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. 16, 2009
Filed:
Mar. 02, 2007
Kuang-yu Yen, Tai-Chung, TW;
Meng-han Hsieh, Hsinchu, TW;
Hou-wei Lin, Taipei, TW;
Shieh-hsing Kuo, Danshuei Township, Taipei County, TW;
Kuang-Yu Yen, Tai-Chung, TW;
Meng-Han Hsieh, Hsinchu, TW;
Hou-Wei Lin, Taipei, TW;
Shieh-Hsing Kuo, Danshuei Township, Taipei County, TW;
Realtek Semiconductor Corp., Science Park, HsinChu, TW;
Abstract
The apparatus for communication channel estimation device of the present invention includes: a frequency response square computing circuit, to generate a first frequency response corresponding to a first frequency and a second frequency response corresponding to a second frequency according to a input signal, and to square the first and the second frequency response; and an estimating circuit, to estimate a channel length according to the squares of the first frequency and the second frequency response. Wherein the input signal is transmitted in a symbol rate and the first frequency and the second frequency are 1/M and 1/N times of the symbol rate respectively, wherein M and N are in the order of 2.