Method and apparatus for dual-band modulation in powerline communication network systems
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United States of America Patent
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Issued Date -
Jan 24, 2002
app pub date -
Jun 6, 2001
filing date -
Jun 7, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A novel method and apparatus for modulating in dual operational bands in powerline networking systems is described. A transmitter and a receiver are described wherein the transmitter and receiver are operable in different modulation frequency bands. The present invention can easily switch between operational frequency bands by utilizing a fundamental signal for performing modulations in a first frequency band and by utilizing a first alias signal for performing modulations in a second frequency band. The present inventive method and apparatus can switch operation from a first operational frequency band to a second operational frequency band by modifying two components in existing transmitters and only one component in existing OFDM receivers. Advantageously, therefore, the present invention can be utilized with existing powerline networking technology.
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