VLSI architecture of the soft-output sphere decoder for MIMO systems

Zhan Guo, Peter Nilsson

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

Sphere decoders can approach the performance of maximum-likelihood (ML) decoders for MIMO systems with lower complexity. In this paper, VLSI architecture of the modified K-best Schnorr-Euchner (MKSE) sphere decoder is proposed for soft-output MIMO decoding. The MKSE decoder can achieve near-ML performance with higher decoding throughput and lower computational complexity. The proposed VLSI architecture is implemented for a 4 /spl times/ 4 16-QAM MIMO system in a 0.13-/spl mu/m CMOS technology. The implemented soft-output MKSE chip can achieve a decoding throughput of more than 100 Mb/s with a 0.56 mm/sup 2/ core area and 97 K gates.
Original languageEnglish
Title of host publication48th Midwest Symposium on Circuits and Systems, 2005.
Pages1195-1198
Volume2
DOIs
Publication statusPublished - 2005
Event48th IEEE International Midwest Symposium on Circuits and Systems MWSCAS - Cincinnati, Ohio, United States
Duration: 2005 Oct 72005 Oct 10

Publication series

Name
Volume2

Conference

Conference48th IEEE International Midwest Symposium on Circuits and Systems MWSCAS
Country/TerritoryUnited States
CityCincinnati, Ohio
Period2005/10/072005/10/10

Subject classification (UKÄ)

  • Electrical Engineering, Electronic Engineering, Information Engineering

Free keywords

  • quadrature amplitude modulation
  • maximum likelihood decoding
  • MIMO systems
  • VLSI

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