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Space-time-frequency (STF) coding for MIMO-OFDM systems

Molisch, Andreas LU ; Win, M Z and Winters, J H (2002) In IEEE Communications Letters 6(9). p.370-372
Abstract
We consider the capacity of multiple-input-multiple-output (MIMO) systems that use OFDM as the modulation format. We point out a basic equivalence between antennas and OFDM-tones. This similarity immediately allows us to essentially reuse all space-time codes designed for flat-fading channels in MIMO-OFDM systems operating in frequency-selective channels. An optimum code would thus code across all antennas and tones (as well as time) simultaneously. Since this can become very complex, we propose a method for grouping antennas and codes in such a way that the inherent diversity is retained, while the complexity is greatly reduced. Capacity computations between the full-complexity and the reduced-complexity systems illustrate this tradeoff.
Please use this url to cite or link to this publication:
author
; and
publishing date
type
Contribution to journal
publication status
published
subject
in
IEEE Communications Letters
volume
6
issue
9
pages
370 - 372
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:0036748657
ISSN
1089-7798
DOI
10.1109/LCOMM.2002.802047
language
English
LU publication?
no
id
364be38f-72d4-4beb-bf56-de2ada9b1f75 (old id 600978)
date added to LUP
2016-04-01 15:57:20
date last changed
2025-10-14 10:14:07
@article{364be38f-72d4-4beb-bf56-de2ada9b1f75,
  abstract     = {{We consider the capacity of multiple-input-multiple-output (MIMO) systems that use OFDM as the modulation format. We point out a basic equivalence between antennas and OFDM-tones. This similarity immediately allows us to essentially reuse all space-time codes designed for flat-fading channels in MIMO-OFDM systems operating in frequency-selective channels. An optimum code would thus code across all antennas and tones (as well as time) simultaneously. Since this can become very complex, we propose a method for grouping antennas and codes in such a way that the inherent diversity is retained, while the complexity is greatly reduced. Capacity computations between the full-complexity and the reduced-complexity systems illustrate this tradeoff.}},
  author       = {{Molisch, Andreas and Win, M Z and Winters, J H}},
  issn         = {{1089-7798}},
  language     = {{eng}},
  number       = {{9}},
  pages        = {{370--372}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  series       = {{IEEE Communications Letters}},
  title        = {{Space-time-frequency (STF) coding for MIMO-OFDM systems}},
  url          = {{http://dx.doi.org/10.1109/LCOMM.2002.802047}},
  doi          = {{10.1109/LCOMM.2002.802047}},
  volume       = {{6}},
  year         = {{2002}},
}