Nonlinear digital carrier synchronization for Rician fading channels

Author

Fitz, Michael P.

Author_Institution

Sch. of Electr. Eng., Purdue Univ., West Lafayette, IN, USA

fYear

1990

fDate

2-5 Dec 1990

Firstpage

623

Abstract

The nonlinear digital carrier synchronizer is proposed for phase estimation on the fading channel. This architecture´s noncausal structure, efficient digital implementation, hangup-free operation, and near-optimum performance at low signal-to-noise ratio (SNR) are postulated to produce near-ideal bit error probability (BEP) performance in fading channels. A method of evaluating the BEP of a digital quadrature PSK. (QPSK) demodulator in the presence of a noisy phase reference and Rician fading is presented. This result is used to obtain accurate performance approximations for the nonlinear digital carrier synchronization architecture

Keywords

carrier communication; demodulators; digital radio systems; fading; phase shift keying; synchronisation; telecommunication channels; QPSK modulation; Rician fading channels; SNR; bit error probability; digital quadrature PSK; noisy phase reference; noncausal architecture; nonlinear digital carrier synchronization; nonlinear digital carrier synchronizer; performance approximations; phase estimation; signal-to-noise ratio; Demodulation; Error probability; Fading; Phase estimation; Phase locked loops; Quadrature phase shift keying; Rician channels; Robustness; Smoothing methods; Telephony;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1990, and Exhibition. 'Communications: Connecting the Future', GLOBECOM '90., IEEE

Conference_Location

San Diego, CA

Print_ISBN

0-87942-632-2

Type

conf

DOI

10.1109/GLOCOM.1990.116584

Filename

116584