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. 11, 2015
Filed:
Jan. 11, 2012
Xiumei Yang, Shanghai, CN;
Yong Xiong, Shanghai, CN;
Guoqing Jia, Shanghai, CN;
Lei Zhu, Shanghai, CN;
Shupei Lei, Shanghai, CN;
Zhengkun Yi, Shanghai, CN;
Xiumei Yang, Shanghai, CN;
Yong Xiong, Shanghai, CN;
Guoqing Jia, Shanghai, CN;
Lei Zhu, Shanghai, CN;
Shupei Lei, Shanghai, CN;
Zhengkun Yi, Shanghai, CN;
SHANGHAI RESEARCH CENTRE FOR WIRELESS COMMUNICATION, Changning Distict, Shanghai, CN;
Abstract
A robust downlink timing synchronization method for reducing the influence of initial frequency offset and ensuring the timing synchronization in a low signal-to-noise ratio interval in an LTE system, which includes: step 1: a receiving terminal continuously storing time domain signal sequences of M PSS transmission periods; step 2: performing narrowband filtering on the time domain signal sequences of the M PSS transmission periods; step 3: performing down-sampling on data obtained after the filtering; step 4: performing sliding differential mirror correlation on the down-sampling data of an mPSS transmission period to obtain a correlation value of an iinstant; step 5: superposing correlation results to obtain a superposition result; and step 6: determining whether the superposition result has an obvious peak interval; if yes, completing capturing the primary synchronization signal, and obtaining timing information according to a position of a maximum correlation peak; otherwise, returning to step 1.