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Time-efficient resource allocation algorithm over HSDPA in femtocell networks

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3 Author(s)
Zhenfeng He ; Dept. of Electr. & Electron. Eng., Imperial Coll. London, London, UK ; Gurcan, M.K. ; Ghani, H.A.

This paper presents a time-efficient optimal resource allocation algorithm aiming to maximize the system throughput of the single-user High Speed Downlink Packet Access (HSDPA) deployed in a femtocell base station. The system throughput maximization with constrained total power is formulated as a constrained integer programming problem. We first prove that a two-group bit and energy allocation provides the global optimum solution in the system without multipath. We then focus on the use of the two-group allocation method over frequency selective channels. A pre-processing method was used to systematically cluster and remove channels to prevent using energies over severely degraded channels with the two-group allocation approach. This improves the system throughput whilst greatly reducing the computation complexity. The proposed two-group approach with channel removal is suitable for femtocell base station with limited signal processing capability.

Published in:

Personal, Indoor and Mobile Radio Communications Workshops (PIMRC Workshops), 2010 IEEE 21st International Symposium on

Date of Conference:

26-30 Sept. 2010