Interference analysis and subchannel allocation schemes in tri-sectored OFDMA systems

被引：9

作者：

Kim, Keunyoung ^{[1
]}

Yeo, Geon-Min ^{[1
]}

Ryu, Byung-Han ^{[1
]}

Chang, Kapseok ^{[1
]}

机构：

[1] ETRI, Mobile Telecommun Res Div, Taejon, South Korea

来源：

2007 IEEE 66TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-5 | 2007年

关键词：

interference analysis; subchannel allocation; OFDMA;

D O I：

10.1109/VETECF.2007.391

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper analyzes the interference aspects of tri-sectored OFDMA systems and evaluates the performance of some subchannel allocation schemes to mitigate inter-sector interference. To maximize spectral efficiency, it is preferred to adopt frequency reuse of 1. But, carrier to interference and noise ratio (CINR) values at the boundary of sectors are extremely deteriorated. Two subchannel allocation methods are compared and evaluated in this environment. One is to maximize disparity, which is to maximize the number of subchannels in good CINR values, and the other is to minimize disparity, which is to maximize the number of subchannels in moderate CINR values. These schemes are compared under proportionally fair scheduling algorithm. Simulation results regarding to throughput show that the schemes outperform random allocation schemes in 802.16 based systems.

引用

页码：1857 / 1861

页数：5

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