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:
Feb. 10, 2015
Filed:
Jan. 22, 2013
Marvell International Ltd., Hamilton, BM;
Arul Durai Murugan Palanivelu, Sunnyvale, CA (US);
Sudhir Srinivasa, Sunnyvale, CA (US);
Hongyuan Zhang, Fremont, CA (US);
Rohit U. Nabar, Sunnyvale, CA (US);
Marvell International Ltd., Hamilton, BM;
Abstract
In a method for detecting a packet type of an orthogonal frequency division multiplexing (OFDM) data unit detected in a communication channel, a first estimate and a second estimate of a transmitted symbol are determined for each of at least some of a plurality of OFDM tones in an OFDM symbol of the data unit. A first distance and a second distance are determined between a received symbol and, respectively, the first estimate and the second estimate scaled by a channel response estimate corresponding to the OFDM tone. A first total distance is determined based on a mathematical summation of the first distances over the plurality of OFDM tones. A second total distance is determined based on a mathematical summation of the second distances over the plurality of OFDM tones. The packet type is determined based at least on the first total distance and the second total distance.