Computer Science – Information Theory
Scientific paper
2007-06-23
Computer Science
Information Theory
30 pages, 9 figures, submitted to the IEEE Transactions on Vehicular Technology, revised March 2008
Scientific paper
This paper presents a decentralized relay selection protocol for a dense wireless network and describes channel feedback strategies that improve its performance. The proposed selection protocol supports hybrid automatic-repeat-request transmission where relays forward parity information to the destination in the event of a decoding error. Channel feedback is employed for refining the relay selection process and for selecting an appropriate transmission mode in a proposed adaptive modulation transmission framework. An approximation of the throughput of the proposed adaptive modulation strategy is presented, and the dependence of the throughput on system parameters such as the relay contention probability and the adaptive modulation switching point is illustrated via maximization of this approximation. Simulations show that the throughput of the proposed selection strategy is comparable to that yielded by a centralized selection approach that relies on geographic information.
Heath Robert W. Jr.
Lo Caleb K.
Vishwanath Sriram
No associations
LandOfFree
The Impact of Channel Feedback on Opportunistic Relay Selection for Hybrid-ARQ in Wireless 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 The Impact of Channel Feedback on Opportunistic Relay Selection for Hybrid-ARQ in Wireless Networks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Impact of Channel Feedback on Opportunistic Relay Selection for Hybrid-ARQ in Wireless Networks will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-178326