24/06/2005 - Controller General of Patents, Designs, and Trade Marks

(21) Application No.225/DEL/ 1997 A (22) Date of filing of Application: 29/01/1997
(54) Title of the invention: “A RECEIVER AND TRANSMITTER FOR
RECEIVING AND TRANSMITTING
INFORMATION IN A SPREAD SPECTRUM
SIGNAL.”
(51) International Classification 7 : H04B 1/707
(30) Priority Data:
(31) Document No.: 08/593,758, 08/606,906
(32) Date: 29/01/1996, 26/02/1996
(33) Name of convention country: USA.
(66) Filed U/s 5(2): NIL
(61) Patent of addition to application No.: NA
(62) Filed on: NA
(63) Divisional to Application No.: NIL
(64) Filed on: NA
Total No Of Page: 21
(57) Abstract:
(71) Name of the applicant:
MOTOROLA, INC.,
Address of the Applicant:
State Of Delaware, United States Of America,
Of 1303 East Algonquin Road, Schaumburg,
Illinois 60196. United States Of America.
(72) Name of the Inventor:
ANDREW MURRAY SLONNEGER
Marco Antonio Mayor
Carl Myron Willis
An apparatus at a transmitter (800) initializes (902) pseudonoizes (PN) sequence generators
(302,306,320) to a predetermined initial state and thereafter generates (906) time-synchronixed PN
sequences. A spread spectrum signal is then transmitted (908) by utilizing the PN sequences to
encode information. At a receiver (600,700) a predetermined one of the PN sequences is acquired
and tracked (1002), and the predetermined one of the PN sequences is acquired and tracked (1004).
A PN sequence generator (602,714,772,730) of the receiver is adjusted (1006,1014) to generate a
selected PN sequence time-synchronized with the predetermined one, and a corresponding one of
the PN sequences is despread (1008) by utilizing the selected PN sequence to decode the
information.
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