| 一种OFDMA系统半静态干扰协调算法 |
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| 引用本文： | 白玉,冯春燕,张天魁.一种OFDMA系统半静态干扰协调算法[J].无线电通信技术,2009,35(1):11-13. |
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| 作者姓名： | 白玉 冯春燕 张天魁 |
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| 作者单位： | 北京邮电大学,通信网络综合技术研究所,北京,100876 |
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| 摘 要： | 为了解决多小区OFDMA系统边缘用户受到严重的同频干扰问题,提出了一种基于小区边缘用户数的半静态干扰协调算法SICUN。该算法用小区边缘用户数指示小区边缘业务量的大小,结合特定的频率资源优先级规划方案以确定系统中小区中心、边缘用户的可用频率资源,在此基础上进行了补偿式功率控制。仿真结果表明:SICUN能在保证小区边缘用户性能的前提下,较大地提高系统整体性能。
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| 关 键 词： | OFDMA 半静态干扰协调 频率资源优先级 补偿式功率控制 |
A Semi-static Interference Coordination Algorithm of OFDMA Systems |
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| BAI Yu,FENG Chun-yan,ZHANG Tian-kui.A Semi-static Interference Coordination Algorithm of OFDMA Systems[J].Radio Communications Technology,2009,35(1):11-13. |
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| Authors: | BAI Yu FENG Chun-yan ZHANG Tian-kui |
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| Affiliation: | ( Institute of Communication Networks Integrated Technology of BUPT, Beijing 100876, China) |
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| Abstract: | In order to solve the severe Co-Channel Interference （CCI） problem suffered by cell-edge users in multi-cell OFDMA system, a semi-static interference coordination algorithm based on cell-edge users number （SICUN） was proposed. By using cell-edge users number as the indicator of cell-edge traffic load and introducing a novel frequency resource priority scheme, the proposed algorithm figured out the available frequency resource utilized by cell-inner users and cell-edge users ,and furthermore integrated with a compensatory power control scheme. The simulation results show that SICUN can improve system throughput effectively while guarantee cell-edge users performance. |
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| Keywords: | OFDMA |
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