| 星型16QAM调制LDPC-BICM-ID系统的星座映射设计 |
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| 引用本文： | 黄天聪,王 炜,徐 琳,吴玉成. 星型16QAM调制LDPC-BICM-ID系统的星座映射设计[J]. 计算机应用研究, 2012, 29(11): 4273-4275 |
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| 作者姓名： | 黄天聪 王 炜 徐 琳 吴玉成 |
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| 作者单位： | 重庆大学 通信工程学院,重庆,400044 |
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| 基金项目： | 国家自然科学基金资助项目（60872038） |
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| 摘 要： | 针对比特交织编码调制—迭代检测系统中应用星型16进制正交幅度(16QAM)调制不存在Gray映射的问题,结合欧氏平方重量最大化原则和最小判决区域最大化原则,提出一种适合于此系统星座映射的新规则,设计新规则下的星型16QAM星座映射图,通过分析和计算机仿真,比较了各种星型16QAM星座映射性能。仿真结果表明,根据新规则设计的星型16QAM星座映射好于其他星座映射,在误码率达到10-6时,使用设计的映射方式使得系统性能有2.2 dB的增益。
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| 关 键 词： | 通信技术 低密度奇偶校验编码 正交幅度调制 比特交织编码调制 星座映射 |
Design of labeling map methods for bit-interleaved LDPC-codedstar 16QAM-modulation system |
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| HUANG Tian-cong,WANG Wei,XU Lin,WU Yu-cheng. Design of labeling map methods for bit-interleaved LDPC-codedstar 16QAM-modulation system[J]. Application Research of Computers, 2012, 29(11): 4273-4275 |
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| Authors: | HUANG Tian-cong WANG Wei XU Lin WU Yu-cheng |
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| Affiliation: | College of Communication Engineering, Chongqing University, Chongqing 400044, China |
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| Abstract: | Labeling map is crucial for bit-interleaved coded modulation with iterative decodingBICM-ID system. Star-16QAM modulation was used widely in mobile communication system, and it had no existence of Gray mapping. In order to maximize the Euclidean square and minimum decision region for bit-interleaved LDPC-coded star-16QAM modulation with itera-tively decoding system, this paper proposed a new signal labeling designed criterion. It designed a new star-16QAM signal labeling based on the proposed method. It compared with different labelings through analysis and computer simulation. Simulation results show that based on the new designed signal labeling, the system achieves a gain of approximately 2. 2 dB in comparison to others at a bit ratio of 10-6. |
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| Keywords: | communication technology low density parity check code （LDPC） quadrature amplitude modulation（QAM） bit-interleaved coded modulation（BICM） signal labeling |
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