Du är här

Channel estimation with superimposed pilot sequence

Författare:
Publiceringsår: 1999
Språk: Engelska
Sidor: 2162-2166
Publikation/Tidskrift/Serie: Proc. IEEE GLOBECOM '99, Rio de Janeiro, Brazil, December 1999
Volym: 4
Dokumenttyp: Konferensbidrag
Förlag: IEEE

Sammanfattning

For the purpose of various synchronization tasks (including carrier phase, time, frequency, and frame synchronization), one may add a known pilot sequence, typically a pseudo-noise sequence, to the unknown data sequence. This approach is known as a spread-spectrum pilot technique or as a superimposed pilot sequence technique. In this paper, we apply the superimposed pilot sequence technique for the purpose of channel estimation (CE). We propose and verify a truly coherent receiver based on the Viterbi algorithm, which is optimal in the sense of per-survivor processing. We also suggest a generic low-cost receiver structure based on reduced-state sequence estimation. Among the distinct advantages compared to conventional pilot-symbol-assisted CE are (i) a lack of bandwidth expansion and (ii) a significantly improved performance in fast fading environments. The proposed Viterbi receiver may also be used as an alternative receiver for pilot-symbol-assisted CE

Disputation

Nyckelord

  • Technology and Engineering
  • Rayleigh channels
  • estimation theory
  • pseudonoise codes
  • receivers
  • spread spectrum communication
  • synchronisation

Övrigt

Global Telecommunications Conference. GLOBECOM '99
1999-12-05/1999-12-09
Rio de Janeireo, Brazil
Published
Yes
  • ISBN: 0-7803-5796-5

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen

LERU logo U21 logo