The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 17, 2002
Filed:
Jun. 10, 1998
Ronald D. McCallister, Scottsdale, AZ (US);
Bruce A. Cochran, Mesa, AZ (US);
Eric M. Brombaugh, Mesa, AZ (US);
Sicom, Inc., Scottsdale, AZ (US);
Abstract
A time division multiple access digital communications system ( ) is provided. The system ( ) has a base station ( ) configured to generate a receive baud clock ( ) and has a receiver ( ) and a transmitter ( ). The system also has a subscriber unit ( ) configured to generate a transmit baud clock ( ), and has a transmitter ( ) and a receiver ( ). The subscriber unit transmitter ( ) is configured to transmit a reverse channel signal ( ) that incorporates the transmit baud clock ( ) as a component thereof. The base station receiver ( ) is configured to receive the reverse channel signal ( ) from the subscriber unit ( ) and produce a phase-error signal (&mgr;′) in response to a phase difference between the transmit baud clock ( ) and the receive baud clock ( ). The base station transmitter ( ) is configured to transmit the phase-error signal (&mgr;′) to the subscriber unit receiver ( ). The subscriber unit transmitter ( ) contains an interpolator ( ) configured to adjust the phase of the transmit baud clock ( ) in response to the phase-error signal.