An improved sova - based decoding scheme for turbo - stcm 的并行級聯(lián)空時格碼的譯碼算法
That specifies the decoding scheme 指定解碼方法的
Novel coding and decoding scheme for modified optical duobinary signal transmission 新型改進光雙二進制傳輸?shù)木幗獯a方案
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(lián)編碼,并且基于最大后驗概率準則,提出了一種軟判決解碼方法。
There are two decoding schemes for convolution code , such as sequence decoding algorithm and viterbi algorithm . because of simplicity 、 excellent performance , viterbi decoding algorithm is abroad applied 卷積碼的譯碼算法有序列譯碼和viterbi譯碼兩大類, viterbi譯碼算法由于其簡單、性能優(yōu)異等特性得以廣泛應用。
3 . by theoretical analysis and simulation , quantization decoding of ldpc codes is studied . an efficient quantization - decoding scheme is proposed which can greatly reduce the decoding complexity with a little performance loss 采用理論分析和仿真相結(jié)合的方法研究了ldpc碼的量化譯碼,提出了一種高效的量化譯碼實現(xiàn)方案,該方案能夠大大降低譯碼復雜度,同時譯碼性能非常接近連續(xù)譯碼。
In this dissertation , some fast fractal image encoding and controllable progressive decoding scheme are proposed , as follows : ( 1 ) because of existed fast encoding methods are often at the cost of reconstructed image quality , or can only obtain poor speed - up ratio 為此,本文在快速分形編碼方面和漸進解碼方面作了以下研究工作: ( 1 )針對目前許多分形編碼加速方法或者以犧牲解碼圖像質(zhì)量為代價,或者加速效果不明顯的情況。
The pulsar system is developed with the following parts : the robust feature extraction based on auditory mechanisms , acoustic modeling with mandarin pronunciation characteristics , search space building based on wfst , and efficient global decoding scheme 本研究實現(xiàn)的系統(tǒng)pulsar包括:基于聽感知機理的抗噪聲特征提取,針對漢語發(fā)音特點的聲學建模,基于加權有限狀態(tài)自動機( wfst )的搜索空間,融合聲學模型和語言模型的高效全局解碼。
A serially concatenated iterative scheme ( bpcm - id ) combining low - density parity - check codes ( ldpc ) with multilevel modulation is proposed . differ from other serially concatenated iterative decoding schemes , the whole iterative process of bpcm - id is divided into outer iteration and inner iteration to avoid too much errors feedback to the demapper which may cause severe degradation of decoding performance 論文提出了一種新的多級ldpc碼的概念、基本特性、構造準則和搜索算法,給出一種融合mlc / bicm的聯(lián)合編碼調(diào)制系統(tǒng)框架,與傳統(tǒng)mlc系統(tǒng)區(qū)別在于用一個多級ldpc碼取代多個分量碼。
There are many decoding schemes for convolutional code , such as sequence decoding algorithm , fano algorithm , viterbi algorithm . but in fact , what ' s used widely is viterbi decoding algorithm . the viterbi decoding algorithm , proposed in 1967 by viterbi , is a decoding process for convolutional codes in memory - less channel , which takes full advantage of convolutional codes . since viterbi algorithm is proposed , it has obtained rapid development whether in theoretics or in practice and been applied to all kinds of data transmission systems , especially to digital wireless communications and deep space communications 卷積碼的譯碼算法方案有很多,如序列譯碼算法、 fano算法、 viterbi算法,但是真正大規(guī)模應用的還是viterbi算法。 viterbi譯碼算法是1967年viterbi提出的,它是一種對無記憶信道卷積碼進行譯碼的算法。它充分發(fā)揮了卷積碼的特點,因而自viterbi算法提出以來,無論在理論上還是在實踐上都得到了極其迅速的發(fā)展,并廣泛的應用于各種數(shù)據(jù)傳輸系統(tǒng),特別是無線通信和衛(wèi)星通信系統(tǒng)中。