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Abstract: This paper presents a mutual coupling-based calibration method for time-division-duplex massive MIMO systems, which enables downlink precoding based on uplink channel estimates. The entire ...
Abstract: Channel reciprocity greatly facilitates downlink precoding in time-division duplexing (TDD) multiple-input multiple-output communications without the need for channel state information ...
The US customs authorities say they will stop collecting import tariffs imposed under the International Emergency Economic Powers Act, or IEEPA. The Customs and Border Protection agency said on Sunday ...
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