Channel estimation for precoded MIMO systems

A. Vosoughi, A. Scaglione

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

12 Scopus citations

Abstract

We consider a block fading frequency selective multi-input multi-output (MIMO) channel in additive white Gaussian noise (AWGN). The channel input is a training vector superimposed on a linearly precoded vector of Gaussian symbols. This form of precoding is referred to as affine precoding. We derive the channel Cramer-Rao bound (CRB) and we show that tr(CRB) can be lowered if we design the precoder and training such that the channel estimation through the training component is not affected by the precoded symbols. We propose a deterministic channel estimation algorithm which combines a second order blind estimator capitalized on the redundant precoding, with a standard linear estimator which exploits only training. The simulation results show a performance improvement over the least square (LS) which utilizes only training to obtain the channel estimate.

Original languageEnglish (US)
Title of host publicationProceedings of the 2003 IEEE Workshop on Statistical Signal Processing, SSP 2003
PublisherIEEE Computer Society
Pages442-445
Number of pages4
ISBN (Electronic)0780379977
DOIs
StatePublished - Jan 1 2003
Externally publishedYes
EventIEEE Workshop on Statistical Signal Processing, SSP 2003 - St. Louis, United States
Duration: Sep 28 2003Oct 1 2003

Publication series

NameIEEE Workshop on Statistical Signal Processing Proceedings
Volume2003-January

Other

OtherIEEE Workshop on Statistical Signal Processing, SSP 2003
CountryUnited States
CitySt. Louis
Period9/28/0310/1/03

Keywords

  • AWGN
  • Additive white noise
  • Channel estimation
  • Channel state information
  • Fading
  • Frequency domain analysis
  • Frequency estimation
  • Least squares approximation
  • MIMO
  • Stacking

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Applied Mathematics
  • Signal Processing
  • Computer Science Applications

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  • Cite this

    Vosoughi, A., & Scaglione, A. (2003). Channel estimation for precoded MIMO systems. In Proceedings of the 2003 IEEE Workshop on Statistical Signal Processing, SSP 2003 (pp. 442-445). [1289442] (IEEE Workshop on Statistical Signal Processing Proceedings; Vol. 2003-January). IEEE Computer Society. https://doi.org/10.1109/SSP.2003.1289442