| 简化的固定复杂度球型译码算法 |
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| 引用本文： | 毛新宇,范伟亮,王志军.简化的固定复杂度球型译码算法[J].北京邮电大学学报,2015,38(4):15-18. |
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| 作者姓名： | 毛新宇 范伟亮 王志军 |
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| 作者单位： | 北京大学 信息科学技术学院, 北京 100871 |
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| 基金项目： | 国家高技术研究发展计划(863计划)项目(2014AA01A704)，国家自然科学基金项目(61471405) |
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| 摘 要： | 提出一种适用于多输入多输出通信系统的简化的固定复杂度球型译码算法.研究多天线接收信号的概率分布,根据接收信号满足卡方分布的特性,提出利用累计分布函数,结合检测错误上限,确定裁剪半径,将检测过程中大于该裁剪半径的节点裁剪掉.仿真结果表明,简化的固定复杂度球型译码算法在高信噪比的情况下,可以有效降低计算复杂度.
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| 关 键 词： | 多天线系统 固定复杂度 球型译码算法 裁剪半径 |
| 收稿时间： | 2008-01-01 |
A Simplified Fix-Complexity Sphere Decoding |
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| MAO Xin-yu,FAN Wei-liang,WANG Zhi-jun.A Simplified Fix-Complexity Sphere Decoding[J].Journal of Beijing University of Posts and Telecommunications,2015,38(4):15-18. |
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| Authors: | MAO Xin-yu FAN Wei-liang WANG Zhi-jun |
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| Affiliation: | School of Electronic Engineering and Computer Science, Peking University, Beijing 100871, China |
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| Abstract: | A further simply the calculation complexity of the fixed-complexity sphere decoding ( FSD ) was proposed for the multiple-input-multiple-output ( MIMO) system. By exploiting the channel noise probability distribution, a threshold determined by the upper bound of the symbol error ratio and cumula-tive distribution function of Chi-squared distribution can be set to cut nodes with larger metrics. Simula-tion results show that the proposed algorithm drops the complexity efficiently. |
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| Keywords: | multiple-input-multiple-output system fixed-complexity sphere decoding cut radius |
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