Relaxed tree search MIMO signal detection algorithm design and VLSI implementation

Abstract— This paper presents an implementation-oriented breadthfirst tree search MIMO detector design solution. Techniques at algorithm and VLSI architecture levels are developed to improve the implementation efficiency. Using Synopsys synthesis tool with 0.18µm CMOS technology, we designed soft-output detectors for 4×4 MIMO channel with 64-QAM modulation, which can achieve close to 30 Mbps throughput. To the best of our knowledge, the presented detectors are the first one reported in the open literature capable of supporting tree search soft-output MIMO detection for 4×4 MIMO transmission with 64-QAM modulation.

• Type: Conference
• Year: 2006
• Where: ISCAS
• Authors: Sizhong Chen, Tong Zhang, M. Goel
• Keywords: ISCAS 2006, MIMO, Search Soft-output Mimo, Tree Search Mimo