標題: Combined partial reuse and soft handover in OFDMA downlink transmission
作者: Chiu, Che-Sheng
Huang, Chia-Chi
電信工程研究所
Institute of Communications Engineering
關鍵字: OFDMA;interference coordination;partial reuse;soft handover
公開日期: 2008
摘要: The inter-cell interference problem is a key issue in a multi-cell OFDMA system. A number of inter-cell interference mitigation schemes have been suggested to address this problem and among them, partial reuse is considered a most promising one for emerging OFDMA systems. In this paper, we propose an inter-cell interference mitigation scheme for an OFDMA downlink system. The proposed scheme makes use of a combination of partial reuse and soft handover. The basic idea of the proposed scheme is to select the better signal quality among a partial reuse scheme and a soft handover scheme for the cell edge users. Compared to the conventional partial reuse scheme, simulation results show that the cell edge throughput can be significantly improved by using the proposed scheme. Furthermore, considering the data-rate fairness among the users, the results prove that our approach can give better average cell throughput as compared with the conventional partial reuse scheme, especially for a very fair system.
URI: http://hdl.handle.net/11536/135035
ISBN: 978-1-4244-1644-8
ISSN: 1550-2252
期刊: 2008 IEEE 67TH VEHICULAR TECHNOLOGY CONFERENCE-SPRING, VOLS 1-7
起始頁: 1707
結束頁: +
顯示於類別:會議論文