H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 1/16 (2006.01) G01S 1/00 (2006.01) G01S 1/04 (2006.01) H04L 27/22 (2006.01)
Patent
CA 2141224
A transmitter (12) broadcasts a PN encoded message (16). A receiver (14) includes a SAW correlator (38) configured to autocorrelate with the PN sequence used in the broadcast signal. A preamble of the message (16) conveys two successive bits (18) that are each encoded with the PN sequence. After the correlator (38) has been preloaded with the PN sequence from the first bit (18), its non-correlation output exhibits reduced amplitude time sidelobes. A timing comparison circuit (60) compares a correlation signal (46) with a timing threshold (72). The timing threshold (72) is established at a very low level to minimize the influence of multipath. False triggering on noise is prevented by disabling the timing comparison circuit (60) until after the first bit {18). At this point in time the correlator (38) has been preloaded with its PN sequence, is again being loaded with its PN sequence, and outputs reduced amplitude time sidelobes.
Anderson Neal Robert
Fox Thomas Michael
Heeren Julius Anthony
Gowling Lafleur Henderson Llp
Motorola Inc.
LandOfFree
System and method for identifying an arrival time of a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for identifying an arrival time of a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for identifying an arrival time of a... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1494427