The proposed method introduces the LDPC coding gain into the decision feedback loop, which improves the convergence. And it achieves the asymptotic performance of non鄄blind channel estimation and equalization methods under the condition of few pilot symbols inserted. Meanwhile, an improved channel ...
coding performanceLow-Density Parity-Check (LDPC) codes have received great attention in last decade owing to their capacity-approaching performance. The well-known sum-product algorithm (SPA) achieves very good coding gain but it is too complex for hardware implementation. To solve this problem, ...
(LDPC) codes is obviousl y better than that of binary LDPC codes with the same bit length,but nonbinary LDPC codes have relatively high im plementation complexity.In order to reduce the implementation complexity of nonbinary LDPC codes and improv e the coding gain of the system,this paper ...
在给定的误码率下,编码方案与未编码方案均对应一个所需的信噪比, 而这两者之间的差值翻译了使用这种编码方案所带来的性能改善程度,我们称之 为编码增益(coding gain)。另一方面,在给定的误码率下编码方案所需的信噪比和 Shannon 限之间的差值则反映了改进编码方案所能带来的最大增益。 0 10 BCH(63,45) 未编码...
Military satellite communication is required to fulfill the need of real鄄time information transmission, high transmission rate, large communication capacity and adaptability to the time鄄varying characteristics of inter鄄satellite links, so the channel coding schemes with high coding gain and high throughp...
codinggain,low-densityparity—checkcodeswithshortblocklength,girthcondition低密度奇偶校验码(1ow.densityparity—check,LDPC)早在1963年就己提出_1J,但受当时计算机计算速度的限制没有引起关注,直到1996年才重新得到学者们的重视.文献『2.31根据图的扩展方法设计LDPC码,使其在编码、解码方面都具有线性时间复杂度且表现...
(2,1,7)convolutionalcodesOVertheAWGNchanne1.Theresultindicatesthatatabiterrorrateof10一,LDPCcodescanoffermorethan1.5dBgaincomparedwiththeconvolutionalcodes.Keywords:LDPC;Coding;Decoding;DSP;Optimize;Implementation一、引言LDPC(LowDensityParityCheck)码是一种性能很出色的线性分组纠错码,在用非常稀疏的校验矩阵与...
The experimental results show that compared with the conventional LDPC coding scheme in DISCOVER, the PSNR gain for our proposed coding scheme can reach up to 0.6db. 展开 关键词: DVC motion area WIPC LDPC DOI: 10.1109/ICBNMT.2011.6155993 ...
PPM调制的深空光通信系统性能分析 PerformanceanalysisofLDPCcodedpulsepositionmodulation fordeep-spaceopticalcommunications GUOJian-zhong,TANYing,AIYong (SchoolofElectron...
(63,5 6)code recommended by the current CCSDS TC standard,4 dB to 6 dB cod﹣ing gain can be obtained for LDPC codes when the word error rate is 10-5.For the large volume commands,this paper refers to the LDPC (81 60,7 1 36)coding scheme recommended by the CCS﹣DS telemetry (TM...