coded modulation 中文意思是什麼

coded modulation 解釋
編碼調制
  • coded : 編成代碼的
  • modulation : n 調整，調節；（聲調的）抑揚，變化；【音樂】轉調，變調；【無線電】調制。 amplitude modulation 振...
  1. Phase sweep space - time bit interleave coded modulation

    掃相空時比特交織編碼調制
  2. Optimal design of pragmatic adaptive turbo coded modulation

    編碼調制的優化設計
  3. This thesis analyzed the error performance of mfsk and mpsk modulator in hf with optimal receiver, studied the shortcoming and strongpoint of several typical short - wave data transmission systems and their performance over fading and intersymbol interference channels. the theory and key technical of adaptive modem is discussed. in the last, an efficient modulation scheme - block coded modulation is introduced into hf radio systems to improve the efficiency of hf data transmission, this paper also proposes a hf data transmission system scheme composed of a block coded modulator and a decision feedback type adaptive equalizer

    本文在對短波數傳兩種常見調制方式fsk及psk最佳解調性能分析的基礎上，討論了幾種採用典型調制技術的短波數傳系統（如時頻調制、多進制頻移鍵控慢跳頻、 chess系統）原理、優缺點以及抗衰落和抗符號間干擾的性能；分析了自適應串列數傳系統抗短波通道衰落和多徑干擾的原理、關鍵技術；在本文的最後引入一種有望解決短波數傳系統低效率狀況的調制方式bcm -分組編碼調制，給出了一個採用bcm技術與自適應均衡技術相結合的短波數傳系統方案，並通過計算機模擬進行了初部驗證。
  4. Adaptive coded modulation for rayleigh fading channels

    瑞利衰落通道下的自適應編碼調制技術
  5. Log likelihood ratio decoding of ldpc coded modulation in ofdm system

    編碼調制的對數似然比譯碼
  6. In this thesis, we compared the two acm through simulation, and analyzed their merits and flaws. then we present an optimal design scheme of average spectral efficiency in adaptive coded modulation system

    本文對上述兩種自適應編碼調制策略做了比較，分析了各自的優缺點，並提出了一種基於平均頻譜效率的自適應編碼調制的優化方案。
  7. This paper is mainly considered : 1 ) how joint coded modulation transmitter is designed based on the iterative decoder. 2 ) the combination of ldpc code with bit - interleaved coded modulaton. 3 ) the optimization of two dimensional signal constellations in joint coded modulation with iterative decoder

    本文研究工作的重點在於: 1 ）迭代譯碼對聯合編碼調制方案設計的影響; 2 ）新的糾錯編碼和比特交織編碼調制的有機結合; 3 ）高階星座的最優化問題。
  8. The technology of trellis coded modulation ( tcm ) and viterbi decoding which could achieve high transmitting rate at a low bit ' error rate are demonstrated in detail. and then the design and achievement of itu - t v. 32 modem that based on one - dimensional tcm are expatiated. the paper also discusses the multi - dimensional tcm the itu - t v. 34 modem that based on it and tcm ' s application in the carrier communication

    文中深入研究了可保證一定誤碼率的情況下能實現較高傳輸速率的網格編碼調制（ tcm ）技術和維特比譯碼技術，闡述了基於單維網格編碼調制的itu - tv . 32modem的設計和實現，討論了多維網格編碼調制技術和基於其的itu - tv . 34modem ，並對網格編碼調制在載波通信中的應用作了簡單介紹。
  9. For its error correction performance extremely close to the shannon limit, from the beginning, turbo codes attracts the eyes of enormous professionals and researchers. in turn, it is called the greatest contribution after ungerboeck ' s trellis coded modulation ( tcm )

    因為它具有極其逼近香農極限的糾錯性能，從一開始turbo碼便吸引了通信領域無數專家學者的關注與研究，進而被譽為繼ungerboeck提出格狀編碼調制（ tcm ）以來，通道編碼領域最偉大的貢獻。
  10. The paper discusses the part of asic design of tcm ( trellis coded modulation ) in hdtv 8vsb terrestrial channel broadcasting receiver chip. in testing, the tcm can improve the signal - to - noise by 3. 3db compared with uncoded 4 - vsb modulation, and with the 12 path intrasegment interleaving in tcm coding and viterbi decoding, system can control short burst noise error efficiently

    在高清晰度電視通道接收晶元中內碼是8 ? vsb的格狀編碼，在系統性能上使用tcm編碼要比未編碼有3 . 3db的編碼增益，另外在格狀編碼中加入了12路的內交織，可有效的抑制短的突發噪聲對接收端viterbi解碼性能的影響。
  11. Based on this model, this paper is focused on coded modulation, transmit diversity, multipath diversity and their combination

    基於這個模型，集中研究了隱分集、發射分集和多徑分集及其結合技術。
  12. The bit - interleaved coded modulation with iterative decoding for bandwidth - efficient transmission over rayleigh fading channel is studied

    該方案利用ldpc碼校驗矩陣作為系統迭代終止判決準則，可大幅度降低譯碼演算法的平均復雜度。
  13. Bandwidth efficient multilevel coded modulation system based on ldpc codes is described in the last part of this thesis. furthermore, the designing method of combining component code rate and degree distribution is introduced

    介紹了ldpc碼的多層編碼調制系統中，分量碼碼率與度序列分佈聯合最優的設計準則，並給出了相應的理論分析。
  14. Some critical coding and modulation techniques in uav communication have been discussed in this thesis, including differential phase keying ( dpsk ), modulation multiple symbol detection ( msd ), adaptive trellis coded modulation ( atcm ), and space - time coding. this work was supported by the national defense 973 project. uav communication has many sophisticated technologies

    本論文在國防973項目「無人機信息傳輸理論與方法研究」的資助下，結合現代數字通信領域的新技術，根據無人機通信的特點和需求，對其中的幾項關鍵技術做了深入研究。
  15. In detail, they are bit - interleaved coded modulation ( with iterative decoding ), low - density parity - check codes and stf technology. by the performance analysis of bicm ( - id ), which can make code and modulation optimal separately, and achieve maximum possible coding diversity as well as modulation gain, guidelines for its design and an easy algorithm for siso are proposed. design of capacity - approaching of ldpc codes and efficient encoding of them as well as several kinds of its decoding algorithms are investigated

    具體的講，就是討論了基於比特交織的編碼調制技術，並給出了映射方式的設計準則以及核心模塊siso的一種簡單的f - map演算法；研究了編碼最小漢明距隨碼長線性增加的ldpc碼的幾個方面的問題，包括接近香農限碼子集的度分佈對的設計、有效編碼器的實現和各種譯碼演算法的優缺點，並對基於ldpc碼的bicm應用於ofdm傳輸系統中的性能進行了模擬。
  16. In these years, many new technologies are developed and applied to joint coded modulation systems, such as new error - correcting codes, space - time modulation on mimo channels and iterative decoding algorithm

    近年來，隨著新的糾錯編碼、 mimo空時調制以及迭代譯碼方式的出現，聯合編碼調制方案的設計正成為普遍關注的熱點。
  17. Finally, performance of adaptive modulation and coding in 11sdpa system is investigated. multi - code channel structure of physical layer, coded modulation schemes and adaptive transmission parameter selection are analyzed. simulation implementation of fading compensation in flat fading channel and maximum ratio combining ( mrc ) in frequency selective fading channel is investigated

    最後，本文還研究了hsdpa中自適應調制與編碼性能，分析了物理層多碼通道結構、編碼調制方案、自適應傳輸參數選擇，並研究了平坦和頻率選擇性衰落通道中衰落補償和最大比合併（ mrc ）的模擬實現。
  18. Hybrid concatenated convolutional coded modulation ( hctcm ) is studied. performance bound and design criteria of hctcm are given

    研究了混合級聯卷積編碼調制，得到了它的性能限和設計準則。
  19. The performance of tcm over awgn channel is perfect but it is bad over fading channel. there is an effective method to solve this problem that combines interleave technique with coded modulation to get the gain of performance over fading channel. this paper is about a new coded modulation technique ? ? bicm ( bit interleaved coded modulation ) and bicm _ id ( bicm with iterative decoding ), and their performance of bit error rate in different conditions

    本文研究的就是一種將交織技術與編碼調制相結合的新的編碼調制方式? ?比特交織編碼調制（ bicm ， bitinterleavedcodedmodulation ） ，和引入迭代反饋譯碼的比特交織編碼調制（ bicm _ id ， bicmwithiterativedecoding ） ，及它們在不同通道條件下的性能。
  20. The charictrization, construction and searching algorithm of m - ldpc codes were studied and analsised. base on m - ldpc codes, a new joint coded modulation scheme is proposed ( bp - mlc - id ), which differ form conventional mlc schems in that only one channel coder was used

    在上述基礎上，把多級ldpc碼進一步應用於mimo空間，並與空時分組碼有機結合，提出一種新的基於迭代譯碼的時空并行獨立通道聯合編碼調制（ bp - stbc - id ） 。
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