To provide a leak wave compensation device for compensating for a component of a transmission wave superimposed on a reception wave in a duplexer provided in a communication device or a transmission device to which a frequency division duplex system is applied, capable of maintaining a high transmission quality by flexibly adapting to a wide occupation range, variety of modulation modes, and multi connection modes, without greatly complexing the structure.
There is provided a leak wave compensation device for compensating for a component of a transmission wave superimposed on a reception wave in a duplexer used in frequency division duplex. The leak wave compensation device comprises: wave filtering means for performing a predetermined wave filtering process on a transmission wave given to the duplexer; compensation means for compensating for a component of the transmission wave by calculating a difference between the reception wave and a result of the wave filtering process; and control means for updating wave filtering characteristics of the wave filtering means on the basis of adaptive control or automatic control for reducing a product of the difference and an instantaneous value of the reception wave.
NAGAYASU MASATOSHI
FUKINO KOJI
KOSAKA NAOHIRO
| JP2010507337A | 2010-03-04 |
Katsuhiro Imashita
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