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重叠频分复用系统循环前缀的设计和分析
  • 期刊名称：电子科技大学学报，2009年1月
  • 时间：0
  • 分类：TN919[电子电信—通信与信息系统;电子电信—信息与通信工程]
  • 作者机构：[1]北京邮电大学信息工程学院,北京海淀区100876
  • 相关基金：国家自然科学基金（90604035）
  • 相关项目：未来移动通信系统中高频谱效率的理论研究
关键词： 循环前缀, 离散傅里叶变换, 非正交频分复用, 重叠频分复用, cyclic-prefix, discrete Fourier transform, non-orthogonal frequency division multiplexing, overlapped frequency division multiplexing
中文摘要：

研究了在时变多径频率选择性衰落信道条件下，重叠频分复用／非正交频分复用系统的离散傅里叶变换实现，并对0vFDM-DFT系统的循环前缀进行了分析和设计，讨论了两种不同的循环前缀设计方法，即普通循环前缀和补零方式循环前缀对系统性能的影响。分析和仿真结果表明，在时变多径频率选择性衰落信道条件下补零方式的循环前缀远好于普通方式的循环前缀，仿真结果也验证了OvFDM符号具有明显的抗衰落性能。

英文摘要：

This paper gives the discrete Fourier transform （DFT） implementation of the overlapped frequency division multiplexing （OvFDM） of non-orthogonal frequency division multiplexing （NOFDM） systems. This paper investigates the impact of conventional cyclic-prefix and zero-padding cyclic-prefix for DFT-OvFDM/DFT- NFODM systems in the time-variant frequency-selective fading channels, respectively. Theoretical analysis and simulation results show that the zero-padding cyclic-prefix can exploit much more frequency diversity than the conventional cvclic-prefix.

同期刊论文项目
未来移动通信系统中高频谱效率的理论研究
期刊论文 96 会议论文 87 著作 3
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