空間通信高碼率QC-LDPC碼的優(yōu)化構(gòu)造
發(fā)布時間：2019-02-28 07:52
【摘要】：為了研究高糾錯性能和易實現(xiàn)的高碼率準循環(huán)低密度奇偶校驗(quasi-cyclic low-density parity-check,QCLDPC)碼,提出了基于原模圖擴展的碼優(yōu)化構(gòu)造方法:根據(jù)優(yōu)化的基本原模圖模板,通過擴展該圖校驗節(jié)點關(guān)聯(lián)的復(fù)合變量節(jié)點,且增加其子矩陣的維度,構(gòu)造所需碼長、碼率的高碼率碼。采用針對準循環(huán)結(jié)構(gòu)基矩陣的漸進邊增長(progressive edge growth,PEG)擴展和準循環(huán)-漸進環(huán)外消息度(quasi-cyclic approximated cycle extrinsic message degree,QC-ACE)優(yōu)化搜索循環(huán)置換子矩陣偏移量,聯(lián)合優(yōu)化與改善編碼碼字的圍長與環(huán)分布關(guān)系,來提高碼字的誤碼率性能。仿真表明:采用該方法構(gòu)造的編碼具有較好的誤比特率性能,且高碼率碼具有高頻譜效率,該方法可用于設(shè)計高速空間信息傳輸所需的高效編碼。
[Abstract]:In order to study the high error correction performance and easy realization of high bit rate quasi cyclic low density parity check (quasi-cyclic low-density parity-check,QCLDPC) codes, a code optimization method based on extended primitive pattern is proposed. By extending the complex variable node associated with the checkout node in the graph and increasing the dimension of its submatrix, a high code rate code with the required code length and bit rate is constructed. The asymptotic edge growth (progressive edge growth,PEG) extension for quasi-cyclic structural basis matrix and the quasi-cyclic-asymptotic outer message degree (quasi-cyclic approximated cycle extrinsic message degree,QC-ACE) are used to optimize the searching cyclic replacement submatrix offsets. In order to improve the bit error rate (BER) performance of the codeword, the relationship between the girth and the ring distribution of the codeword is optimized and improved jointly. Simulation results show that the proposed method has good bit error rate (BER) performance and high spectral efficiency. The proposed method can be used to design efficient coding for high-speed spatial information transmission.
【作者單位】： 杭州電子科技大學通信工程學院;東南大學移動通信國家重點實驗室;
【基金】：浙江省自然科學基金項目(LY17F010019) 國家自然科學基金項目(61471152) 浙江省科技計劃項目(2015C31103) 東南大學移動通信國家重點實驗室開放研究項目(2014D02)
【分類號】：TN911.22
[Abstract]:In order to study the high error correction performance and easy realization of high bit rate quasi cyclic low density parity check (quasi-cyclic low-density parity-check,QCLDPC) codes, a code optimization method based on extended primitive pattern is proposed. By extending the complex variable node associated with the checkout node in the graph and increasing the dimension of its submatrix, a high code rate code with the required code length and bit rate is constructed. The asymptotic edge growth (progressive edge growth,PEG) extension for quasi-cyclic structural basis matrix and the quasi-cyclic-asymptotic outer message degree (quasi-cyclic approximated cycle extrinsic message degree,QC-ACE) are used to optimize the searching cyclic replacement submatrix offsets. In order to improve the bit error rate (BER) performance of the codeword, the relationship between the girth and the ring distribution of the codeword is optimized and improved jointly. Simulation results show that the proposed method has good bit error rate (BER) performance and high spectral efficiency. The proposed method can be used to design efficient coding for high-speed spatial information transmission.
【作者單位】： 杭州電子科技大學通信工程學院;東南大學移動通信國家重點實驗室;
【基金】：浙江省自然科學基金項目(LY17F010019) 國家自然科學基金項目(61471152) 浙江省科技計劃項目(2015C31103) 東南大學移動通信國家重點實驗室開放研究項目(2014D02)
【分類號】：TN911.22
【相似文獻】
相關(guān)期刊論文 前10條
1 劉春;王海衛(wèi);謝長生;裴先登;;一種N/(N+1)型高碼率游長受限碼編碼方法[J];華中科技大學學報(自然科學版);2007年11期
2 張中培,靳蕃;高碼率Turbo碼的結(jié)構(gòu)及特性[J];西南交通大學學報;2000年04期
3 郭立浩;蔣培文;鄭雪峰;盧滿宏;;TPC編碼在高碼率數(shù)傳中的應(yīng)用[J];飛行器測控學報;2010年05期
4 巫光福;王琳;;一種短小的高碼率LDPC碼設(shè)計[J];應(yīng)用科學學報;2013年06期
5 章謙驊;包建榮;;基于原模圖的AR4JA碼的優(yōu)化設(shè)計[J];杭州電子科技大學學報;2014年01期
6 李忠亮;夏國江;;原模圖LDPC碼的準循環(huán)擴展和編碼算法[J];空間科學學報;2011年03期
7 方毅;王琳;陳平平;肖e，
本文編號：2431636
本文鏈接：http://www.wukwdryxk.cn/kejilunwen/xinxigongchenglunwen/2431636.html
最近更新
教材專著
