OFDM/DMT的循环前缀分析

2002 International Zurich Seminar on Broadband Communications Access - Transmission - Networking (Cat. No.02TH8599) Pub Date : 2002-08-07 DOI:10.1109/IZSBC.2002.991762

W. Henkel, G. Taubock, Per Ödling, P. Börjesson, N. Petersson

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引用次数: 146

摘要

我们解决了太短的循环前缀对多载波系统的影响，如正交频分复用(OFDM)和离散多音(DMT)。主要结果是码间干扰(ISI)和载流子间干扰(ICI)可以在光谱上集中，并给出了这种集中的解析表达式。一个实际含义是，例如，某些xDSL系统中的循环前缀可以出奇地短，如ADSL传输的一个示例所示。

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The cyclic prefix of OFDM/DMT - an analysis

We address the impact of a too short cyclic prefix on multicarrier systems such as orthogonal frequency division multiplexing (OFDM) and discrete multitone (DMT). The main result is that the intersymbol interference (ISI) and intercarrier interference (ICI) may be spectrally concentrated and analytical expressions showing this are given. A practical implication is, e.g., that the cyclic prefix in some xDSL systems can be surprisingly short, as shown in one example of ADSL transmission.

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2002 International Zurich Seminar on Broadband Communications Access - Transmission - Networking (Cat. No.02TH8599)

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