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

A VLSI Architecture of the Soft-Output Schnorr-Euchner Decoder for MIMO System
Publiceringsår: 2005
Språk: Engelska
Sidor: 1195-1198
Publikation/Tidskrift/Serie: 48th Midwest Symposium on Circuits and Systems, 2005.
Volym: 2
Dokumenttyp: Konferensbidrag


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.



  • Technology and Engineering
  • quadrature amplitude modulation
  • maximum likelihood decoding
  • MIMO systems
  • VLSI


48th IEEE International Midwest Symposium on Circuits and Systems MWSCAS
Cincinnati, Ohio, USA
  • Elektronikkonstruktion
  • ISBN: 0-7803-9197-7

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