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Low-complex frame synchronization in OFDM systems
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.
Luleå tekniska universitet.
Telia Research AB.
Luleå tekniska universitet.
1995 (English)In: Gateway to the 21st century : record: 1995 Fourth IEEE International Conference on Universal Personal Communications, Meiji Kinenkan, Tokyo, Japan, November 6 - 10, 1995, Piscataway, NJ: IEEE Communications Society, 1995, 982-986 p.Conference paper (Refereed)
Abstract [en]

Orthogonal frequency-division multiplexing (OFDM) systems have gained an increased interest due to their use in wireless applications such as mobile communication systems. A novel data-based frame synchronization method for OFDM-systems is presented. OFDM frames are shown to contain sufficient information to synchronize a system without the use of pilots. The cyclic extension, preceding OFDM frames, is of decisive importance for this method. Based on only the sign bits of the in-phase and the quadrature components of the received OFDM signal, the maximum likelihood solution is derived. This solution basically consists of a correlator, a moving sum and a peak detector. The stability of the generated frame-clock is improved significantly by averaging over a few number of frames. Simulations show that this low-complex, averaging method can be used to synchronize an OFDM system on twisted pair copper wires and in slowly fading radio channels

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 1995. 982-986 p.
Research subject
Signal Processing
URN: urn:nbn:se:ltu:diva-29896DOI: 10.1109/ICUPC.1995.497156Local ID: 384769d0-dfd3-11dc-9e29-000ea68e967bISBN: 0-7803-2955-4OAI: diva2:1003123
IEEE International Conference on Universal Personal Communications : 06/11/1995 - 10/11/1995
Godkänd; 1995; 20080220 (ysko)Available from: 2016-09-30 Created: 2016-09-30Bibliographically approved

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Beek, Jaap van de
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