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Fairness and QoS-Based Resource Allocation in Multihop Relay Networks

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1 Author(s)
Girici, Tolga ; Dept. of Electr. & Electron. Eng., TOBB Univ. of Econ. & Technol., Ankara

In this paper we study the problem of subframe, subchannel and power allocation in OFDMA-based multihop relay networks. The system consists of a base station (BS), a number of relay stations (RS) and mobile stations (MS). We consider frame by frame scheduling, where the frame is divided into two subframes such as BS-RS and RS-MS subframes. We study two different problems, satisfying link rate requirements with minimum weighted total power and maximizing proportional fairness. For the first problem we find the optimal solution and also propose a less complex subframe and bandwidth allocation scheme with good performance. For the second problem, we propose an algorithm that outperforms an existing scheme with less feedback.

Published in:

Wireless Communications and Networking Conference, 2009. WCNC 2009. IEEE

Date of Conference:

5-8 April 2009

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