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:
Nov. 19, 2013
Filed:
Apr. 20, 2010
Wei Zha, Germantown, MD (US);
Amir Soltanian, Potomac, MD (US);
Yuelun Guo, Germantown, MD (US);
Wei LU, Bethesda, MD (US);
Wei Zha, Germantown, MD (US);
Amir Soltanian, Potomac, MD (US);
Yuelun Guo, Germantown, MD (US);
Wei Lu, Bethesda, MD (US);
PCTEL, Inc., Bloomingdale, IL (US);
Abstract
A system and method for SSS detection under carrier frequency offset in an orthogonal frequency-division multiple access (OFDMA) downlink channel. A processor receives a signal sample that includes a transmission on a primary synchronization signal (PSS) and a transmission on a one secondary synchronization signal (SSS). The processor determines a correlation 'P' of a first symbol transmitted in the PSS of the signal sample to a first known symbol at each time 't' of time increments k of the signal sample and a correlation “S” of a second symbol transmitted in the a SSS to a second known symbol at each time t-.5/7 msecs. The processor receives a candidate phase rotation of θfrom a set of “i” candidates and determines a correlation “Cmax” over the time increments k representing a maximum amplitude of a combined correlation of S and P, with P rotated by θ. The processor determines the cell identifier from the first and second known symbols that produced S and P of C max and an estimation of the frequency offset between a transmitter of the signal sample and a receiver of the signal sample.