TY - GEN
T1 - Multi-relay cooperative OFDM with amplify-and-forward relaying invited paper
AU - Ding, Yanwu
AU - Uysal, Murat
PY - 2009
Y1 - 2009
N2 - 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 pair wise 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 PEPexpression, 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.
AB - 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 pair wise 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 PEPexpression, 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.
KW - Amplify-and-forward relaying
KW - OFDM
KW - Pairwise error probability
KW - Precoding
KW - Relay selection
UR - http://www.scopus.com/inward/record.url?scp=67650550712&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=67650550712&partnerID=8YFLogxK
U2 - 10.1109/RWS.2009.4957426
DO - 10.1109/RWS.2009.4957426
M3 - Conference contribution
AN - SCOPUS:67650550712
SN - 9781424426997
T3 - RWS 2009 IEEE Radio and Wireless Symposium, Proceedings
SP - 614
EP - 617
BT - RWS 2009 IEEE Radio and Wireless Symposium, Proceedings
T2 - 2009 IEEE Radio and Wireless Symposium, RWS 2009
Y2 - 18 January 2008 through 22 January 2008
ER -