Signal shaping in digital QAM systems

Author

Maqusi, Mohammad ; Abu-Shammeh, Mahmoud I.

Author_Institution

Dept. of Electr. Eng., Jordan Univ., Amman, Jordan

Volume

2

fYear

1994

fDate

3-5 Aug 1994

Firstpage

1014

Abstract

In this paper we investigate certain aspects of signal shaping in digital QAM systems. In particular, the spectral behaviour of such systems is investigated with reference to rectangular, sine-pulse, and T-pulse shapes. Partial response signalling is also applied to QAM systems. Consequently, spectral efficiency (bps/Hz) performance is considered, and the fractional out-of-band energy contents are computed. In addition error probability for transmission of such signals over typical linear and nonlinear Volterra channels is investigated

Keywords

digital communication; digital signals; error statistics; partial response channels; quadrature amplitude modulation; spectral analysis; T-pulse shape; digital QAM systems; error probability; fractional out-of-band energy contents; linear Volterra channels; nonlinear Volterra channels; partial response signalling; rectangular pulse shape; signal shaping; sine-pulse shape; spectral behaviour; spectral efficiency performance; AWGN; Amplitude modulation; Bandwidth; Baseband; Constellation diagram; Error probability; Ground penetrating radar; Pulse shaping methods; Quadrature amplitude modulation; Shape;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1994., Proceedings of the 37th Midwest Symposium on

Conference_Location

Lafayette, LA

Print_ISBN

0-7803-2428-5

Type

conf

DOI

10.1109/MWSCAS.1994.518984

Filename

518984