High speed look-ahead LMS detector for MIMO systems

Wen Chih Kan, Gerald E. Sobelman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Adaptive MIMO detection is used when knowledge of the channel is unavailable. We propose an efficient look-ahead LMS algorithm for MIMO systems which has no noticeable performance loss compared to the standard LMS procedure. In particular, the additional logic introduced into the feedback path can be retimed to reduce the critical path delay. We illustrate this by implementing both the retimed look-ahead LMS and standard LMS on a Xilinx Virtex 4 FPGA. Our synthesis results show that the new design can operate at 173 MHz, compared to 135 MHz for standard LMS.

Original languageEnglish (US)
Title of host publication2007 IEEE Workshop on Signal Processing Systems, SiPS 2007, Proceedings
Pages56-60
Number of pages5
DOIs
StatePublished - Dec 1 2007
Event2007 IEEE Workshop on Signal Processing Systems, SiPS 2007 - Shanghai, China
Duration: Oct 17 2007Oct 19 2007

Publication series

NameIEEE Workshop on Signal Processing Systems, SiPS: Design and Implementation
ISSN (Print)1520-6130

Other

Other2007 IEEE Workshop on Signal Processing Systems, SiPS 2007
CountryChina
CityShanghai
Period10/17/0710/19/07

Keywords

  • LMS
  • Look-ahead
  • MIMO
  • Retiming

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