Coded PSK signals over a nonlinear channel in a TDMA environment

Author

Talal, Mohammed

Author_Institution

HIAST, Damascus, Syria

fYear

2004

fDate

19-23 April 2004

Firstpage

277

Lastpage

278

Abstract

The paper studies an improved scheme of a digital modem that transmits a convolutionally encoded eight-phase-shift keyed (C8PSK) signal over a nonlinear satellite channel in a TDMA environment. The results of computer simulation tests showing the effects of band-limiting, nonlinear distortion introduced by the HPA and the detection process at the receiver on the tolerance of the modem to AWGN are presented. The study also shows the performance improvements gained by using a baseband linearizer at the input to the modulator with HPA characteristics, and with different levels of output backoff in the HPA at the transmitter.

Keywords

AWGN channels; convolutional codes; modems; modulation coding; phase shift keying; power amplifiers; time division multiple access; AWGN; C8PSK; HPA; TDMA; baseband linearizer; coded PSK signals; convolutional encoding; detection process; digital modem; eight-phase-shift keyed signal; high power amplifier; nonlinear channel; nonlinear satellite channel; AWGN; Computer simulation; Convolution; Convolutional codes; Modems; Nonlinear distortion; Phase shift keying; Satellites; Testing; Time division multiple access;

fLanguage

English

Publisher

ieee

Conference_Titel

Information and Communication Technologies: From Theory to Applications, 2004. Proceedings. 2004 International Conference on

Print_ISBN

0-7803-8482-2

Type

conf

DOI

10.1109/ICTTA.2004.1307734

Filename

1307734