Abstract
Reporters obtained the following quote from the background information supplied by the inventors:“Unless otherwise indicated herein, approaches described in th is section are not prior art to the claimslisted below and are not admitted as prior art by inclusion in this section.“In new generation communication systems (e.g., a fifth-generation (5G) network, or a New Radio (NR)network), high frequency bands (e.g., millimeter wave) tran smission may become more popular and maybe necessary for high data rate require ments. In high frequency band transmission, it is unavoidable touse an antenna array for transmitting signals. One characteristic of the antenna array is that the radiationbeam of which can be narrow and points to a specific direction.
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