2 . aiming at the convolutional code with long encoding restriction we adopt the fano sequential decoding algorithm to implement the decoder 2 、針對(duì)編碼約束度比較大的卷積碼,采用fano序列譯碼算法來實(shí)現(xiàn)譯碼。
However , the sequential decoding algorithm is not fully developed because of its complication and limited range of application , which lead to relatively few materials particularly in board 而卷積碼的序列譯碼方法因?yàn)槠溆布?fù)雜度高和應(yīng)用范圍小,并不十分流行,相關(guān)的參考文獻(xiàn)也很少,尤其在國內(nèi),相關(guān)的研究非常少。
The iess 309 standard indicates two decoding methods , we focus on the systemic convolutional code with long encoding restriction which is 36 bit and adopt the fano sequential decoding algorithm to implement the decoder 在協(xié)議中規(guī)定了兩種譯碼的方式,我們主要是針對(duì)編碼約束度為36的系統(tǒng)卷積碼,采用fano序列譯碼算法來實(shí)現(xiàn)其譯碼,并進(jìn)行了仿真。
In order to implement the iess 309 standard and sequential decoding for the convolutional codes in satellite digital receiver , we have made a deep research in sequential decoding algorithm and solved some problems on implementing the sequential decoder for convolutional codes 為了實(shí)現(xiàn)iess309協(xié)議標(biāo)準(zhǔn),在衛(wèi)星數(shù)字接收機(jī)中實(shí)現(xiàn)卷積碼的序列譯碼,我們深入的研究了序列譯碼算法,解決了序列譯碼器實(shí)現(xiàn)的過程中存在的一些問題。
Sequential decoding is a limited memory technique for decoding tree codes. Sequential decoding is mainly used is as an approximate decoding algorithm for long constraint-length convolutional codes.