TY - GEN
T1 - Outage probability analysis of multi-relay delay-limited hybrid-ARQ channels
AU - Maham, Behrouz
AU - Hjørungnes, Are
AU - Debbah, Mérouane
PY - 2010
Y1 - 2010
N2 - We consider a wireless relay network with with hybrid-automatic retransmission request (HARQ) and Rayleigh fading channels. In this paper, we analyze the outage probability of the multi-relay delay-limited HARQ system with opportunistic relaying scheme in decode-and-forward mode. A simple and distributed relay selection strategy is proposed for multi-relay HARQ channels. Then, we analyze the performance of the system. We first derive the cumulative density function (CDF) and probability density function (PDF) of the selected relay channels. Then, the CDF and PDF are used to determine the outage probability in the l-th round of HARQ. The packet delay constraint is represented by L, the maximum number of HARQ rounds. Furthermore, closed-form upper-bounds on outage probability are derived, which are used to investigate the diversity order of the system. Based on the derived upper-bound expressions, it is shown that the proposed schemes achieve the full spatial diversity order of N + 1, where N is the number of potential relays. Our analytical results are confirmed by simulation results.
AB - We consider a wireless relay network with with hybrid-automatic retransmission request (HARQ) and Rayleigh fading channels. In this paper, we analyze the outage probability of the multi-relay delay-limited HARQ system with opportunistic relaying scheme in decode-and-forward mode. A simple and distributed relay selection strategy is proposed for multi-relay HARQ channels. Then, we analyze the performance of the system. We first derive the cumulative density function (CDF) and probability density function (PDF) of the selected relay channels. Then, the CDF and PDF are used to determine the outage probability in the l-th round of HARQ. The packet delay constraint is represented by L, the maximum number of HARQ rounds. Furthermore, closed-form upper-bounds on outage probability are derived, which are used to investigate the diversity order of the system. Based on the derived upper-bound expressions, it is shown that the proposed schemes achieve the full spatial diversity order of N + 1, where N is the number of potential relays. Our analytical results are confirmed by simulation results.
UR - http://www.scopus.com/inward/record.url?scp=78649419620&partnerID=8YFLogxK
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U2 - 10.1109/VETECF.2010.5594138
DO - 10.1109/VETECF.2010.5594138
M3 - Conference contribution
AN - SCOPUS:78649419620
SN - 9781424435746
T3 - IEEE Vehicular Technology Conference
BT - 2010 IEEE 72nd Vehicular Technology Conference Fall, VTC2010-Fall - Proceedings
T2 - 2010 IEEE 72nd Vehicular Technology Conference Fall, VTC2010-Fall
Y2 - 6 September 2010 through 9 September 2010
ER -