Transmitting signals using directional diversity over a network
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United States of America Patent
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Mar 30, 2021
Grant Date -
Nov 16, 2017
app pub date -
Feb 28, 2017
filing date -
Sep 6, 2011
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Abstract
Methods and systems are disclosed for using a common frequency spectrum for simultaneous upstream and downstream communications in a network by implementing directional diversity techniques. Non-reciprocal coupling devices, such as circulators, may be configured in the network to provide unidirectional transmission of each signal to prevent interference. In some embodiments, feed-forward interference cancellation is utilized to increase signal isolation of upstream and downstream signals.
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