| 面向中国DTTB标准的多码率LDPC译码器 |
| |
| 引用本文： | 彭克武,牛迪民,宋健,杨知行. 面向中国DTTB标准的多码率LDPC译码器[J]. 清华大学学报(自然科学版), 2009, 0(10): 1712-1716 |
| |
| 作者姓名： | 彭克武 牛迪民 宋健 杨知行 |
| |
| 作者单位： | 清华大学,清华信息科学与技术国家实验室,北京,100084;清华大学,电子工程系,北京,100084 |
| |
| 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,利用了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。仿真和测试结果表明,该译码器在加性白色G auss噪声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。该译码器结构适用于各种QC-LDPC译码器的简化设计。
|
| 关 键 词： | 数字电视地面广播(DTTB) 低密度奇偶校验(LDPC) 多码率译码器 |
Multi-rate LDPC decoder for the Chinese DTTB standard |
| |
| PENG Kewu,NIU Dimin,SONG Jian,YANG Zhixing. Multi-rate LDPC decoder for the Chinese DTTB standard[J]. Journal of Tsinghua University(Science and Technology), 2009, 0(10): 1712-1716 |
| |
| Authors: | PENG Kewu NIU Dimin SONG Jian YANG Zhixing |
| |
| Affiliation: | 1.Tsinghua National Laboratory for Information Science and Technology;Beijing 100084;China;2.Department of Eletronic Engineering;Tsinghua University;China |
| |
| Abstract: | 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 sim... |
| |
| Keywords: | |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
