Technique for simultaneous communications of analog frequency-mo

Details Technique for simultaneous communications of analog frequency-mo Technique for simultaneous communications of analog frequency-mo

1996-11-12

1999-11-23

Ghebretinsae, Temesghen

Pulse or digital communications

Apparatus convertible to analog

375316, 370480, H04L 2500

Patent

active

059913347

ABSTRACT:
In a system for simulcasting a digitally modulated signal and an analog FM signal over the same FM frequency band, the composite signal is received and applied to a conventional FM receiver, and a digital receiver in accordance with the invention. An extended Kalman filter is employed in the digital receiver to estimate the analog FM signal based on a version of the recovered FM signal from the FM receiver, and a discrete version of the composite signal whose spectrum has been translated and is at an intermediate carrier frequency. The estimated FM signal, which is in a discrete form, is subtracted from the discrete version of the composite signal. The resulting signal, which is an estimated version of the digitally modulated signal, is demodulated to recover the digital data as transmitted.

REFERENCES:
patent: 4523311 (1985-06-01), Lee et al.
patent: 4859958 (1989-08-01), Myers
patent: 5105435 (1992-04-01), Stilwell
patent: 5136612 (1992-08-01), Bi
patent: 5218619 (1993-06-01), Dent
patent: 5465396 (1995-11-01), Hunsinger et al.
patent: 5483686 (1996-01-01), Saka et al.
"FM-2 System Description", USA Digital Radio, 1990-1995.
N. Jayant, "The AT&T DAR System Update", NAB 1994 Broadcasting Engineering Conference Proceedings, pp. 389-398.
J. Bingham, "AT&T/AMATI DAR System: An Update", NAB 1994 Broadcast Engineering Conference Proceedings, pp. 399-403.
Haykin, S., Adaptive Filter Theory. Englewood Cliffs, NJ: Prentice-Hall, p. 281, 1986.

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