The Cyclic Prefix of OFDM/DMT - An Analysis

Summary, in English

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

• Author: Per Ödling; W Henkel; Per Ola Börjesson; G Tauböck; N Petersson; Albin Johansson
• Department/s: Department of Electrical and Information Technology
• Publishing year: 2002
• Language: English
• Publication/Series: Proceedings of the 2002 International Zurich Seminar on Broadband Communications (IZS 2002)
• Links: http://dx.doi.org/10.1109/IZSBC.2002.991762
• Document type: Conference paper
• Topic: Electrical Engineering, Electronic Engineering, Information Engineering
• Conference name: International Zurich Seminar on Broadband Communications, Access, Transmission, Networking
• Conference date: 2002-02-19 - 2002-02-21
• Conference place: ETH, Zurich, Switzerland
• Status: Published