Communication device, communication system, position detection method and program
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United States of America Patent
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Apr 17, 2012
Grant Date -
Jul 8, 2010
app pub date -
Dec 23, 2009
filing date -
Jan 8, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
There is provided a communication device including: a receiving unit that receives radio signals transmitted from another communication device using a plurality of transmitting antennas by a plurality of receiving antennas; an estimation unit that estimates a range of a position where said another communication device possibly exists based on a phase of each radio signal received by the receiving unit and antenna spacing between the transmitting antennas; and a position determination unit that determines an existing position of said another communication device within the range estimated by the estimation unit.
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