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US 9,001,933 B2Granted
Receiving apparatus and method in smart utility network communication system
AssigneeElectronics and Telecommunications Research Institute
InventorsMi Kyung Oh, Byoung Hak Kim, Cheol-ho Shin, Jaehwan Kim, Sangsung Choi
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Abstract
A receiving apparatus receives an FSK signal, converts the FSK signal into a phasor including amplitude and phase, estimates and compensates for a CFO (carrier frequency offset) from the converted phasor, and recovers a data bit from the converted phasor.
Claims16
A method of receiving signals by an FSK (frequency shift keying) receiver, the method comprising:
- receiving an FSK signal, wherein the FSK signal comprises a silence part;
- converting the FSK signal into a phasor including amplitude and phase;
- recovering a data bit from the phasor;
- eliminating an interference signal from the FSK signal by using the phasor converted from the silence part;
- and
- estimating a CFO (carrier frequency offset) by using the phasor.
3 more elements
An apparatus for receiving an FSK (frequency shift keying) signal, the apparatus comprising:
- a phasor correlator for converting the FSK signal into a phasor including amplitude and phase, wherein the FSK signal comprises a silence part;
- a carrier frequency compensator that estimates and compensates for CFO (carrier frequency offset) by using the phasor;
- a clock and data recoverer for recovering a data bit from the phasor;
- and
- an interference signal eliminator that eliminates an interference signal from the FSK signal by using the phasor converted from the silence part.
2 more elements
Dependencies are inferred from the claim text.