Frequency orthogonalized MIMO channel sounding and feedback in a wireless home network
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United States of America Patent
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Oct 17, 2017
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N/A
app pub date -
Nov 7, 2016
filing date -
Apr 1, 2016
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Abstract
A WAP including: a spatial mapper component, a partial sounding feedback expander circuit and a beamforming matrix calculator. The spatial mapper component spatially maps the transmission of a single MIMO sounding packet with either a single full spatial mapping matrix (SMM) or a set of “N” partial SMM responsive respectively to a full or composite sounding mode designation. The partial sounding feedback expander circuit in the composite sounding mode, expands partial sounding feedback received from a targeted station in response to the single MIMO sounding packet into a full sounding feedback. The beamforming matrix calculator calculates a full beamforming matrix for transmitting downlink communications to the targeted station from the full sounding feedback provided by either the partial sounding feedback expander circuit in the composite sounding mode, or the full sounding feedback received directly from the targeted station in the full sounding mode.
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