Reducing out-of-channel noise in a wireless distribution system (WDS)
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United States of America Patent
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Mar 19, 2019
Grant Date -
Oct 5, 2017
app pub date -
Mar 31, 2016
filing date -
Mar 31, 2016
priority date (Note) -
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Abstract
Embodiments of the disclosure relate to reducing out-of-channel noise in a wireless distribution system (WDS). A digital filter in a remote unit is configured to suppress out-of-channel noise in a downlink digital communications signal based on at least one filter configuration parameter received from a control circuit. The control circuit is configured to determine the filter configuration parameter based on physical characteristics of the downlink digital communications signal. By suppressing the out-of-channel noise of the downlink digital communications signal, it is possible to provide a downlink RF communications signal communicated from the remote unit that complies with a spectrum emission mask (SEM). Further, by suppressing the out-of-channel noise at the remote unit, it is not necessary for a central unit to perform digital filtering before distributing the downlink digital communications signal to the remote unit, thus helping reduce complexity, cost, physical size, and power consumption of the central unit.
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