Pulse or digital communications – Systems using alternating or pulsating current – Angle modulation
Patent
1997-02-18
1999-06-08
Chin, Stephen
Pulse or digital communications
Systems using alternating or pulsating current
Angle modulation
375283, 375330, 375329, 375304, 375345, H04L 2718, H04L 2722, H03D 322
Patent
active
059109688
ABSTRACT:
A digital communication system having a transmitter and a receiver. The receiver transmits a radio-frequency (RF) signal that is continuous phase modulated by digital data. The receiver having a converter, a differential detector, and a sequential decoder. The receiver receives the RF signal. The RF signal is converted into a baseband signal by the converter. The baseband signal is received by the differential detector wherein the continuous phase modulation of the baseband signal is detected. The detected signal is received and the digital data is decoded by the sequential decoder. The sequential decoder has a Viterbi decoder to compensate for intersymbol interference caused by the differential detector. The Viterbi decoder performs reduced Viterbi decoding utilizing a feedback loop (FB) for reducing computing inaccuracies due to the reduction of the number of trellis states.
REFERENCES:
patent: 5440267 (1995-08-01), Tsuda et al.
patent: 5581568 (1996-12-01), Togami
patent: 5588027 (1996-12-01), Lim
patent: 5706313 (1998-01-01), Blasiak et al.
patent: 5761243 (1998-06-01), Russell et al.
"Reduced State Sequence Detection of Partial Response Continuous Phase Modulation", A. Swensson, IEE Proceedings-1, vol. 138, No. 4, 1991, pp. 256-268.
Brajal Americo
Casals Castane Josep
Chouly Antoine
Chin Stephen
Deppe Betsy L.
Thorne Gregory L.
U.S. Philips Corporation
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