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	面向中国DTTB标准的多码率LDPC译码器
	彭克武 ; 牛迪民 ; 宋健 ; 杨知行 ; PENG Kewu ; NIU Dimin ; SONG Jian ; YANG Zhixing
	2010-06-09 ; 2010-06-09
关键词	QC-LDPC DTTB 多码率译码器 QC-LDPC DTTB multi-rate decoder TN911.22
其他题名	Multi-rate LDPC decoder for the Chinese DTTB standard
中文摘要	为了简化中国数字电视地面广播(DTTB)标准的信道解码,提出了一种三码率合一的准循环低密度奇偶校验(QC-LDPC)译码器,充分利用了中国DTTB标准中3种码率QC-LDPC码的结构和参数特点。该译码器采用简化的译码流程、新颖的多码率复用模式和半并行的译码结构,已成功应用于符合中国DTTB标准的接收机芯片设计。性能仿真和测试结果表明,该译码器在加性白色高斯噪声(AWGN)信道下的误码性能与单码率译码器误码性能相当。硬件实现结果表明,该译码器的资源利用率远远超过了传统的单码率译码器。仿真和实现结果证明,该文提出的高效译码器结构适用于各种QC-LDPC译码器的简化设计。; A three-rate quasi-cyclic LDPC decoder was developed for channel decoding for the Chinese Digital Television Terrestrial Broadcasting(DTTB) standard.The decoder fully exploits the quasi-cyclic property and similarities among the three single-rate LDPC codes.The decoder,which incorporates simplified decoding steps,efficiently reuses storage space and functional units in a semi-parallel structure.The decoder has been successfully deployed in a receiver-chip design for the Chinese DTTB standard.Performance simulations show that there is no difference in the decoding performance between multi-rate and single-rate decoders in terms of bit error rate for various signal to noise ratios over AWGN channels.Hardware implementation results show that the resource efficiency of the multi-rate decoder is much better than that of traditional single-rate decoders.Thus high-efficient LDPC decoder simplifies the multi-rate QC-LDPC decoder,as demonstrated by simulations and implementation results.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/53460]
专题	清华大学
推荐引用方式 GB/T 7714	彭克武,牛迪民,宋健,等. 面向中国DTTB标准的多码率LDPC译码器[J],2010, 2010.
APA	彭克武.,牛迪民.,宋健.,杨知行.,PENG Kewu.,...&YANG Zhixing.(2010).面向中国DTTB标准的多码率LDPC译码器..
MLA	彭克武,et al."面向中国DTTB标准的多码率LDPC译码器".(2010).

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