hybrid concatenated convolutional coded modulation ( hctcm ) is studied . performance bound and design criteria of hctcm are given 研究了混合級聯(lián)卷積編碼調(diào)制,得到了它的性能限和設(shè)計準則。
in chapter 3, encoder structure and decoder structure and decoding algorithms of hybrid concatenated convolutional code ( hccc ) is studied 第三章研究了混合級聯(lián)卷積編碼的編譯碼結(jié)構(gòu)、性能限和設(shè)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(lián)碼發(fā)展歷史和turbo碼簡要介紹的基礎(chǔ)上,著重研究了串行級聯(lián)卷積碼(sccc)和串行級聯(lián)網(wǎng)格編碼調(diào)制(sctcm)的編譯碼方法、糾錯性能和設(shè)計原則。
in the first part of this thesis, the iterative process structure which is based on the extrinsic information exchange between the siso ( soft in soft out ) component decoders of pccc ( parallel concatenated convolutional codes ) is discussed 首先以并行級聯(lián)卷積碼(pccc)為對象詳細的討論了分量碼的軟輸入軟輸出(siso)算法和在此基礎(chǔ)上基于外信息交換的迭代解碼算法。
in chapter 1, a survey of ccc and stc, including their development is presented . in chapter 2, encoder structure, decoder structure and interleaver of parallel concatenated convolutional code ( pccc ) and serially concatenated convolutional code ( sccc ) are studied . symbol-wise siso algorithm and bit-wise siso algorithm are given 在第二章中,系統(tǒng)分析了并行級聯(lián)卷積編碼和串行級聯(lián)卷積編碼的編碼結(jié)構(gòu)、交織器的類型、譯碼結(jié)構(gòu)以及基于符號和基于比特的siso算法。