| 基于协作分集的WiMAX上行链路性能增强研究 |
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| 引用本文： | 李皓,雷维嘉,谢显中.基于协作分集的WiMAX上行链路性能增强研究[J].重庆邮电学院学报(自然科学版),2009(1). |
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| 作者姓名： | 李皓 雷维嘉 谢显中 |
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| 作者单位： | 重庆邮电大学个人通信研究所/移动通信信息产业部重点实验室; |
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| 基金项目： | 国家自然科学基金(60872037);;重庆市自然科学基金(CSTC2006BB2363);;重庆市教委科技研究项目(KJ080508);;重庆邮电大学移动通信重点实验室开放研究基金 |
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| 摘 要： | 协作分集是一种新的空间分集技术,将协作分集应用到WiMAX系统中,与WiMAX的物理层核心技术OFDM结合起来,一方面可以利用OFDM技术提高频谱效率,有效地抵抗信道频率选择性衰落的影响;另一方面WiMAX可以利用协作分集获得分集增益,有效地提高整个系统的性能。通过仿真结果表明,加入协作分集的WiMAX系统相对于原始WiMAX系统获得了显著的分集增益,系统的误码性能得到了提高。
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| 关 键 词： | 协作分集 WiMAX 正交频分复用 频率选择性衰落 |
Research on performance of WiMAX uplink based on cooperative diversity |
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| LI Hao,LEI Wei-jia,XIE Xian-zhong.Research on performance of WiMAX uplink based on cooperative diversity[J].Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition),2009(1). |
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| Authors: | LI Hao LEI Wei-jia XIE Xian-zhong |
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| Institution: | Institute of Personal Communication/MII Key Lab on Mobile Communication;Chongqing University of Posts and Telecommunications;Chongqing 400065;P.R.China |
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| Abstract: | Cooperative diversity is a new form of spatial diversity.The cooperative diversity was applied to the WiMAX and combined with its key technology OFDM.On the one hand,the frequency selective fading problems can be solved through cooperation diversity based on OFDM;on the other hand,the system performance can be improved through diversity.Simulation results show that compared with original WiMAX,the WiMAX with cooperative diversity obtains diversity gains,and its error performance is enhanced. |
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