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Power allocation for F/TDMA multiuser two-way relay networks

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2 Author(s)
Min Chen ; Pennsylvania State University, PA ; Aylin Yener

We consider a multiuser two-way relay network where multiple pairs of users exchange information with the assistance of a relay node, using orthogonal channels per pair. For a variety of two-way relaying mechanisms, such as decode- and- forward (DF), amplify-and-forward (AF) and compress-and-forward (CF), we investigate the problem of optimally allocating relay's power among the user pairs it assists such that an arbitrary weighted sum rate of all users is maximized, and solve the problem as one or a set of convex problems for each relaying scheme. Numerical results are presented to demonstrate the performance of the optimum relay power allocation as well as the comparison among different two-way relaying schemes.

Published in:

IEEE Transactions on Wireless Communications  (Volume:9 ,  Issue: 2 )