| 一种新的信噪比自适应的球形译码算法 |
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| 引用本文： | 林云,乔鹏鹏. 一种新的信噪比自适应的球形译码算法[J]. 电视技术, 2012, 36(15): 71-74,103 |
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| 作者姓名： | 林云 乔鹏鹏 |
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| 作者单位： | 重庆邮电大学通信与信息工程学院,重庆邮电大学通信与信息工程学院 |
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| 摘 要： | 针对多输入多输出(MIMO)无线通信系统中基于球形译码算法(Sphere Decoding Algorithm,SDA)在低信噪比区域较高的复杂度,提出一种半定松弛算法和有限星座SDA相结合的信噪比自适应的SDA。通过仿真得知,所提出的算法与已有的SDA相比,在低信噪比区域有较低的算法复杂度,并且误比特性能逼近于最优的SDA。
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| 关 键 词： | 多输入多数出 半定松弛 球形译码 有限星座 |
| 收稿时间： | 2012-01-03 |
| 修稿时间： | 2012-02-12 |
A New SNR Adaptive Sphere Decoding Algorithm |
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| LIN Yun and Qiao Pengpeng. A New SNR Adaptive Sphere Decoding Algorithm[J]. Ideo Engineering, 2012, 36(15): 71-74,103 |
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| Authors: | LIN Yun and Qiao Pengpeng |
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| Affiliation: | College of Communication and Information Engineering in Chongqing University of Posts and Telecommunications,College of Communication and Information Engineering in Chongqing University of Posts and Telecommunications |
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| Abstract: | In view of multiple-input multiple-output (MIMO) wireless communication systems, sphere decoding algorithm in low SNR region is in possession of the higher complexity. An SNR adaptive limited constellation sphere decoding algorithm is presented, which combines with semi-definite relaxation. Simulation results show that the proposed algorithm can reduce the complexity of the algorithm significantly at low signal to noise ratio area compared with the existed SDA, and the BER performance largely close to optimal SDA. |
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| Keywords: | MIMO semi-definite relaxation sphere decoding limited constellation |
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