Apparatus and method for signal identification

Pulse or digital communications – Repeaters – Testing

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

375207, 375232, 375367, 370335, 370342, 370441, 370527, H04B 1500, H04K 100, H04L 2730

Patent

active

056967896

ABSTRACT:
A novel code division multiple access (CDMA) system and apparatus is provided which permits a plurality of encoded modulated data messages to be transmitted simultaneously on the same channel in one frequency band as a composite CDMA signal. An identification signal is generated and spread by a spreading signal having a duty cycle less than fifty percent to produce a combined signal which is transmitted to a receiver having a tapped delay with a plurality of taps each of which produce a replica of the received combined signal delayed by an odd multiple of the duty cycle of the spreading signal. Each of the replica signals is multiplied by a predetermined weighted value to produce weighted delayed signals and a controller responsive to the received combined signal, is employed for controlling individual weighted delayed signals which are then combined to suppress the spreading signal leaving the identification signal.

REFERENCES:
patent: 5031173 (1991-07-01), Short et al.
patent: 5231400 (1993-07-01), Mouldin et al.
patent: 5594754 (1997-01-01), Dohi et al.
patent: 5596570 (1997-01-01), Soliman

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Apparatus and method for signal identification does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for signal identification, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for signal identification will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1613899

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.