Pulse or digital communications – Synchronizers – Frequency or phase control using synchronizing signal
Reexamination Certificate
2008-04-17
2011-12-20
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Synchronizers
Frequency or phase control using synchronizing signal
C375S359000, C375S296000, C375S356000, C455S067130
Reexamination Certificate
active
08081727
ABSTRACT:
A radio communication apparatus connected to a device including a digital signal processing unit generating a clock signal, the apparatus includes an acquisition unit acquiring frequency information concerning the clock signal from the digital signal processing unit, a first measurement unit measuring a signal power in a first frequency band, a comparison unit comparing the signal power with a threshold, a first selection unit selecting, from the first frequency band, a second frequency band necessary for data communication, a bandwidth of the first frequency band whose signal power is lower than the threshold being more than a bandwidth of the second frequency band, a second selection unit selecting an optimum communication scheme from a plurality of communication schemes of the data communication according to the frequency information, and a communication unit using the optimum communication scheme to perform the data communication in the second frequency band.
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Murakami, T. et al., “Interference potential of PC noise on MB-OFDM UWB systems”, Dec. 2006, IEEE Communication Letters, vol. 10, p. 804-806.
Ahn Sung
Kabushiki Kaisha Toshiba
Liu Shuwang
Ohlandt Greeley Ruggiero & Perle L.L.P.
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