This Paper:Browse 3912 Download 2478 |
|
一种联合星座和伴随式信息的迭代译码算法 |
陈海强,王璐,黄小栗,罗灵山,梁奇,覃团发 |
|
(广西大学 计算机与电子信息学院,南宁 530004;广西高校多媒体通信与信息处理重点实验室(广西大学),
南宁 530004;广西多媒体通信与网络技术重点实验室培育基地(广西大学),南宁 530004) |
|
摘要: |
针对构造性的大数逻辑可译低密度奇偶校验(LDPC)码,联合信号星座和伴随式信息,提出一种基于可靠度的迭代大数逻辑译码算法。在校验节点,直接使用伴随式信息进行传递和处理;在变量节点,结合信源端的星座映射和伴随式进行译码信息收集和处理。理论分析和仿真实验结果表明,所提出的算法在保持优良译码性能的同时,具有更低的译码复杂度。 |
关键词: LDPC码 信号星座 伴随式信息 大数逻辑 迭代译码算法 |
DOI: |
|
基金项目:国家自然科学基金资助项目(61102090,61261023,61362010);广西自然科学基金资助项目(2012GXNSFAA053217,XBZ120739);广西大学基金资助项目(XBZ120739) |
|
An iterative decoding algorithm with constellation and syndrome message |
CHEN Haiqiang,WANG Lu,HUANG Xiaoli,LUO Lingshan,LIANG Qi,QIN Tuanfa |
() |
Abstract: |
For the constructed low density parity check(LDPC) codes, an iterative decoding algorithm is presented which is jointly designed with constellations and syndrome messages. At the check nodes,syndrome messages are directly processed and passed back to the variable nodes. At the variable nodes,constellations and syndrome messages are combined to calculate/process the decoding messages involved. Theoretical analysis and simulation results show that the presented algorithm can remain good decoding performance with lower decoding complexities. |
Key words: LDPC codes constellation syndrome message majority-logic iterative decoding algorithm |