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. 14, 2002
Filed:
Apr. 30, 1998
Song Wu, Plano, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A method of modem communications between first and second modems ( ) over a communications facility (TWP). The method operates the first modem ( ) to issue communications to the second modem ( ) over the communications facility. These communications comprise a plurality of subchannel signals (n). The method also operates the second modem to perform various steps. In one of these steps, the second modem converts ( ) the communications from time domain communications to frequency domain communications, where the frequency domain communications signals comprise a plurality of subchannel signals. Each of these plurality of subchannel signals comprises an amplitude portion and a phase portion. In another of these steps, the second modem equalizes ( ) the amplitude portion of each of the plurality of subchannel signals using fixed gain factors (GE(n))corresponding to each of the plurality of subchannel signals. In still another of these steps, the second modem equalizes ( ) the phase portion of each of the plurality of subchannel signals using adjustable phase factors (PE(n)) corresponding to each of the plurality of subchannel signals. The adjustable phase factors are adjusted in response to previous communications from the first modem to the second modem.