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QoS-aware radio resource allocation for multi-cell OFDMA network

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4 Author(s)
Yue Liu ; Electron. Eng. & Comput. Sci., Queen Mary Univ. of London, London, UK ; Cuthbert, L. ; Xu Yang ; Yapeng Wang

This paper provides a new approach allocating resources between multimedia users in a multi-cell OFDMA system in order to maximize the number of users that can achieve their QoS requirements. It does this by formulating the problem as a non-cooperative game. We propose a distributed algorithm to get the Nash equilibrium (NE) as well as introducing a new performance indicator (the qualified throughput) to measure the actual throughput gained by those users whose QoS requirement is met. The proposed algorithm can achieve fast convergence and enhanced performance; it can also efficiently deal with an unbalanced user distribution as well as with a uniform one. In this paper we also validate the algorithm by using Iterative Water Filling (IWF) as a benchmark and compare it with an existing algorithm. It can offer significant advantages and successfully handle a mix of QoS requirements between users. The approach is generic but in the paper is applied to the uplink in a scenario based on IEEE802.22 Cognitive Radio.

Published in:

Communication Systems (ICCS), 2012 IEEE International Conference on

Date of Conference:

21-23 Nov. 2012