Interference Mitigation Through Inter-Cell Interference Coordination Using Virtual PRB Allocation in 4G Networks
作者: Wafa Ben HassenMériem AfifSami Tabbane
作者单位: 1Carthage University
刊名: Wireless Personal Communications, 2016, Vol.90 (3), pp.1179-1209
来源数据库: Springer Journal
DOI: 10.1007/s11277-016-3384-8
关键词: 4GMIMOOFDMAAMCICICInterferenceVirtual PRB
英文摘要: Abstract(#br)This paper proposes a distributed and coordinated resource allocation algorithm in multi-cell MIMO-OFDMA systems. Firstly, each cell classifies mobile users into cell-edge and cell-center users based on a dynamic threshold aiming to avoid throughput loss. Secondly, each cell independently and dynamically allocates physical resource blocks (PRBs) to its cell-center users using a recursive resource allocation algorithm where the effective SINR metric is investigated. After that, each cell aggregates the unused sub-carriers by its cell-center users to construct virtual PRBs. These latter are intended to be allocated to cell-edge users. Here, each cell informs its neighboring cells, via messages exchange, about its unused sub-carriers and their corresponding SINRs. If two or more...
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影响因子:0.428 (2012)