Four-antenna based structure for cellular networks with frequency reuse factor of one

Authors:
Weiwei Wang;Jun Cai;Zihua Guo;Changjia Chen;Xuemin Shen
Affiliations:
University of Manitoba, Winnipeg, Manitoba, Canada;University of Manitoba, Winnipeg, Manitoba, Canada;Lenovo Corporate Research, Beijing, China;Beijing Jiaotong University, Beijing, China;University of Waterloo, Waterloo, Ontario, Canada
Venue:
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Year:
2009

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Abstract

In this paper, a new four-antenna based structure (FAS) is introduced for capacity improvement in future cellular networks with frequency reuse factor of 1. In FAS, each cell consists of one omni-directional antenna located at the cell center and three 120-degree directional antennas located at the cell edge. In order to achieve effective system bandwidth allocation among four antennas, novel spectrum planning schemes for both downlink (DL) and uplink (UL) are proposed. Theoretical analysis and simulation demonstrate that the proposed cellular structure can significantly improve the system capacity in both DL and UL, especially at the cell edge.