(8176,7154)LDPCcodeofnearearthspaceapplicationintheCCSDSstandard.TheencodinganddecodingalgorithmprogramisdesignedandsimulatedonMATLAB.Simulationresultsshowthattheimprovedquantizationmethodneedslessiterationstocompletedecodingandimprovesthedecodingperformance.Byanalyzingthechangeofiterationtimesunderdifferentsignaltonoiseratio,...
关键词:CCSDS(空间数据系统咨询委员会);LDPC(低密度奇偶校验码);高效实现;交错结构;部分并行结构中图分类号:TN919.32文献标志码:A文章编号:1674-5620(2012)06-0041-06ImplementationofaHighPerformanceDesignofCCSDSDeepSpaceLDPCCodeLANTian(The10thResearchInstituteofChinaElectronicTechnologyGroupCorporation,Chengdu610036)...
基于CCSDS的LDPC算法实现管延斌1,罗宁2,简波3(1.西南交通大学四川省信息编码与传输重点实验室,成都610031;52.中国电子科技集团公司第十研究所信号处理重点实验室成都610031;3.西南交通大学信息科学与技术学院,成都610031)摘要:低密度奇偶校验码(LowDensityParityCheckCode,LDPCC)不仅具有逼近Shannon限的良好性能,而且译码...
- 1 - 中国科技论文在线 基于 CCSDS 的 LDPC 算法实现 管延斌1,罗宁2,简波33** 作者简介:管延斌,(1985-),男,硕士研究生,研究方向为无线通信与信道编码 通信联系人:罗宁,(1964-),男,高级工程师,主要研究方向为卫星通信、纠错编码等 (1. 西南交通大学四川省信息编码与传输重点实验室,成都 610031; 2. 中国...
The CCSDS AR4JA LDPC codes are well known for their outstanding error correction performance when compared to other LDPC-based standards. Even though the CCSDS standard is meant for satellite communication in the first place, the unique properties of the IP core makes it the ideal fit for furth...
展开更多 The decoding algorithm of LDPC codes is often implemented by integer quantization in FPGA,which leads to the degradation of decoding performance.The NMS decoding algorithm is introduced to reduce the error by multiplying an improved factor with a value range of(0,1)on t...MORE 作者 ...
文中是基于CCSDS提出的131.1-O-2标准,实现了码长为4096,码率为1/2、2/3、4/5的LDPC码的编码器设计。该编码器硬件实现复杂度低,通过软件仿真译码性能,与标准中给出的译码性能曲线进行对比,保证编码器编码优越性能。 LDPC码是一种有着稀疏校验矩阵的线性分组码,校验矩阵的稀疏性让LDPC码与其他线性分组码有着不...
The CCSDS LDPC codec supports code rate 223/255 with coded block size of 8160 bits, which allows for a simple replacement of legacy Reed-Solomon decoders. It was designed particularly for near-earth space missions, but the excellent error correction performance makes it the ideal fit for ...
简介 产品规格 产品描述 The CCSDS LDPC codec supports code rate 223/255 with coded block size of 8160 bits, which allows for a simple replacement of legacy Reed-Solomon decoders. It was designed particularly for near-earth space missions, but the excellent error correction performance makes it ...
LDPC Codes: Rate 1/2, 2/3, 4/5 (Left to Right) ...B-5 B-4 Performance of Length k=16384 LDPC Codes: Rate 1/2, 2/3, 4/5 (Left to Right) ...B-6 B-5 Performance of Length k=16384, k=4096, k=1024 AR4JA LDPC Codes: Rate 1/2 (Red), 2/3 (Green), 4/5 (Blue)...