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In this paper, we investigate the performance of a wireless relay network with each of its nodes equipped with N antennas and the same orthogonal space-time block coding (OSTBC) scheme adopted at its destination and relays for transmission. By deriving the performance expressions for a single-relay system, we obtain the maximum diversity order achievable by the channel-state information (CSI)-assisted amplify-and-forward (CAF) protocol. Then, by focusing on CAF multirelay systems subject to a total power constraint, we derive a simple approximate symbol error rate (SER) expression for the multiple-relay channels with and without relay selection revealing a higher achievable diversity order by using relay selection than its counterpart with fixed relay configuration.
Published in:
Vehicular Technology, IEEE Transactions on
(Volume:59
,
Issue:
7
)
Date of Publication: Sept. 2010
- Page(s):
- 3668 - 3674
- ISSN :
- 0018-9545
- INSPEC Accession Number:
- 11523629
- Digital Object Identifier :
- 10.1109/TVT.2010.2057267
- Product Type:
- Journals & Magazines
- Date of Publication :
- 26 July 2010
- Date of Current Version :
- 13 September 2010
- Issue Date :
- Sept. 2010
- Sponsored by :
- IEEE Vehicular Technology Society
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