Pulse or digital communications – Repeaters – Testing
Patent
1991-06-17
1993-01-12
Cangialosi, Salvatore
Pulse or digital communications
Repeaters
Testing
H04L 2730
Patent
active
051795728
ABSTRACT:
A spread-spectrum-conference-calling receiver, for use over a communications channel. At each of a plurality of spread-spectrum transmitters, a transmitter-generic-chip-code generator generates a generic-chip-code signal and a transmitter-message-chip-code generator generates a message-chip-code signal. An EXCLUSIVE-OR gate spread-spectrum processes message data with the message-chip-code signal to generate a spread-spectrum signal. The combiner combines the generic-chip-code signal and the spread-spectrum-processed signal. A plurality of receiver-generic-chip-code generators generate a plurality of replicas of the generic-chip-code signal. Each receiver-generic mixer recovers a carrier signal from one of the plurality of received spread-spectrum-communications signals. A plurality of receiver-message-chip-code generators generate a plurality of replica of the message-chip-code signals. A plurality of receiver-message mixers despread one of the plurality of received spread-spectrum-communications signal as a modulated-data signal. Tracking and acquistion circuits use the recovered carrier signal for synchronizing the replicas of the generic-chip-code signals to the recovered carrier signals, respectively. An envelope detector demodulates the modulated-data signal as a demodulated signal.
REFERENCES:
patent: 4425642 (1984-01-01), Moses et al.
patent: 4494238 (1985-01-01), Groth, Jr.
patent: 4942591 (1990-07-01), Nease et al.
patent: 5022046 (1991-06-01), Morrow, Jr.
patent: 5031173 (1991-07-01), Short et al.
Cangialosi Salvatore
SCS Mobilecom, Inc.
LandOfFree
Spread spectrum conference calling system and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Spread spectrum conference calling system and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spread spectrum conference calling system and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1224909