Abstract
In this paper, a new analytical approach is developed for the evaluation of the outage probability of decode-and-forward (DF) automatic-repeat-request (ARQ) relaying under packet-rate fading (fast fading) channels. Based on this approach, a closed-form asymptotically tight (as SNR → ∞) approximation of the outage probability is derived, and the diversity order of the DF cooperative ARQ relay scheme is shown to be equal to 2L − 1, where L is the maximum number of ARQ retransmissions. The closed-form expression clearly shows that the achieved diversity is partially due to the DF cooperative relaying and partially due to the fast fading nature of the channels (temporal diversity). Numerical and simulation studies illustrate the theoretical developments.
This work was supported in part by the U.S. Air Force Research Laboratory under Grant FA8750-08-1-0063. Approved for Public Release; distribution unlimited, 88ABW-2009-0133, 14JAN09.
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© 2010 ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering
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Lee, S., Su, W., Batalama, S., Matyjas, J.D. (2010). Outage Probability for ARQ Decode-and-Forward Relaying under Packet-Rate Fading. In: Zheng, J., Mao, S., Midkiff, S.F., Zhu, H. (eds) Ad Hoc Networks. ADHOCNETS 2009. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 28. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-11723-7_58
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DOI: https://doi.org/10.1007/978-3-642-11723-7_58
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