Isolation requirement mitigation for IDU-ODU interconnections in microwave systems
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United States of America Patent
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Apr 19, 2016
Grant Date -
Jun 4, 2015
app pub date -
Dec 16, 2013
filing date -
Dec 2, 2013
priority date (Note) -
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Abstract
A system and method to reduce and/or eliminate interference between an indoor unit (IDU) and an outdoor unit (ODU) in a split backhaul architecture. The interference can be present in, for example, an N-plexer in the IDU and/or the ODU. For example, interference on an outbound signal that is introduced by an inbound signal in the N-plexer can be reduced and/or eliminated by introducing a cancellation signal that is combined with the outbound signal. Further, the N-plexer can include two or more signal cancellation modules configured such that the output of a first signal cancellation module is connected to both a common pathway and the input of the second signal cancellation module. The input of the first signal cancellation module and the output of the second signal cancellation module can be configured as the Tx and Rx pathways of the IDU and/or ODU with respect to the common pathway.
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