Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2006-05-30
2006-05-30
Bocure, Tesfaldet (Department: 2631)
Pulse or digital communications
Receivers
Interference or noise reduction
C375S148000, C455S137000
Reexamination Certificate
active
07054397
ABSTRACT:
A mobile communication system has a plurality of mobile stations and a base station which includes a plurality of antennas, a frequency shift portion, a combining portion, a receiving portion and a signal processing portion. The antenna receives radio waves transmitted by the mobile stations. The frequency shift portion shifts the received signal with a frequency corresponding to each of the antennas. The combining portion determines the shifted signal as a combining signal. The receiving portion converts the combining signal in frequency to make an intermediate frequency signal, and converts the intermediate frequency signal into a digital signal. The signal processing portion includes spreading demodulation means judging means, and fading compensation means.
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Bocure Tesfaldet
NEC Corporation
Sughrue Mion Zinn Macpeak & Seas
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