Adaptive mode selection in bidirectional buffer-aided relay networks with fixed transmit powers
Jamali V, Zlatanov N, Ikhlef A, Schober R (2013)
Publication Type: Conference contribution
Publication year: 2013
Publisher: European Signal Processing Conference, EUSIPCO
Conference Proceedings Title: European Signal Processing Conference
Event location: Marrakech
ISBN: 9780992862602
Abstract
We consider a bidirectional network in which two users exchange information with the help of a buffer-aided relay. In such a network without direct link between user 1 and user 2, there exist six possible transmission modes, i.e., four point-to-point modes (user 1-to-relay, user 2-to-relay, relay-to-user 1, relay-to-user 2), a multiple access mode (both users to the relay), and a broadcast mode (the relay to both users). Because of the buffering capability at the relay, the transmissions in the network are not restricted to adhere to a predefined schedule, and therefore, all the transmission modes in the bidirectional relay network can be used adaptively based on the instantaneous channel state information (CSI) of the involved links. For the considered network, assuming fixed transmit powers for both the users and the relay, we derive the optimal transmission mode selection policy which maximizes the sum rate. The proposed policy selects one out of the six possible transmission modes in each time slot based on the instantaneous CSI. Simulation results confirm the effectiveness of the proposed protocol compared to existing protocols. © 2013 EURASIP.
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APA:
Jamali, V., Zlatanov, N., Ikhlef, A., & Schober, R. (2013). Adaptive mode selection in bidirectional buffer-aided relay networks with fixed transmit powers. In European Signal Processing Conference. Marrakech, MA: European Signal Processing Conference, EUSIPCO.
MLA:
Jamali, Vahid, et al. "Adaptive mode selection in bidirectional buffer-aided relay networks with fixed transmit powers." Proceedings of the 2013 21st European Signal Processing Conference, EUSIPCO 2013, Marrakech European Signal Processing Conference, EUSIPCO, 2013.
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