| 一种基于递归MSK的LDPC码设计准则 |
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| 引用本文： | 黄建忠,寇倩,童胜,王新梅.一种基于递归MSK的LDPC码设计准则[J].电子与信息学报,2007,29(5):1119-1123. |
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| 作者姓名： | 黄建忠 寇倩 童胜 王新梅 |
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| 作者单位： | 西安电子科技大学ISN国家重点实验室,西安,710071;西安电子科技大学ISN国家重点实验室,西安,710071;西安电子科技大学ISN国家重点实验室,西安,710071;西安电子科技大学ISN国家重点实验室,西安,710071 |
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| 摘 要： | 本文首先给出了基于MSK的LDPC码串行级联系统的模型，叙述了MSK的两种实现结构，分析了基于递归连续相位编码器(RCPE)MSK中的错误相关性和级联Tanner图中的环特性；最后，提出了一种LDPC码设计准则，在该准则下，基于递归MSK的LDPC码串行级联系统可以不采用交织器。仿真性能表明这种设计准则可以减小递归MSK中的错误相关性对性能的影响。
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| 关 键 词： | 低密度奇偶校验码 最小频移键控 错误相关性 Tanner图 |
| 文章编号： | 1009-5896（2007）05-1119-05 |
| 收稿时间： | 2005-09-03 |
| 修稿时间： | 2006-05-08 |
A New Design Rule of LDPC Codes for Recursive MSK |
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| Huang Jian-zhong,Kou Qian,Tong Sheng,Wang Xin-mei.A New Design Rule of LDPC Codes for Recursive MSK[J].Journal of Electronics & Information Technology,2007,29(5):1119-1123. |
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| Authors: | Huang Jian-zhong Kou Qian Tong Sheng Wang Xin-mei |
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| Affiliation: | National Key Lab of Integrated Service Networks, Xidian University, Xi’an 710071, China |
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| Abstract: | This paper investigates a serial concatenation of Low-Density Parity-Check (LDPC) codes with Minimum Shift Keying (MSK) when the receiver employs iterative decoding and demodulation. First, the RCPE and NRCPE modes of the MSK modulator are described, then the error correlation in the Recursive CPE (RCPE) MSK demodulator and the overall loop in the joint Tanner graph are analyzed. Finally a new design rule is developed which allows the serially concatenated system not to employ interleavers. Simulation results show that the proposed design rule reduces the impact of the error correlation in a simple and effective way. |
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| Keywords: | Low-Density Parity-Check (LDPC) Minimum Shift Keying (MSK) Error correlation Tanner graph |
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