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Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networks (2003)
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| Venue: | IEEE TRANS. INF. THEORY |
| Citations: | 620 - 5 self |
BibTeX
@ARTICLE{Laneman03distributedspace-time-coded,
author = {J. Nicholas Laneman and Gregory W. Wornell},
title = {Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networks},
journal = {IEEE TRANS. INF. THEORY},
year = {2003},
volume = {49},
pages = {2415--2425}
}
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Abstract
We develop and analyze space–time coded cooperative diversity protocols for combating multipath fading across multiple protocol layers in a wireless network. The protocols exploit spatial diversity available among a collection of distributed terminals that relay messages for one another in such a manner that the destination terminal can average the fading, even though it is unknown a priori which terminals will be involved. In particular, a source initiates transmission to its destination, and many relays potentially receive the transmission. Those terminals that can fully decode the transmission utilize a space-time code to cooperatively relay to the destination. We demonstrate that these protocols achieve full spatial diversity in the number of cooperating terminals, not just the number of decoding relays, and can be used effectively for higher spectral efficiencies than repetition-based schemes. We discuss issues related to space–time code design for these protocols, emphasizing codes that readily allow for appealing distributed versions.
Keyphrases
wireless network cooperative diversity space-time-coded protocol user cooperation full spatial diversity cooperative diversity protocol space-time code outage probability multiple protocol layer many relay destination terminal index term diversity technique relay channel space time code design spatial diversity spectral efficiency repetition-based scheme distributed version space time multipath fading distributed terminal
