅員證號申請人地址聯系電話申請抵稅款理由:法人代表:年月日(公章)證實多繳稅款的憑證內容稅種稅款所屬時期應繳金額已繳金額已繳憑證名稱繳納日期憑證字號多繳金額抵繳稅款情況抵繳稅種名稱稅目名稱有欠稅的應先抵繳欠稅抵繳本期稅款金額稅款所屬時期抵繳金額申請數批準數申請數批準數留抵總金額基層稅務機關核實意見年月日(簽章)上級稅務機關批準意見年月日(簽章)注:此表16開豎式一式三份,應隨同已稅憑證復印件一併上報。If a retransmission is needed, additional redundant bits for error correcting are sent. concatenation of an inner code and an outer code may provide a high coding gain and the capacity of a long code to correct errors
級聯碼是將兩個或多個單碼級聯,在不增加譯碼復雜度的情況下,可以得到高的編碼增益,達到與長碼相同的糾錯能力。Amari has introduced a mixture of expert nets with probability gate based on statistics. the use of art - type network as the gate net of mixture of expert nets is proposed in this thesis. in addition, comparing with the classical art that has only single layer categorization ability, the concepts of cascaded art nets and embedded art nets are introduced too
Amari的概率門混合專家系統屬于無導師學習中統計方法的專家系統,我們通過將概率門用art門來代替,並用art的級聯與嵌套構造成無導師學習的聚類方法即學習矢量編碼法的專家系統。Firstly, a new joint filterbank precoders and decision feedback equalizers structure is proposed, and the corresponding optimization result based on the maximal mutual information criterion is derived. secondly, the concept of dt canonical model is proposed, which is very suitable for the task of blind signal processing based on the second - order statistical of the observations. thirdly, the methods of blind equalization and identification of the tv dispersive channels are researched systematically based on the proposed dt canonical model, and a subspace blind identification algorithm of the time - invariant channel matrix is developed
本文創新性的成果在於:提出了預編碼-判決反饋聯合均衡系統結構,並從理論推導得出了對應的最大互信息量最優化設計結果;首次提出了時變色散通道的離散正則模型概念,該模型適宜於利用觀察數據的二階統計量進行盲信號處理;基於離散正則模型對時變色散通道進行了系統的盲均衡和盲辨識方法研究,提出了對時不變通道矩陣的子空間盲辨識演算法;針對誤差傳播效應問題,提出了可以消除誤差傳播效應的兩級盲辨識演算法;提出了基於離散正則模型的直接盲均衡演算法;提出了基於特徵恢復思想的神經網路直接自適應盲均衡演算法。Conventionally, dtv systems adopt coding schemes such as rs or convolutional codes, or concatenated codes, where the error correction performance is still quite far away from the shannon limit
通常的,數字電視系統採用的通道編碼方案為rs碼或卷積碼,或二者的級聯碼,它的糾錯性能與香農極限相比,仍有一定的距離。Erasure codes which belong to standard classes of rs codes and their erasure correcting principles are introduced with emphasis on cascaded low - density erasure codes with linear time encoding and erasure recover algorithms. the encoding and decoding complexities of these codes are analyzed. 2
介紹了標準的rs碼類糾刪碼及其糾刪原理,重點介紹了具有線性時間編碼和恢復演算法的漸近好碼?級聯型低密度糾刪碼,分析了這幾類糾刪碼的編譯碼復雜度; 2Analysis of schemes on turbo - rs concatenated codes
級聯碼編譯碼方法分析The paper studies the performance of turbo code and the concatenated code which makes up of rs code and convolutional code
本文對rs與卷積級聯編碼和turbo碼的性能分別進行了研究。Furthermore, this paper analyzes the error control system based on concatenated code, mainly including the formation, encoding, decoding of rs code and convolutional code, interleaving, and deinterleaving
本文同時也就基於級聯碼的差錯控制系統設計作了分析,主要包括rs碼和卷積碼的構成、編碼、譯碼、交織和去交織。The performance bounds and design criteria for hccc are developed. the result for hccc is extended to generalized concatenated coding. encoder, decoder structure and design criteria of generalized concatenated coding are studied
將結果推廣到廣義的級聯卷積編碼中,分析了廣義級聯卷積編碼的編碼結構、譯碼演算法和設計準則。With the developments of the concatenated codes and turbo codes reviewed, the serially concatenated convolutional codes that are the serial counterpart of the turbo codes are introduced firstly in this paper
本文在對級聯碼發展歷史和turbo碼簡要介紹的基礎上,著重研究了串列級聯卷積碼( sccc )和串列級聯網格編碼調制( sctcm )的編譯碼方法、糾錯性能和設計原則。The principle of coding and decoding for turbo codes, including pccc, sccc and hccc, are discussed ; based on the introduction of the modified and simplified map algorithms on awgn channel for turbo codes, multiplicative and additive siso decoding algorithms adapted to general iterative decoding are derived
論述了turbo碼(包括pccc 、 sccc和hccc )的編譯碼原理,在介紹awgn通道上用於turbo譯碼的修正map譯碼演算法基礎上系統推導了適用於級聯碼迭代譯碼的通用siso譯碼演算法。分享友人