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Content Provider | IEEE Xplore Digital Library |
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Author | Yanwu Ding Uysal, M. |
Copyright Year | 2009 |
Description | Author affiliation: Department of Electrical Engineering and Computer Science, Wichita State University, KS, 67260, USA (Yanwu Ding) || Department of Electrical and Computer Engineering, University of Waterloo, ON, Canada, N2L 3G1 (Uysal, M.) |
Abstract | In this paper, we investigate a cooperative system with multiple relays and amplify-and-forward relaying over frequency-selective channels. To extract the available rich multipath diversity, we employ orthogonal frequency division multiplexing (OFDM) with precoding. Through the derivation of pairwise error probability (PEP), we demonstrate that the maximum diversity order is given by the summation of the channel length in the direct link and the minimum of channel lengths in each relaying link which is further confirmed by simulation results. Based on the PEP expression, we also propose two relay selection strategies; one is on per-subcarrier basis and the other is on all-subcarriers basis. Our simulation results indicate that both strategies result in performance improvements. |
Starting Page | 614 |
Ending Page | 617 |
File Size | 134257 |
Page Count | 4 |
File Format | |
ISBN | 9781424426980 |
DOI | 10.1109/RWS.2009.4957426 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2009-01-18 |
Publisher Place | USA |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | OFDM Relays Protocols Pairwise error probability Intersymbol interference Frequency diversity Fading Bandwidth Diversity methods Signal to noise ratio relay selection Amplify-and-forward relaying pairwise error probability precoding |
Content Type | Text |
Resource Type | Article |
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