| 引用本文: | 方兴,陈书明.基于ONPC体系结构的软输出球形解码器的VLSI实现.[J].国防科技大学学报,2008,30(6):63-67.[点击复制] |
| FANG Xing,CHEN Shuming.VLSI Implementation of Soft-output Sphere Detector Based on ONPC Architecture[J].Journal of National University of Defense Technology,2008,30(6):63-67[点击复制] |
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| 基于ONPC体系结构的软输出球形解码器的VLSI实现 |
| 方兴, 陈书明 |
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(国防科技大学 计算机学院，湖南 长沙 410073)
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| 摘要: |
| 由于球形检测算法的高计算复杂度，能提供软输出信息给后续纠错解码器的球形解码器的VLSI实现是一项挑战。提出了一种基于ONPC体系结构的深度优先搜索的软输出球形解码器的VLSI解决方案。对于采用4×4天线配置和64-QAM调制的MIMO系统，在17.7dB的信噪比下，所提出解决方案在0.13-μm CMOS工艺下能提供14Mbps的吞吐率，面积开销约为4.1mm2，并且BER性能优于幸存路径数为256的基于宽度优先搜索的K-best算法。 |
| 关键词: 多输入多输出 球形解码 空分复用 VLSI |
| DOI： |
| 投稿日期：2008-07-04 |
| 基金项目:国家“863”计划资助项目(2007AA01Z108) |
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| VLSI Implementation of Soft-output Sphere Detector Based on ONPC Architecture |
| FANG Xing, CHEN Shuming |
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(College of Computer, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| The efficient high-speed VLSI implementations of sphere detector providing soft information for a subsequent error correcting decoder are not trivial due to their high computational complexity. Therefore, a VLSI solution for soft-output sphere detector based on depth-first tree search and ONPC architecture is presented. In a 0.13-μm CMOS process, the proposed detector solution can achieve 14 Mbps at a signal-to-noise ration of 17.7dB for 4×4 MIMO system with 64-QAM using only approximately 4.1mm2, and realize a better BER performance than K-best algorithm with 256 survivor paths based on depth-first search. |
| Keywords: multiple-input multiple-output (MIMO) sphere detector spatial multiplexing VLSI |
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