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:
Aug. 07, 2012
Filed:
Jul. 02, 2008
Yihong Qi, Schaumburg, IL (US);
Feng Huang, Hoffman Estates, IL (US);
Azzedine Touzni, Algonquin, IL (US);
Yihong Qi, Schaumburg, IL (US);
Feng Huang, Hoffman Estates, IL (US);
Azzedine Touzni, Algonquin, IL (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
An apparatus and method is described that provide an efficient blind channel estimation approach for PSK and DPSK modulated multicarrier communication systems. With the requirement that the channel phase difference between any two adjacent carriers is smaller than one half of the minimum phase difference between two symbols of the PSK or DPSK constellation, a low-complexity deterministic approach to channel estimation is devised. This approach is highly effective, robust, and particularly useful for time varying channels with low AWGN noise.