Multi-criteria ranking based greedy algorithm for physical resource block allocation in multi-carrier wireless above communication systems文档.pdf

Signal Processing 92 (2012) 2706–2717 Contents lists available at SciVerse ScienceDirect Signal Processing journal homepage: /locate/sigpro Multi-criteria ranking based greedy algorithm for physical resource block allocation in multi-carrier wireless communication systems $ Obilor Nwamadi, Xu Zhu n, Asoke K. Nandi Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool L69 3GJ, UK a r t i c l e i n f o a b s t r a c t Article history: A computationally efficient algorithm, referred to as the multi-criteria ranking based Received 1 August 2011 greedy (MCRG) algorithm, is proposed for physical resource block (PRB) allocation in Received in revised form multi-carrier wireless communications systems, where the users’ utilities are ranked 16 February 2012 with multiple criteria. The MCRG algorithm not only outperforms the previous single Accepted 30 April 2012 criterion ranking based greedy algorithm in terms of throughput and outage prob- Available online 7 May 2012 ability, but also provides a near optimal performance, irrespective of whether the Keywords: channel frequency response (CFR) or bit error rate (BER) or throughput optimisation Resource allocation utilities are used. In particular, when the MCRG algorithm is used to optimise the CFR Physical resource block