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METHOD FOR CHANNEL ESTIMATION AND FEEDBACK IN MASSIVE MIMO COMMUNICATION SYSTEM
METHOD FOR CHANNEL ESTIMATION AND FEEDBACK IN MASSIVE MIMO COMMUNICATION SYSTEM
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机译：大规模MIMO通信系统中的信道估计和反馈方法
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摘要
The present invention relates to a method for channel estimation and feedback in a massive multi-input multi-output communication system and, more particularly, to a method for channel estimation and feedback in a massive multi-input multi-output communication system, which can perform more accurate channel estimation than existing channel estimation methods with less pilot overhead and feed back channel information with less feedback resources by using channel correlation information in a terminal. The method for channel estimation and feedback in a massive multi-input multi-output communication system according to a preferable embodiment of the present invention comprises the steps of: a) determining a pilot vector and an array response vector; b) acquiring the pilot vector and the array response vector and designing a downward oblique operator by using the channel correlation information, by the terminal; c) receiving the pilot vector, which is transmitted from a base station, as a downward received signal through a downlink channel, by the terminal; and d) estimating the downlink channel from the downward received signal by using the downward oblique operator, by the terminal. A pilot signal is determined to minimize the mean square error of the channel when estimating the channel by compressed sensing.;COPYRIGHT KIPO 2016
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