Exploiting Multiuser Diversity in OFDMA Wireless Mesh Networks by Fractional Spatial Reuse

被引：0

作者：

Xu, Jie ^{[1
]}

Wu, Yiqun ^{[1
]}

Niu, Zhisheng ^{[1
]}

Huang, Jinri ^{[2
]}

机构：

[1] Tsinghua Univ, Dept Elect Engn, Tsinghua Natl Lab Informat Sci & Technol, Beijing 100084, Peoples R China

[2] SK Telecom, Inst Network Technol, Kyeonggi, South Korea

来源：

2010 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS | 2010年

关键词：

RESOURCE-ALLOCATION; POWER;

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：

We consider subcarrier assignment and power allocation in OFDMA wireless mesh networks. Traditional full spatial reuse increases bandwidth efficiency but ignores multiuser diversity in the multi-hop network. Our method enables fractional spatial reuse with which multiuser diversity can also be exploited. The original optimization problem is decomposed into three tractable subproblems. First, subcarrier numbers on each link are decided according to end-to-end requirement and node power constraint. Then a novel link grouping method is proposed to utilize fractional spatial reuse in the network. Finally, a tabubased subcarrier assignment algorithms is designed to assign subcarriers to groups to exploit multiuser diversity. Performance is evaluated under various network sizes to investigate the impact of spatial reuse and simulation results show our proposed scheme achieves multiuser diversity in spatial reuse scenarios.(1)

引用

页数：5

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