Resource Allocation in Multi-cell OFDMA-based Relay Networks

Abstract— Cooperative relay networks combined with Orthogonal Frequency Division Multiplexing Access (OFDMA) technology has been widely recognized as a promising candidate for future cellular infrastructure due to the performance enhancement by flexible resource allocation schemes. The majority of the existing schemes aim to optimize single cell performance gain. However, the higher frequency reuse factor and smaller cell size requirement lead to severe inter-cell interference problem. Therefore, the multi-cell resource allocation of subcarrier, time scheduling and power should be jointly considered to alleviate the severe inter-cell interference problem. In this paper, the joint resource allocation problem is formulated. Considering the high complexity of the optimal solution, a two-stage resource allocation scheme is proposed. In the first stage, all of the users in each cell are selected sequentially and the joint subcarrier allocation and scheduling is conducted for the selecte...

• Type: Journal
• Year: 2010
• Where: INFOCOM
• Authors: Yao Hua, Qian Zhang, Zhisheng Niu
• Keywords: Communications, INFOCOM 2010, Resource Allocation, Resource Allocation Scheme, Severe Inter-cell Interference