Method and device for receiving frequency-shift keying signal
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United States of America Patent
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Nov 21, 2017
Grant Date -
Jul 6, 2017
app pub date -
Dec 23, 2016
filing date -
Dec 30, 2015
priority date (Note) -
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Abstract
Disclosed are a method and device for receiving a frequency-shift keying signal. The device for receiving a frequency-shift keying signal includes a front-end circuit, complex differential discriminators, and a recovery circuit. The front-end circuit receives a signal transmitted via a frequency-shift keying channel, and generates the baseband signal of the received signal. The complex differential discriminators have a plurality of orders and use the complex conjugate of the baseband signal of the received signal. The recovery circuit recovers symbols by applying a maximum likelihood sequence estimation (MLSE) technique to the output values of the complex differential discriminators having the plurality of orders.
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