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Green resource allocation with QoS provisioning for cooperative cellular network

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3 Author(s)
Phuyal, U. ; Univ. of British Columbia, Vancouver, BC, Canada ; Jha, S.C. ; Bhargava, V.K.

Relay-based cooperative transmission in cellular network has been an area of tremendous research recently. Transmission via relays introduces power consumption at both the source and relay stations which may lead to less efficient system in terms of power consumption. Because of increasing energy cost for cellular systems and concern over environmental issues, an energy efficient design of resource allocation scheme in cooperative cellular network is of prime importance. In this paper, we propose a novel resource allocation scheme in order to maximize the energy aware system performance. The proposed low-complexity scheme allocates powers for base station and relay by using a strategy that minimizes required transmit power per unit achieved throughput and at the same time guarantees a predefined quality of service (QoS) which is specified in terms of minimum end-to-end data rate required by each user. Simulation results show that proposed scheme outperforms existing power allocation schemes by decreasing required power to guarantee the QoS without increasing system outage penalty, which is essential for green communication systems.

Published in:

Information Theory (CWIT), 2011 12th Canadian Workshop on

Date of Conference:

17-20 May 2011