| 多用户OFDM系统中分组跳频算法及性能分析 |
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| 引用本文： | 姜永权,林元模.多用户OFDM系统中分组跳频算法及性能分析[J].汕头大学学报(自然科学版),2009,24(4):68-73. |
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| 作者姓名： | 姜永权 林元模 |
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| 作者单位： | 汕头大学电子工程系,广东汕头,515063 |
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| 摘 要： | 针对多用户OFDM系统,提出一种新的分组跳频算法,将多个处于深衰落子载波上的频域序列组合构成一个短OFDM帧,动态地分配到系统空闲子载波上进行传输,以解决深衰落所带来的系统性能恶化问题,同时优化系统的资源分配.仿真结果表明,这种分组跳频算法与传统算法相比,能明显改善系统的误码率性能.
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| 关 键 词： | 多用户OFDM 分组跳频 误码率 |
Group Frequency Hopping Algorithm and Performance Analysis for Multi-User 0FDM System |
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| JIANG Yong-quan,LIN Yuan-mo.Group Frequency Hopping Algorithm and Performance Analysis for Multi-User 0FDM System[J].Journal of Shantou University(Natural Science Edition),2009,24(4):68-73. |
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| Authors: | JIANG Yong-quan LIN Yuan-mo |
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| Institution: | (Department of Electronic Engineering,Shantou Univerisyt ,Shantou 515063,Guangdong,cina) |
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| Abstract: | In order to solve the problem of performance degradation caused by deep fading and optimize system resourec allocation, a novel group frequency hopping（FH） algorithm for multi- user orthogunal frequency-division muhiplexin g （OFDM） system is proposed. The proposed algorithm consists of frequency-domain sequences on deep fading sub-carriers of a short-OFDM frame, which is allocated dynamically to the idle sub-carriers to transmit. Simulation results indicate that the proposed algorithm has a better BER performance compared with conventional algorithms. |
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| Keywords: | multi-user OFDM group frequency hopping BER |
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