Grouping based reference signal transmission for massive MIMO scheme
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United States of America Patent
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Jan 16, 2018
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Feb 21, 2014
filing date -
Jul 17, 2013
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Abstract
Grouping based reference signal transmission scheme for massive MIMO is disclosed. UEs are grouped and each UE group receives information on a sequence used for the uplink reference signal from a base station. The information is determined to assign orthogonal sequences to UEs within a UE group considering at least one or more of a number of orthogonal sequences, a number of the UEs within the UE group, amount of information to be transmitted, channel condition between the base station and each UE, and a number of sequences assigned to each UE of the UEs.
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