Nonlinear digital phase estimation for mobile communications

Author

Seymour, James P. ; Fitz, Michael P.

Author_Institution

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

fYear

1992

Firstpage

194

Lastpage

198

Abstract

The nonlinear digital carrier synchronization structure is a coherent demodulation technique that has many advantages for mobile communications. The nonlinear digital synchronizer is investigated in the presence of time varying fading for BPSK, QPSK, and π/4-QPSK modulations. This paper addresses the design of optimal unconstrained smoothing filters for the nonlinear synchronizer structure. An approximate bit error probability analysis demonstrates that performance is quite near ideal and that no error floor exists in time varying fading

Keywords

demodulation; digital filters; fading; mobile radio systems; parameter estimation; phase shift keying; probability; synchronisation; π/4-QPSK; BPSK; QPSK; approximate analysis; bit error probability; coherent demodulation; mobile communications; nonlinear digital carrier synchronization; nonlinear digital phase estimation; optimal unconstrained smoothing filters; time varying fading; Binary phase shift keying; Demodulation; Digital modulation; Error probability; Fading; Filters; Mobile communication; Phase estimation; Quadrature phase shift keying; Smoothing methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 1992. Proceedings, PIMRC '92., Third IEEE International Symposium on

Conference_Location

Boston, MA

Print_ISBN

0-7803-0841-7

Type

conf

DOI

10.1109/PIMRC.1992.279937

Filename

279937