| 基于QC-LDPC码的MIMO-OFDM系统的性能仿真 |
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| 引用本文： | 林伟琼,王琳. 基于QC-LDPC码的MIMO-OFDM系统的性能仿真[J]. 现代电子技术, 2007, 30(11): 33-34,38 |
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| 作者姓名： | 林伟琼 王琳 |
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| 作者单位： | 厦门大学,福建,厦门,361005 |
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| 摘 要： | QC-LDPC码是一个十分重要的LDPC码研究分支。QC-LDPC码(准循环低密度奇偶校验码)是一类结构化的LDPC码,其校验矩阵H采用准循环方式构造,具有实现复杂度低的特点,易于硬件实现。大量研究人员认为,MIMO-OFDM技术将会成为4G的核心技术。将QC-LDPC码与MIMO-OFDM系统相结合,分析了在时变频率选择性衰落信道下的系统性能。仿真结果表明,在时变频率选择性衰弱信道下,QC-LDPC码与随机构造的LDPC码具有接近的系统性能。
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| 关 键 词： | MIMO-OFDM LDPC QC-LDPC LS STBC |
| 文章编号： | 1004-373X（2007）11-033-02 |
| 收稿时间： | 2007-03-15 |
| 修稿时间： | 2007-03-15 |
The Performance Simulation of MIMO - OFDM System Based on QC - LDPC |
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| LIN Weiqiong,WANG Lin. The Performance Simulation of MIMO - OFDM System Based on QC - LDPC[J]. Modern Electronic Technique, 2007, 30(11): 33-34,38 |
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| Authors: | LIN Weiqiong WANG Lin |
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| Affiliation: | Xiamen University,Xiamen,381005 ,China |
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| Abstract: | Quasi Cyclic Low Density Parity Check(QC-LDPC) code ia an important branch of LDPC code research.It is a kind of constructed LDPC codes ,which check matrix H is constructed by quasi cyclic method.MIMO-OFDM is being pursued as a potential candidate for 4G mobile wireless system.In this paper,QC-LDPCcodes are combined with the MIMO-OFDM system.Simulations show that QC-LDPC code has as good error correction performance as random LDPC code and other good QC-LDPC code on frequency selective channels. |
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| Keywords: | MIMO-OFDM LDPC QC-LDPC LS STBC |
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