Space-time-frequency (STF) coding for MIMO-OFDM systems
(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:
https://lup.lub.lu.se/record/600978
- author
- Molisch, Andreas LU ; Win, M Z and Winters, J H
- publishing date
- 2002
- 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
- 2022-01-28 08:17:00
@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}}, }