bch 中文意思是什麼

bch 解釋
廣播通道
  1. 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。
  2. From these conclusions some results are obtained on absolute minimal trellis complexities of extended primitive bch codes and their dual codes of primitive bch codes

    由此得出有關本原bch碼的擴展bch碼及其對偶碼絕對最小網格圖復雜度的若干結論。
  3. Quick algorithm for bch error - correcting decoding of h. 261 video coder recommendation

    前向糾錯碼的快速演算法
  4. The concept of good codes and proper codes for both error detection and correction is presented. it is shown that the binary perfect codes and the primitive double - error - correcting bch codes and their extended codes are proper for both error detection and correction. the primitive triple - error - correcting bch codes with length 2 " " - 1 and their extended codes are proper for odd m > 5, not for even m > 6

    本文的主要工作是把目前關于只檢錯時線性碼不可檢錯誤概率的研究推廣到同時糾錯和檢錯的情況，獲得了同時糾檢錯時線性碼不可檢錯誤概率的解析表達式，提出了糾檢錯好碼和最佳糾檢錯碼的概念，並證明了二進制完備碼及其擴展碼是最佳糾檢錯碼；糾正兩個錯誤二進制本原bch碼及其擴展碼是最佳糾檢錯碼；碼長n = 2 ~ m - 1 、糾正三個錯誤本原bch碼，當m為大於等於5的奇數時是最佳糾檢錯碼；當m為大於等於6的偶數時，不是最佳碼。
  5. Researches the basis watermark managing works particularly and systemly. there are many works to do on watermak technology except watermark embedding and extraction arithmetics such as the watermark choosing, encoding, modulating, demodulating and the watermark capacity. these prior and ultimate works ensure that the arithmetic is brought into effect. just understanding these, this paper analyses and researches the basic watermark theoretics in many pages. it brings forward chaos modulation on watermark modulating, brings forward chaos permuting on image permuting, introduces bch encoding on letter watermark processing and discusses the approximate estimate of the watermark capacity in dct domain and dwt domain by applying the current communication theoretics. there works not only extend ways for the later work but also are significative on watermark research

    全面系統地研究了水印信號的處理技術數字水印技術除了水印嵌入和提取的演算法外，還有許多工作需要做，如水印的選碼、編碼、調制、解調、能量的確定等等，這些預處理和后處理工作是演算法有效實施的必要保證，正是基於這樣的認識，本文利用較大的篇幅對水印的基本理論知識進行了詳細的分析和研究，在水印的調制方面，提出了混沌調製法；在圖像水印的置亂方面，提出了混沌置亂法；在文字水印的處理上，引入了bch編碼；在水印容量分析方面，結合現代通信理論，對圖像在dct域和小波域內的水印容量估算進行了詳細的探討，這些工作不僅為本文後期工作鋪平了道路，而且對數字水印的研究具有重要的意義。
  6. Official languages authentic chinese text merchant shipping prevention of oil pollution regulation, merchant shipping control of pollution by noxious liquid substances in bulk regulations, merchant shipping reporting of pollution incidents regulations, merchant shipping bch code regulations, merchant shipping ibc code regulations and merchant shipping prevention of oil pollution regulations exemption notice order

    21 .法定語文中文真確本商船防止油類污染規例商船控制散裝有毒液體物質污染規例商船報告污染事故規例商船散化
  7. In order to keep the signal transmission unfailing, bch error - correcting code is applied in the system. this kind of system does n ' t affect the application television broadcasting normally and does n ' t increase video signal bandwidth additionally. it optimizes the transmission circuit for control signals and solves the problem of time - delaying, thereby it promotes the transmission more efficiently and economically

    這種新型的應用電視在不影響電視正常播放和不增加電視傳輸帶寬的前提下，將控制信號搭載在視頻信號通道上運行，優化了控制信號傳輸線路，解決了時延問題，達到了利用電視信號逆程資源的目的，真正意義上實現了單纜傳輸監控系統，促進了監控系統的高效化和經濟化。
  8. The features of the proposed algorithm include that : ( l ) the algorithm reduces error probabilities of detection by use of bch code

    該演算法具有如下特點： （ 1 ）應用bch編碼來降低隱藏信息的檢測錯誤概率。
  9. Is the eth residue of p. since the number of quadratic residue mod p is, we can guess the number of eth residue mod p is 2 ^, and then prove this property. on the basis of eth residue, we construct a type of eth residue code of length p which is an odd prime, and extend some properties of quadratic residue codes. alsi ) we construct a cubic residue code over f % of length 31 and a 4th residue code over fs of length 13. according to the properties of the bounds of bch codes, we determine the minimal distance of [ 31, 21 ] code is 5, which means this code ; can correct two errors

    由模p的二次剩餘個數為個，可猜測模p的e次剩餘的個數為個，本文給出了該性質的證明。在e次剩餘的基礎上，本文構造了一類字長p為奇素數的e次剩餘碼，討論了它的性質，從而推廣了二次剩餘碼的一些結果。利用所導出的理論結果，我們構造了長為31的二元三次剩餘碼和長為13的三元四次剩餘碼，利用bch碼上下界的性質，進一步確定了31 ， 21碼的極小距離為5 ，它可以糾正兩個錯誤。
  10. These sub - codes can be the same or not, bch code, single parity check code, extended hamming code, and so on

    這些子碼可以相同也可以不同，可以是bch碼、單奇偶校驗碼、擴展hamming碼等。
  11. Realization of decoding binary bch codes based on peterson algorithm

    碼軟體解碼的實現
  12. At last, by using the factorization properties of cyclotomic polynmials on finite fields and the construction characteristic of cyclic codes, we present the relation of the period distribution of cyclic codes and the period distribution of their dual codes, establish the explicit formula for the number of the codewords without inner - period of the cyclic codes and their dual codes, find the method for computing the dimension and the period distribution of narrow - sense primitive bch codes, and study the inverse question of period distribution of cyclic codes

    最後，利用有限域上分圓多項式的分解特性和循環碼的構造特點，揭示了循環碼的周期分佈與其對偶碼周期分佈之間的內在聯系，確定了一般循環碼及其對偶碼內無內周期碼字的精確計數公式，決定了狹義本原bch碼的維數與周期分佈，討論了循環碼周期分佈的反問題。
  13. The scheme of implementation of error correcting codes is proposed for the vhf / uhf software radio transceiver, which consists of bch encoder, tcm encoder, interleaver in the transmitter and their counterparts in the receiver : bch decoder, viterbi decoder and deinterleaver

    該部分包括發射端的bch編碼、 tcm網格編碼、交織，以及在接收端相對應的bch譯碼、 viterbi譯碼、解交織等。
  14. Bch decode amp; check algorithm with assemble language in wireless data transmission

    演算法在無線數碼中應用
  15. Bch band chorus

    分頻段合唱
  16. The presented method is shown to be right through computer simulation for the ( 23. 12 ) golay code and the ( 15, 7 ) bch code

    對golay碼和bch碼的計算機模擬表明，本文提出的方法是正確的。
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