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:
Mar. 27, 2012
Filed:
Dec. 23, 2009
Applicants:
Koji Matsuyama, Kawasaki, JP;
Masahiko Shimizu, Kawasaki, JP;
Takeshi Inoue, Yokohama, JP;
Inventors:
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/707 (2011.01);
U.S. Cl.
CPC ...
Abstract
An A/D converted and inputted signal is stored in a memory. A sliding correlator sequentially reads the signal stored in the memory and despreads this signal. A despreading timing is adjusted and then the candidate for a despreading code is outputted from a code generation circuit. The despreading code outputted at a predetermined timing is used for obtaining a correlation value of signals outputted from the memory, using the sliding correlator. Thus, by storing signals in the memory, fluctuation of a correlation value caused by fading does not occur while specifying a code or detecting a despreading timing.