Communication device that transmits signals via a plurality of antennas and communication system

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United States of America Patent

PATENT NO 9793995
APP PUB NO 20170093495A1
SERIAL NO

15180676

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A communication device includes: a converter circuit configured to convert an optical signal that carries an oscillator signal of a radio frequency and transmission signals generated in a signal processing device into an electric signal; an extractor configured to extract the oscillator signal from the electric signal; a recovery circuit configured to recover the transmission signals from the electric signal; a radio frequency signal generator configured to generate radio frequency signals that respectively carry the transmission signals recovered by the recovery circuit using the oscillator signal; amplifiers respectively configured to amplify the radio frequency signals; antennas respectively configured to output the amplified radio frequency signals; a feedback circuit configured to generate a feedback signal from the amplified radio frequency signals; and a transmitter configured to convert the feedback signal into an optical signal and transmit it to the signal processing device.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
FUJITSU LIMITEDKAWASAKI18047

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Cited Art Landscape

Patent Info (Count) # Cites Year
 
NEC CORPORATION (1)
2008/0063,397 SYSTEM AND METHOD FOR PROVIDING WIRELESS OVER A PASSIVE OPTICAL NETWORK (PON) 85 2007
 
KABUSHIKI KAISHA TOSHIBA (1)
* 2006/0079,290 Radio communication system 61 2005
 
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE (1)
2011/0026,923 APPARATUS AND METHOD FOR OLT AND ONU FOR WAVELENGTH AGNOSTIC WAVELENGTH-DIVISION MULTIPLEXED PASSIVE OPTICAL NETWORKS 13 2007
* Cited By Examiner

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