Performance analysis and design of pilot-symbol aided TCM for a Rayleigh fading channel

Author

Bang, Y.-J. ; Jeong, G.-Y. ; Kim, C.J.

Author_Institution

Electron. & Telecommun. Res. Inst., Taejon, South Korea

Volume

146

Issue

3

fYear

1999

fDate

6/1/1999 12:00:00 AM

Firstpage

185

Lastpage

190

Abstract

A Chernoff bound is derived on the pairwise error event probability of pilot-symbol aided TCM schemes with L-fold space diversity in a Rayleigh fading channel. In the scheme, pilot-symbols are inserted periodically to estimate the channel characteristics. The fading processes experienced by the pilot-symbols are used to estimate those suffered by the data symbols using interpolation. The estimated fading characteristics are used to compute the symbol metrics of the Viterbi decoder. With the Chernoff bound derived, the cutoff rate of 16QAM and the bit error probability (BEP) of the trellis coded 16QAM scheme are calculated as a function of the signal-to-noise ratio (SNR) and the Doppler shift. New trellis codes are constructed according to the proposed design rule and are shown to result in a performance improvement over the conventional trellis code

Keywords

Doppler shift; Rayleigh channels; Viterbi decoding; diversity reception; error statistics; interpolation; land mobile radio; noise; quadrature amplitude modulation; trellis coded modulation; trellis codes; 16QAM; Chernoff bound; Doppler shift; Rayleigh fading channel; SNR; Viterbi decoder; bit error probability; channel characteristics estimation; cutoff rate; data symbols; design rule; estimated fading characteristics; interpolation; mobile radio communications; pairwise error event probability; performance analysis; pilot-symbol aided TCM; signal-to-noise ratio; space diversity; symbol metrics; trellis coded 16QAM; trellis codes;

fLanguage

English

Journal_Title

Communications, IEE Proceedings-

Publisher

iet

ISSN

1350-2425

Type

jour

DOI

10.1049/ip-com:19990351

Filename

788002