Channel estimation in turbo-blast detectors using EM algorithm

Mohammad Ali Khalighi, Joseph Boutros

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

11 Citations (Scopus)

Abstract

We consider channel re-estimation based on EM (expectation maximization) algorithm in an iterative MIMO detector based on parallel interference cancellation, also known under the name of Turbo-BLAST. While providing an appropriate formulation of EM, we show that a primarily proposed EM implementation gives a biased estimate, and propose modifications in the EM implementation in order to obtain an unbiased estimate. Testing the proposed algorithms by simulations, we show that the achieved improvement is considerable for important diversity orders.

Original languageEnglish
Title of host publication2005 IEEE International Conference on Acoustics, Speech, and Signal Processing,ICASSP '05 - Proceedings - Audio and ElectroacousticsSignal Processing for Communication
PublisherInstitute of Electrical and Electronics Engineers Inc.
VolumeIII
ISBN (Print)0780388747, 9780780388741
DOIs
Publication statusPublished - 1 Jan 2005
Externally publishedYes
Event2005 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP '05 - Philadelphia, PA, United States
Duration: 18 Mar 200523 Mar 2005

Other

Other2005 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP '05
CountryUnited States
CityPhiladelphia, PA
Period18/3/0523/3/05

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ASJC Scopus subject areas

  • Software
  • Signal Processing
  • Electrical and Electronic Engineering

Cite this

Khalighi, M. A., & Boutros, J. (2005). Channel estimation in turbo-blast detectors using EM algorithm. In 2005 IEEE International Conference on Acoustics, Speech, and Signal Processing,ICASSP '05 - Proceedings - Audio and ElectroacousticsSignal Processing for Communication (Vol. III). [1415890] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICASSP.2005.1415890