Digital communication signalling system

Details Digital communication signalling system Digital communication signalling system

1991-01-25

1993-05-18

Kuntz, Curtis

Pulse or digital communications

Spread spectrum

Direct sequence

370 76, 370121, 455127, H04L 700

Patent

active

052127150

ABSTRACT:
In frequency-hopping spread-spectrum systems, it is necessary to maintain frequency and bit synchronization (sync) between the transmitter and receiver in order to maintain quality data recovery at the receiver. A protocol is described which includes a synthesizer lock field (109) to allow frequency sync, a clock sync field (123) to achieve quick clock sync, and a data sync field (125) to provide data sync. Other fields are provided in the protocol to allow both voice (141) and data (127) transmissions, inband signalling (139), and error correction (143). A method and apparatus, driven by a microprocessor (303) and ASIC (301) combination, are described that generate and transmit this protocol.

REFERENCES:
patent: 3753228 (1973-08-01), Nickolas et al.
patent: 4636791 (1987-01-01), Burke et al.
patent: 4692945 (1987-09-01), Zdunek
patent: 4701944 (1987-10-01), Howard et al.
patent: 4723264 (1988-02-01), Sasuta et al.
patent: 4825193 (1989-04-01), Siwiak et al.
patent: 4831647 (1989-05-01), D'Avello et al.
patent: 4992753 (1991-02-01), Jenson et al.

Affiliated with

Also associated with

Rating

Digital communication signalling system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital communication signalling system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital communication signalling system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-809259