Abstract
In this paper, we consider the optimal relay selection policy for decode-and-forward opportunistic relaying systems under the assumption that the channel gain of the source-destination link is good-enough to produce some improvement in the end-to-end performance over the relay channels. The optimal relay selection policy shows that the conventional relay selection policy that appeared in the literature is suboptimal. We derive the exact expression for the end-to-end outage probability over Rayleigh fading channels. In addition, we look into the asymptotic high signal-to-noise ratio (SNR) regime, and characterize the diversity order and coding gain. Our findings reveal that the new optimal relay selection policy outperforms the suboptimal relay selection policy via coding gain while both policies have the same diversity order. We provide simulation results to verify the validity of our theoretical analysis.
| Original language | English |
|---|---|
| Title of host publication | 2013 1st International Conference on Communications, Signal Processing and Their Applications, ICCSPA 2013 |
| DOIs | |
| Publication status | Published - 2013 |
| Event | 2013 1st International Conference on Communications, Signal Processing and Their Applications, ICCSPA 2013 - Sharjah, United Arab Emirates Duration: 12 Feb 2013 → 14 Feb 2013 |
Other
| Other | 2013 1st International Conference on Communications, Signal Processing and Their Applications, ICCSPA 2013 |
|---|---|
| Country | United Arab Emirates |
| City | Sharjah |
| Period | 12/2/13 → 14/2/13 |
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Keywords
- decode-and-forward
- Opportunistic relaying
- outage probability
- relay selection
ASJC Scopus subject areas
- Computer Networks and Communications
- Signal Processing
Cite this
Optimal relay selection for decode-and-forward opportunistic relaying. / Shaqfeh, Mohammad; Al-Qahtani, Fawaz; Alnuweiri, Hussein.
2013 1st International Conference on Communications, Signal Processing and Their Applications, ICCSPA 2013. 2013. 6487295.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Optimal relay selection for decode-and-forward opportunistic relaying
AU - Shaqfeh, Mohammad
AU - Al-Qahtani, Fawaz
AU - Alnuweiri, Hussein
PY - 2013
Y1 - 2013
N2 - In this paper, we consider the optimal relay selection policy for decode-and-forward opportunistic relaying systems under the assumption that the channel gain of the source-destination link is good-enough to produce some improvement in the end-to-end performance over the relay channels. The optimal relay selection policy shows that the conventional relay selection policy that appeared in the literature is suboptimal. We derive the exact expression for the end-to-end outage probability over Rayleigh fading channels. In addition, we look into the asymptotic high signal-to-noise ratio (SNR) regime, and characterize the diversity order and coding gain. Our findings reveal that the new optimal relay selection policy outperforms the suboptimal relay selection policy via coding gain while both policies have the same diversity order. We provide simulation results to verify the validity of our theoretical analysis.
AB - In this paper, we consider the optimal relay selection policy for decode-and-forward opportunistic relaying systems under the assumption that the channel gain of the source-destination link is good-enough to produce some improvement in the end-to-end performance over the relay channels. The optimal relay selection policy shows that the conventional relay selection policy that appeared in the literature is suboptimal. We derive the exact expression for the end-to-end outage probability over Rayleigh fading channels. In addition, we look into the asymptotic high signal-to-noise ratio (SNR) regime, and characterize the diversity order and coding gain. Our findings reveal that the new optimal relay selection policy outperforms the suboptimal relay selection policy via coding gain while both policies have the same diversity order. We provide simulation results to verify the validity of our theoretical analysis.
KW - decode-and-forward
KW - Opportunistic relaying
KW - outage probability
KW - relay selection
UR - http://www.scopus.com/inward/record.url?scp=84876067436&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84876067436&partnerID=8YFLogxK
U2 - 10.1109/ICCSPA.2013.6487295
DO - 10.1109/ICCSPA.2013.6487295
M3 - Conference contribution
SN - 9781467328210
BT - 2013 1st International Conference on Communications, Signal Processing and Their Applications, ICCSPA 2013
ER -