Two-stage Doppler-phasor-corrected TCM/DMPSK for shadowed mobile satellite channels

Author

McLane, P.J.

Author_Institution

Dept. of Electr. Eng., Queen´´s Univ., Kingston, Ont., Canada

Volume

41

Issue

8

fYear

1993

fDate

8/1/1993 12:00:00 AM

Firstpage

1137

Lastpage

1141

Abstract

A two-stage Doppler-phasor correction algorithm for mobile satellite, DSP-based modems is presented. The modulation considered is trellis-coded, differential phase-shift keying (DPSK) involving eight signal points. The Doppler phasor rather than the Doppler frequency is corrected as it leads to easy realization in DSP-based software. The Doppler phasor correction algorithm that is presented has a setup mode where the data are known and a data mode where the data are unknown. As such, it is intended for stream data or digital speech transmission. Both computer simulation and analytical techniques are used in the performance analysis

Keywords

Doppler effect; mobile radio systems; modems; phase shift keying; satellite relay systems; telecommunication channels; trellis codes; DPSK; DSP-based modems; Gaussian channel; TCM/DMPSK; computer simulation; differential phase-shift keying; digital speech transmission; performance analysis; shadowed mobile satellite channels; stream data; trellis coded modulation; two-stage Doppler-phasor correction algorithm; Computer simulation; Differential quadrature phase shift keying; Digital signal processing; Fading; Frequency; Modems; Performance analysis; Satellites; Signal processing algorithms; Speech;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.231953

Filename

231953