| 用于OFDMA系统多小区干扰协调的功率分配算法 |
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| 引用本文： | 李智伟,冯春燕,张天魁,郑洁莹. 用于OFDMA系统多小区干扰协调的功率分配算法[J]. 北京邮电大学学报, 2008, 31(1): 71-74 |
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| 作者姓名： | 李智伟 冯春燕 张天魁 郑洁莹 |
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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;北京邮电大学,通信网络综合技术研究所,北京,100876;北京邮电大学,通信网络综合技术研究所,北京,100876;北京邮电大学,通信网络综合技术研究所,北京,100876 |
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| 基金项目： | 教育部高等学校博士学科点专项科研基金 |
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| 摘 要： | 提出了一种用于小区间干扰协调的多小区自适应功率分配算法. 该算法利用相邻小区同频子信道间信干比的差异，通过平衡信干比，协调同频子信道上用户的发送功率，保证系统边缘用户性能，减小同频信道干扰，提高无线资源利用率. 仿真结果表明，该算法既可以很好地保证用户公平性，又能充分利用频谱资源以保障系统吞吐量.
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| 关 键 词： | 正交频分多址 功率分配 小区间干扰 干扰协调 |
| 文章编号： | 1007-5321（2008）01-0071-04 |
| 收稿时间： | 2007-05-30 |
| 修稿时间： | 2007-05-30 |
Power Allocation Scheme for Multicell Interference Coordination in OFDMA Systems |
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| LI Zhi-wei,FENG Chun-yan,ZHANG Tian-kui,ZHENG Jie-ying. Power Allocation Scheme for Multicell Interference Coordination in OFDMA Systems[J]. Journal of Beijing University of Posts and Telecommunications, 2008, 31(1): 71-74 |
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| Authors: | LI Zhi-wei FENG Chun-yan ZHANG Tian-kui ZHENG Jie-ying |
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| Affiliation: | (Institute of Continuing Education, Beijing University of Posts and Telecommunications, Beijing 100876, China) |
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| Abstract: | In order to coordinate the inter-cell interference, a multicell adaptive power allocation scheme was proposed for downlink orthogonal frequency division multiple access (OFDMA) cellular systems. In order to coordinate transmit power in co-subchannels, the difference of signal to interference plus noise ratio(SINR) between co-subchannels of adjacent cells was used to balance SINR. Then the scheme would be able to improve the edge users’ performance, reduce the interference in co-subchannels of adjacent cells and improve the radio resource utility. Simulation results show that the scheme could balance the performance of the system and ensure the throughput of the system. |
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| Keywords: | orthogonal frequency division multiple access power allocation inter-cell interference interference coordination |
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