Joint blind and semi-blind detection and channel estimation for space-time trellis coded systems

RJ Piechocki, C Andrieu, AR Nix, JP McGeehan

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Abstract

The paper considers a multiple-input multiple-output (MIMO) communication system, which uses space-time trellis coding (STTC). A novel method of decoding STTC without a need to transmit training sequences is developed. The technique uses only a single channel estimate to acquire a complete set of the channels' estimates while performing STTC detection. The method is akin to blind trellis search techniques (per-survivor processing - PSP) and adaptive Viterbi. Our solution consists of the deployment of a bank of Kalman filters. The bank of Kalman filters is coupled with Viterbi type decoders, which produce tentative decisions based on Kalman channel predictions. In return, the Kalman filters use the tentative decisions to update and track the MIMO channels corresponding to a number of tracked hypotheses. The proposed technique is particularly applicable to space-time systems operating in rapidly fading environments, where STTC can be decoded and MIMO channels efficiently tracked without relying on periodic pilot sequences.
Translated title of the contributionJoint blind and semi-blind detection and channel estimation for space-time trellis coded systems
Original languageEnglish
Pages (from-to)349 - 352
Number of pages4
JournalIEEE International Conference on Acoustics, Speech, and Signal Processing, 2003 (ICASSP '03)
Volume4
Publication statusPublished - Apr 2003
Event2003 IEEE International Conference on Acoustics, Speech, and Signal Processing - Hong Kong Exhibition and Convention Centre , Hong Kong, China
Duration: 6 Apr 200310 Apr 2003

Bibliographical note

Publisher: Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Name and Venue of Conference: IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003 (ICASSP '03), Hong Kong
Rose publication type: Conference contribution

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Keywords

  • Viterbi decoding
  • space-time codes

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