Optimal amplify and forward strategy for two-way relay channel with multiple relays

An iterative algorithm is proposed to achieve the optimal rate region in a two-way relay channel, where two nodes want to exchange data with each other using multiple relays, and each relay employs an amplify and forward strategy. The iterative algorithm solves a power minimization problem at every...

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Bibliographic Details
Published in:2009 IEEE Information Theory Workshop on Networking and Information Theory pp. 181 - 185
Main Authors: Vaze, R., Heath, R.W.
Format: Conference Proceeding
Language:English
Published: IEEE 01.06.2009
Subjects:
AWGN
Digital relays
Downlink
Heat engines
Iterative algorithms
Minimization methods
Network coding
Resistance heating
Upper bound
Wireless communication
ISBN:1424445353, 9781424445356
Online Access:Get full text
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Summary:An iterative algorithm is proposed to achieve the optimal rate region in a two-way relay channel, where two nodes want to exchange data with each other using multiple relays, and each relay employs an amplify and forward strategy. The iterative algorithm solves a power minimization problem at every step, subject to minimum signal-to-interference-and-noise ratio constraints, which is non-convex, however, for which the Karush Kuhn Tucker conditions are sufficient for optimality. Using simulations, the achievable rate region of the iterative algorithm is compared with the cut-set upper bound; the gap is shown to be quite small for most cases.
ISBN:1424445353
9781424445356
DOI:10.1109/ITWNIT.2009.5158567