Title :
Nonlinear digital carrier synchronization for Rician fading channels
Author :
Fitz, Michael P.
Author_Institution :
Sch. of Electr. Eng., Purdue Univ., West Lafayette, IN, USA
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;
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
DOI :
10.1109/GLOCOM.1990.116584
