Symbol-aided channel estimation with nonselective Rayleigh fading channels

Author

D´Andrea, A.N. ; Mengali, U.

Author_Institution

Dept. of Inf. Eng., Pisa Univ.

Volume

44

Issue

1

fYear

1995

fDate

2/1/1995 12:00:00 AM

Firstpage

41

Lastpage

49

Abstract

New algorithms are proposed to implement coherent detection of PSK signals transmitted over frequency-flat Rayleigh channels. Channel gain estimates are derived both from known symbols multiplexed with the data stream and from tentative data decisions. The performance of these algorithms is assessed by computer simulation with uncoded and trellis-coded modulation. Comparisons are also made with differentially coherent detection (DPSK) and with perfect coherent detection (corresponding to ideal knowledge of the fading process). Simulation results demonstrate that these algorithms can track adequately the severe fading fluctuations encountered on a Rayleigh channel and that their superiority over DPSK becomes impressive with fast fading

Keywords

Rayleigh channels; estimation theory; fading; mobile radio; phase shift keying; trellis coded modulation; DPSK; PSK signals; channel gain estimates; coherent detection; computer simulation; data decisions; data stream; differentially coherent detection; fast fading; frequency-flat Rayleigh channels; nonselective Rayleigh fading channels; perfect coherent detection; performance; simulation results; trellis-coded modulation; uncoded modulation; Channel estimation; Computer simulation; Convolutional codes; Differential quadrature phase shift keying; Fading; Frequency; Phase shift keying; Rayleigh channels; Signal detection; Transmitters;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/25.350268

Filename

350268