Computer Science – Information Theory
Scientific paper
2007-11-20
Computer Science
Information Theory
27 pages, 5 figures, submitted to the IEEE Transactions on Vehicular Technology, revised May 2008
Scientific paper
This paper considers the problem of selecting a subset of nodes in a two-hop wireless network to act as relays in aiding the communication between the source-destination pair. Optimal relay subset selection with the objective of maximizing the overall throughput is a difficult problem that depends on multiple factors including node locations, queue lengths and power consumption. A partial decode-and-forward strategy is applied in this paper to improve the tractability of the relay selection problem and performance of the overall network. Note that the number of relays selected ultimately determines the performance of the network. This paper benchmarks this performance by determining the net diversity achieved using the relays selected and the partial decode-and-forward strategy. This framework is subsequently used to further transform relay selection into a simpler relay placement problem, and two proximity-based approximation algorithms are developed to determine the appropriate set of relays to be selected in the network. Other selection strategies such as random relay selection and a greedy algorithm that relies on channel state information are also presented. This paper concludes by showing that the proposed proximity-based relay selection strategies yield near-optimal expected rates for a small number of selected relays.
Heath Robert W. Jr.
Lo Caleb K.
Vishwanath Sriram
No associations
LandOfFree
Relay Subset Selection in Wireless Networks Using Partial Decode-and-Forward Transmission 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 Relay Subset Selection in Wireless Networks Using Partial Decode-and-Forward Transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Relay Subset Selection in Wireless Networks Using Partial Decode-and-Forward Transmission will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-413543