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:
Apr. 19, 2011
Filed:
Feb. 21, 2001
Adaptive forward power control and adaptive reverse power control for spread-spectrum communications
Fatih M. Ozluturk, Port Washington, NY (US);
Gary R. Lomp, Centerport, NY (US);
John Kowalski, Vancouver, WA (US);
Fatih M. Ozluturk, Port Washington, NY (US);
Gary R. Lomp, Centerport, NY (US);
John Kowalski, Vancouver, WA (US);
InterDigital Technology Corporation, Wilmington, DE (US);
Abstract
A wireless code division multiple access (CDMA) communication system, including a base station (BS) and a subscriber unit (SU), uses adaptive forward power control (AFPC) and adaptive reverse power control (ARPC) to control the transmit power of forward and reverse link radio frequency (RF) channel signals, respectively. Automatic gain control (AGC) signals are produced to maintain the level of forward and reverse CDMA signals at a near constant level. The CDMA signals are despread to produce first and second despread signals. The first and second despread signals are used to produce a first error signal e. A second error signal eis produced based on the AGC signals. Combined error signals are formed based on the first error signal eand the second error signal e. The combined error signals are hard limited to form adaptive power control (APC) bits used to control the level of the forward and reverse link RF channel signals.