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Performance of Soft Reservation-based Soft Frequency Reuse Scheme for Cellular OFDMA Systems

Authors:
Hye-Joong Kang
Jin W. Park
Chung G. Kang

Keywords: inter-cell interference coordination; soft fractional reuse; soft reservation; multi-user diversity; OFDMA

Abstract:
The conventional soft frequency reuse (SFR) scheme has been considered as a useful means of inter-cell interference coordination (ICIC) in the downlink of cellular OFDMA systems. It is based on hard reservation, which partitions the resource regions into two orthogonal portions, one solely dedicated to users in the cell center and the other solely dedicated to those in the cell edge. In this paper, we consider the variants of SFR scheme, which are based on a notion of soft reservation. As they allow for sharing a whole resource region among all or some users, the wider resource region leads to the multi-user diversity gain, whiles still maintaining a feature of interference mitigation by power control and dynamic interference avoidance by opportunistic scheduling in each cell. We demonstrate that a soft reservation-based SFR scheme can be the best means of trading off the average system throughput and edge-user throughput.

Pages: 286 to 291

Copyright: Copyright (c) IARIA, 2011

Publication date: May 22, 2011

Published in: conference

ISSN: 2308-4006

ISBN: 978-1-61208-133-5

Location: Venice/Mestre, Italy

Dates: from May 22, 2011 to May 27, 2011