Title :
DCF reverse modulation type carrier recovery circuit for Rician fading channel
Author :
Sakai, T. ; Kobayashi, K. ; Kubota, S. ; Morikura, M. ; Kato, S.
Author_Institution :
NTT Radio Commun. Syst. Labs., Tokyo, Japan
Abstract :
A carrier recovery circuit, the DCF (dual carrier filter) reverse modulation type carrier recovery circuit, is proposed. The circuit performs both a low cycle skipping rate and satisfactory phase tracking characteristics in fast (fDT≃10-2 ) Rician fading channels by employing both narrow and wide bandwidth filters for the DCF reverse modulation carrier recovery circuit with the additional filter for recovered carrier S/N improvement. The bit error probability (Pe) performances of QPSK coherent detection using the proposed DCF carrier recovery circuit are evaluated by computer simulation. An improvement of 1.5 dB in required Es/N0 at Pe=104 (after Viterbi decoding (R=7/8, K=7), C/M=10 dB, f DT=1.67×10-2, interleaving size=64×64) is achieved compared with conventional coherent detection
Keywords :
fading; phase shift keying; radiofrequency filters; signal detection; telecommunication channels; QPSK coherent detection; Rician fading channel; Viterbi decoding; bit error probability; carrier S/N; carrier recovery circuit; computer simulation; cycle skipping rate; dual carrier filter; interleaving size; mobile satellite communication; narrow bandwidth filters; phase tracking; reverse modulation; wide bandwidth filters; Bandwidth; Circuits; Computer simulation; Error probability; Filters; Performance evaluation; Phase modulation; Quadrature phase shift keying; Rician channels; Viterbi algorithm;
Conference_Titel :
Global Telecommunications Conference, 1991. GLOBECOM '91. 'Countdown to the New Millennium. Featuring a Mini-Theme on: Personal Communications Services
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-87942-697-7
DOI :
10.1109/GLOCOM.1991.188592
