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:
Oct. 18, 2011
Filed:
Mar. 07, 2008
Xin Wang, Beijing, CN;
Yuuta Nakaya, Kawasaki, JP;
Syuusaku Suzuki, Yokohama, JP;
Michiharu Nakamura, Kawasaki, JP;
Jianmin Zhou, Beijing, CN;
Hiroyuki Hayashi, Beijing, CN;
Xin Wang, Beijing, CN;
Yuuta Nakaya, Kawasaki, JP;
Syuusaku Suzuki, Yokohama, JP;
Michiharu Nakamura, Kawasaki, JP;
JianMin Zhou, Beijing, CN;
Hiroyuki Hayashi, Beijing, CN;
Fujitsu Limited, Kawasaki, JP;
Abstract
The present invention relates to an apparatus and method of frame synchronization in broad band wireless communication systems. In an apparatus of frame synchronization in a mobile station, a time variant phase rotation compensator eliminates time variant phase rotation carried in received signals by conjugated multiplication between adjacent signal samples. Then, the processed signal is fed into a delay correlator to calculate a plurality of correlations between two successive frames. A local power calculator acquires an average power of several symbols centered on delayed correlation values. A normalizer normalizes the delayed correlation values with a local average power corresponding to the delayed correlation values. A maximum value detector selects the maximum value from normalized correlation values to trigger frame synchronizing and timing signals.