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component coding中文是什么意思

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  • Based on the simulation results , the key techniques for the design of turbo codes , including the choice of component codes , the design of interleaver , trellis termination schemes and puncturing methods , are discussed deeply . by measuring the statistical characteristic of extrinsic information from component decoders , new iterative stopping criteria and snr estimation updator are devised . also , it is used to implement synchronization of carrier phase
    本文首先對(duì)turbo碼的基本編譯碼原理進(jìn)行分析,在仿真結(jié)果的基礎(chǔ)上對(duì)turbo碼設(shè)計(jì)中的分量碼選擇、交織器設(shè)計(jì)、編碼器狀態(tài)歸零方案以及刪余方式等部分關(guān)鍵問(wèn)題進(jìn)行探討;通過(guò)考察外部信息的統(tǒng)計(jì)特性,設(shè)計(jì)了新的迭代停止準(zhǔn)則和snr估計(jì)更新器,并利用外部信息實(shí)現(xiàn)串聯(lián)載波相位同步;最后對(duì)turbo均衡進(jìn)行簡(jiǎn)要分析。
  • The research for key techniques of turbo codes is processed . it includes , ? the design of optimal component codes and the performance of asymmetric turbo codes are analyzed ; ? a search algorithm for short random interleaver based on the distance spectrum and ids criteria is carried out and simplified ; ? random puncturing method to improve the weight distribution of turbo codes with some special code rates is analyzed and simulated . ? the effect of different schemes of trellis termination to the performance of turbo codes is analyzed ; ? a new low complexity decoder structure is provided ; 5
    對(duì)turbo碼的部分關(guān)鍵問(wèn)題進(jìn)行分析和改進(jìn),主要包括: ?分析了最優(yōu)分量碼的設(shè)計(jì)和非對(duì)稱turbo碼的性能; ?設(shè)計(jì)了基于距離譜和ids的短隨機(jī)交織器搜索算法并進(jìn)行了簡(jiǎn)化; ?提出了采用隨機(jī)刪余方式改善特定高碼率turbo碼重量分布特性的方法; ?分析了不同編碼器狀態(tài)歸零方案對(duì)turbo碼性能的影響; ?提出了一種降低實(shí)現(xiàn)復(fù)雜性的turbo迭代譯碼器結(jié)構(gòu)。
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