Preamble-based channel estimation in MIMO-OFDM/OQAM systems

Eleftherios Kofidis, Dimitrios Katselis

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

Abstract

Filter bank-based multicarrier modulation (FBMC) using offset quadrature amplitude modulation (OQAM), known as OFDM/OQAM (or FBMC/OQAM), provides an attractive alternative to the conventional cyclic prefix-based orthogonal frequency division multiplexing (CP-OFDM), especially in terms of increased robustness to frequency offset and Doppler spread, and high bandwidth efficiency. It suffers, however, from an inherent (intrinsic) imaginary inter-carrier/inter-symbol interference that complicates signal processing tasks such as channel estimation (CE). Recently, the so-called interference approximation method (IAM) was proposed for preamble-based CE in single-input single-output (SISO) systems. It relies on the knowledge of the pilot's neighborhood to approximate this interference and constructively exploit it in simplifying CE and improving its performance. A number of IAM preambles have been proposed, with varying CE performance. This paper is concerned with the application of the IAM idea in multi-input multi-output (MIMO) systems. The most prominent IAM variants are considered and their MIMO extensions with their relative advantages and practical issues are investigated. The IAM preambles are compared, with each other and with CP-OFDM, via simulations in both mildly and highly frequency-selective channels.

Original languageEnglish (US)
Title of host publication2011 IEEE International Conference on Signal and Image Processing Applications, ICSIPA 2011
Pages579-584
Number of pages6
DOIs
StatePublished - Dec 1 2011
Externally publishedYes
Event2011 2nd IEEE International Conference on Signal and Image Processing Applications, ICSIPA 2011 - Kuala Lumpur, Malaysia
Duration: Nov 16 2011Nov 18 2011

Publication series

Name2011 IEEE International Conference on Signal and Image Processing Applications, ICSIPA 2011

Conference

Conference2011 2nd IEEE International Conference on Signal and Image Processing Applications, ICSIPA 2011
CountryMalaysia
CityKuala Lumpur
Period11/16/1111/18/11

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Signal Processing

Fingerprint Dive into the research topics of 'Preamble-based channel estimation in MIMO-OFDM/OQAM systems'. Together they form a unique fingerprint.

  • Cite this

    Kofidis, E., & Katselis, D. (2011). Preamble-based channel estimation in MIMO-OFDM/OQAM systems. In 2011 IEEE International Conference on Signal and Image Processing Applications, ICSIPA 2011 (pp. 579-584). [6144161] (2011 IEEE International Conference on Signal and Image Processing Applications, ICSIPA 2011). https://doi.org/10.1109/ICSIPA.2011.6144161