FREQUENCY OFFSET ESTIMATING METHOD AND FREQUENCY OFFSET CORRECTING APPARATUS UTILIZING THE SAME

PROBLEM TO BE SOLVED: To correct frequency offset of a signal received by a plurality of antennas. SOLUTION: A frequency offset correcting section 110 estimates frequency offset in a preamble section, corrects a digital reception signal 300 with the estimated initial frequency offset, and further, c...

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Bibliographic Details
Main Authors HIGASHIDA NORIO, NAKAO SHIYOUGO, TANAKA YASUHIRO
Format Patent
LanguageEnglish
Published 14.07.2005
Edition7
Subjects
ANTENNAS, i.e. RADIO AERIALS
BASIC ELECTRIC ELEMENTS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:PROBLEM TO BE SOLVED: To correct frequency offset of a signal received by a plurality of antennas. SOLUTION: A frequency offset correcting section 110 estimates frequency offset in a preamble section, corrects a digital reception signal 300 with the estimated initial frequency offset, and further, corrects a below-mentioned residual frequency signal 324. A reception weight vector calculating section 68 calculates a reception vector weight signal 312 by an LMS algorithm. Also, the section 68 estimates frequency offset included in a signal 326 received after correction on the basis of an error vector or the signal 312 which are derived by the LMS algorithm, and outputs it as the signal 324. A multiplying section 62 weights the signal 326 with the signal 312, an adding section 64 adds the output of the section 62, and a composite signal 304 is outputted. COPYRIGHT: (C)2005,JPO&NCIPI
Bibliography:Application Number: JP20030429301