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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.
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author
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
2007-11-23 09:35:31
date last changed
2017-09-03 04:31:32
@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},
  volume       = {6},
  year         = {2002},
}