Reduced complexity equalization of MIMO systems with a fixed-lag smoothed M-BCJR algorithm

CM Vithanage, C Andrieu, RJ Piechocki

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

10 Citations (Scopus)
259 Downloads (Pure)

Abstract

M-BCJR algorithm is a reduced state version of the BCJR algorithm and selects a set of active states in the forward recursion based on an estimation of the filtered probability distribution of states at each time. We propose to use instead an estimation of the fixed-lag smoothed probability distribution of states with a non zero lag. Our implementation uses a Gaussian approximation to estimate these distributions with a low complexity, using the principle of probabilistic data association (PDA). The performance of the M-BCJR can be seen to be greatly improved as a result while remaining robust against changes in the channel multipath profile
Translated title of the contributionReduced complexity equalization of MIMO systems with a fixed-lag smoothed M-BCJR algorithm
Original languageEnglish
Title of host publicationWorkshop on Signal Processing Advances in Wireless Communications, New York, United States
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages136 - 140
ISBN (Print)0780388674
DOIs
Publication statusPublished - Jun 2005
Event6th Workshop on Signal Processing Advances in Wireless Communications - New York, United States
Duration: 1 Jun 2005 → …

Conference

Conference6th Workshop on Signal Processing Advances in Wireless Communications
CountryUnited States
CityNew York
Period1/06/05 → …

Bibliographical note

Conference Proceedings/Title of Journal: IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005
Rose publication type: Conference contribution

Sponsorship: The authors would like to thank Toshiba Research Europe Limited, Bristol, U.K. for financially supporting this work

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Keywords

  • BCJR algorithm
  • M algorithm
  • probabilistic data association
  • MIMO equalization

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    Vithanage, CM., Andrieu, C., & Piechocki, RJ. (2005). Reduced complexity equalization of MIMO systems with a fixed-lag smoothed M-BCJR algorithm. In Workshop on Signal Processing Advances in Wireless Communications, New York, United States (pp. 136 - 140). Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/SPAWC.2005.1505887