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:
Jul. 22, 2014
Filed:
May. 20, 2010
Junling Zhang, Shenzhen, CN;
Junling Zhang, Shenzhen, CN;
ZTE Corporation, Shenzhen, Guangdong Province, CN;
Abstract
The present invention discloses a method and apparatus for performing noise estimation in an OFDM system. The method comprises: a channel estimation coefficient generation module generating a channel estimation coefficient w, where k is an integer between and Nis a positive integer greater than 1, 0<w<1; a channel estimation module calculating a channel estimation based on a received signal on a subcarrier of an OFDM symbol and the channel estimation coefficient w; a noise estimation calculation module calculating a noise estimation based on the received signal on the subcarrier of the orthogonal frequency division multiplexing symbol and the channel estimation; a correction factor calculation module calculating a correction factor β based on the channel estimation coefficient wgenerated by the channel estimation coefficient generation module; and a correction module correcting the noise estimation output by the noise estimation calculation module based on the correction factor β.