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Pilot Assisted Channel Estimation for OFDM in Mobile Cellular Systems

Författare:
Publiceringsår: 1997
Språk: Engelska
Sidor: 1639-1643
Publikation/Tidskrift/Serie: Proceedings of IEEE Vehicular Technology Conference, Phoenix, U.S.A
Dokumenttyp: Konferensbidrag
Förlag: IEEE

Sammanfattning

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

Disputation

Nyckelord

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

Övriga

IEEE 47th Vehicular Technology Conference
1997-05-04/1997-05-07
Phoenix, AZ, USA
Published
Yes
  • ISBN: 0-7803-3659-3

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