| 基于LDPC码与星座旋转准正交STBC的级联编译码方法 |
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| 引用本文： | 肖海微,汪洋,张继良,张钦宇. 基于LDPC码与星座旋转准正交STBC的级联编译码方法[J]. 系统工程与电子技术, 2011, 33(9): 2122-2125. DOI: 10.3969/j.issn.1001-506X.2011.09.38 |
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| 作者姓名： | 肖海微 汪洋 张继良 张钦宇 |
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| 作者单位： | 1. 哈尔滨工业大学深圳研究生院, 广东 深圳 518055 2. 哈尔滨工业大学电子与信息工程学院, 黑龙江 哈尔滨 150001 |
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| 基金项目： | 国家高技术研究发展计划(863计划)(2009AA011502); 广东省自然科学基金(9151805707000011); 深圳市科技计划项目(JC200903120174A)资助课题 |
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| 摘 要： | 在4×4多输入多输出(multiple input multiple output, MIMO)系统中,为了同时达到全分集增益和全速率数据传输,进而达到降低系统误码率及提高系统可靠性的要求,提出将低密度奇偶校验(low density parity check, LDPC)码与基于星座旋转的准正交空时分组码级联的编码方案,并找出了在全数据传输速率的前提下能够获得满分集增益的最优旋转角度。仿真结果表明,该级联编码方案误码率低于传统的LDPC编码与空时分组码级联的编码方案,在误码率为10-5的情况下,比LDPC码与正交空时分组码级联的编码方案有8 dB左右的增益。
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| 关 键 词： | 多输入多输出 时空分组编码 低密度奇偶校验码 级联 |
Concatenated coding based on LDPC codes and super quasi-orthogonal STBC |
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| XIAO Hai-wei,WANG Yang,ZHANG Ji-liang,ZHANG Qin-yu. Concatenated coding based on LDPC codes and super quasi-orthogonal STBC[J]. System Engineering and Electronics, 2011, 33(9): 2122-2125. DOI: 10.3969/j.issn.1001-506X.2011.09.38 |
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| Authors: | XIAO Hai-wei WANG Yang ZHANG Ji-liang ZHANG Qin-yu |
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| Affiliation: | 1. Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, China;2. School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | In a 4×4 multiple input multiple output (MIMO) system, in order to achieve full diversity and full data rate transmission so as to reduce the bit error rate of the system and improve the reliability of the system, a scheme concatenating low density parity check (LDPC) codes and space time block codes (STBC) based on constellation rotation is put forward. At the same time, the optimum rotation angle is given. Simulation shows that the performance of this scheme is better than that of traditional schemes. When bit error ratio (BER) is 10-5, it has about 8 dB gain compared with the concatenated coding scheme of LDPC codes and orthogonal space time block codes. |
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| Keywords: | multiple input multiple output(MIMO) space time block coding(STBC) low density parity-check(LDPC) code concatenation |
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