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ICASSP
2011
IEEE

Sum-rate maximization of two-way amplify-and-forward relay networks with imperfect channel state information

8 years 6 months ago
Sum-rate maximization of two-way amplify-and-forward relay networks with imperfect channel state information
Considering a two-way amplify-and-forward (AF) relay network and aiming to simultaneously maximize the two users’ mutual information lower bounds in the presence of channel estimation errors, we study the Pareto-front of users’ mutual information lower bounds. Based on the Pareto-front we investigate the optimal power allocation among the two users and the relay, as well as the optimal power allotment between training and data symbols that maximize the average sum-rate lower bound, and explore the variations of these optimal power allocation as the relay position changes. We also show that the mean square error (MSE) of channel estimation is minimized when training vectors transmitted by the two users are orthogonal.
Yupeng Jia, Azadeh Vosoughi
Added 20 Aug 2011
Updated 20 Aug 2011
Type Journal
Year 2011
Where ICASSP
Authors Yupeng Jia, Azadeh Vosoughi
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