Title :
Burst DSP demodulator for low Eb/N0 operation
Author :
Uchishima, M. ; Tozawa, Y. ; Miyo, T. ; Takenaka, S.
Author_Institution :
Fujitsu Ltd., Kawasaki, Japan
Abstract :
The authors describe a receive filter modification that improves carrier and symbol timing recovery in a burst DSP (digital signal processing) QPSK (quadrature phase shift keying) demodulator for satellite communications. The experimental DSP demodulator has a low unique word miss probability (Pmiss) and cycle-skipping-rate at low E b/N0 (3 dB or less). The S/N (signal-to-noise ratio) of the carrier recovery is increased by about 1 dB and the S/N of the symbol timing recovery is increased by at least 3 dB. Pmiss is improved by a factor of 100 over that of a conventional DSP demodulator
Keywords :
demodulators; digital filters; phase shift keying; satellite relay systems; signal processing; QPSK; burst DSP demodulator; carrier recovery; cycle-skipping-rate; quadrature phase shift keying; receive filter; satellite communications; signal-to-noise ratio; symbol timing recovery; word miss probability; Binary phase shift keying; Chromium; Clocks; Decoding; Demodulation; Digital signal processing; Filters; Frequency synchronization; Quadrature phase shift keying; Timing;
Conference_Titel :
Communications, 1991. ICC '91, Conference Record. IEEE International Conference on
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-0006-8
DOI :
10.1109/ICC.1991.162364
