Title :
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
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;
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
DOI :
10.1109/PIMRC.1992.279937
