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Pilot Assisted Channel Estimation for OFDM in Mobile Cellular Systems

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Author

Summary, in English

The use of pilot symbols for channel estimation introduces overhead and it is thus desirable to keep the number of pilot symbols to a minimum. The number of needed pilot symbols for a desired bit error rate and Doppler frequency is highly dependent on the pilot pattern used in orthogonal frequency division multiplexed, OFDM, systems. Five different pilot patterns are analysed by means of resulting bit error rate, which is derived from channel statistics. Rearrangement of the pilot pattern enables a reduction in the number of needed pilot symbols up to a factor 10, still retaining the same performance. The analysis is general and can be used for performance analysis and design of pilot patterns for any OFDM system

Publishing year

1997

Language

English

Pages

1639-1643

Publication/Series

Proceedings of IEEE Vehicular Technology Conference, Phoenix, U.S.A

Document type

Conference paper

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • Doppler effect
  • cellular radio
  • coding errors
  • error statistics
  • frequency division multiplexing
  • multipath channels
  • parameter estimation
  • quadrature phase shift keying

Conference name

IEEE Vehicular Technology Conference, 1997

Conference date

1997-05-04 - 1997-05-07

Conference place

Phoenix, AZ, United States

Status

Published

ISBN/ISSN/Other

  • ISBN: 0-7803-3659-3