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:
Jun. 03, 2003
Filed:
Jun. 26, 2000
Allen Le Roy Limberg, Vienna, VA (US);
Samsung Electronics Co., Ltd., Kyungki-do, KR;
Abstract
Adaptive passband equalization filtering comprises in addition to a non-iterative portion, an iterative filtering portion to suppress longer-delayed post-ghosts. This iterative filtering portion differs from that in previous adaptive passband equalization filtering, in which the estimates of transmitted symbols are converted to VSB signal and the feedback signal for the iterative filtering is generated as a weighted summation of successive samples of the VSB signal. Instead, a weighted summation of successive estimates of transmitted symbols is converted to VSB signal to supply the feedback signal for the iterative filtering. Since the conversion to VSB signal is done immediately before the feedback signal is combined with the feedforward signal to generate the passband equalization filtering response that is demodulated, the carrier wave of the feedback signal is currently determined, rather than having been determined in the past. This avoids “ghost iteration with inversion” in the adaptive passband equalization filtering response.