A GRAPH APPROACH FOR COORDINATED CHANNEL ALLOCATION IN DOWNLINK MULTI-CELL OFDMA NETWORKS

被引：0

作者：

Zhang, Mingxi ^{[1
]}

Liu, Yuan ^{[1
]}

Tao, Meixia ^{[1
]}

Gao, Xinying ^{[2
]}

机构：

[1] Shanghai Jiao Tong Univ, Dept Elect Engn, Shanghai 200240, Peoples R China

[2] DOCOMO Beijing Commun Labs Co Ltd, Beijing 100190, Peoples R China

来源：

PROCEEDINGS OF 2011 INTERNATIONAL CONFERENCE ON COMMUNICATION TECHNOLOGY AND APPLICATION, ICCTA2011 | 2011年

关键词：

multi-cell; orthogonal frequency division multiple access (OFDMA); channel allocation; graph theory;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Radio resource allocation in multi-cell OFDMA (orthogonal frequency-division multiple access) networks is a challenging and practically important problem. In this work we propose a new graph based sub-channel assignment scheme for downlink multi-cell OFDMA networks. Our scheme consists of two phases, both of which are formulated as graph problems. The first phase is location-aware interference management, including inter-cell interference coordination (ICIC) as well as intra-cell interference avoidance. The second phase is channel-aware sub-channel assignment. Simulation results demonstrate that the proposed scheme significantly enhances the system throughput while maintaining user-Quality of Service (QoS) compared with existing sub channel assignment schemes.

引用

页码：238 / 242

页数：5

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