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:
May. 23, 2006
Filed:
Jul. 24, 2002
Alberto Ginesi, Noordwijk, NL;
Scott Mcclennon, Ottawa, CA;
Alberto Ginesi, Noordwijk, NL;
Scott McClennon, Ottawa, CA;
Ciena Corporation, Linthicum, MD (US);
Abstract
Method of reducing transmission power across a loop in a discrete multitone communication system. A first signal to noise ratio (SNR) is estimated for a signal transmitted across the loop. A second SNR is estimated for a signal across the loop, the second SNR signal being estimated exclusive of a predetermined portion of the first SNR. A power cutback scaling factor is determined in accordance with the first SNR, the second SNR, and a predefined maximum SNR degradation amount. The transmission power is scaled in accordance with said scaling factor for reducing said transmission power. In such a manner, fine gains are computed such that the transmit power is reduced without significantly affecting the achieved data rate.