Computer Science – Information Theory
Scientific paper
2008-11-26
Computer Science
Information Theory
5 pages, 4 figures, To appear in the Proceedings of the 2008 IEEE International Symposium on Wireless Communication Systems (I
Scientific paper
This paper presents a cross-layer approach to jointly design adaptive modulation and coding (AMC) at the physical layer and cooperative truncated automatic repeat request (ARQ) protocol at the data link layer. We first derive an exact closed form expression for the spectral efficiency of the proposed joint AMC-cooperative ARQ scheme. Aiming at maximizing this system performance measure, we then optimize an AMC scheme which directly satisfies a prescribed packet loss rate constraint at the data-link layer. The results indicate that utilizing cooperative ARQ as a retransmission strategy, noticeably enhances the spectral efficiency compared with the system that employs AMC alone at the physical layer. Moreover, the proposed adaptive rate cooperative ARQ scheme outperforms the fixed rate counterpart when the transmission modes at the source and relay are chosen based on the channel statistics. This in turn quantifies the possible gain achieved by joint design of AMC and ARQ in wireless relay networks.
Eliasi Behrouz
Harsini Jalil S.
Lahouti Farshad
Mardani Morteza
No associations
LandOfFree
Joint Adaptive Modulation-Coding and Cooperative ARQ for Wireless Relay Networks does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Joint Adaptive Modulation-Coding and Cooperative ARQ for Wireless Relay Networks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Joint Adaptive Modulation-Coding and Cooperative ARQ for Wireless Relay Networks will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-275059