Methods, systems, and computer program products for calibrating phase hardware-induced distortion in a cellular communications system
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United States of America Patent
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Jan 23, 2018
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Nov 21, 2016
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May 11, 2015
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Abstract
Methods and systems are described for calibrating phase hardware-induced distortion in a cellular communications system. In one aspect, an estimate of a phase difference at a user equipment (UE) between downlink channels including signals sent over two or more BS transmitter chains is obtained. A phase difference between uplink channels including signals received over two or more BS receiver chains is determined. A relative phase distortion induced by two or more BS transceiver chains is determined based on the received estimate of phase difference between downlink channels and the determined phase difference between uplink channels.
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