US 12,248,090 B2
Communication device and communication method
Nobuya Arakawa, Nagaokakyo (JP); Katsuhisa Kashiwagi, Nagaokakyo (JP); Ryo Saito, Nagaokakyo (JP); and Koichi Ichige, Yokohama (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Nagaokakyo (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Oct. 17, 2022, as Appl. No. 17/966,898.
Application 17/966,898 is a continuation of application No. PCT/JP2021/014858, filed on Apr. 8, 2021.
Claims priority of application No. 2020-074297 (JP), filed on Apr. 17, 2020.
Prior Publication US 2023/0032458 A1, Feb. 2, 2023
Int. Cl. G01S 7/35 (2006.01); G01S 13/42 (2006.01)
CPC G01S 7/354 (2013.01) [G01S 13/42 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A communication device comprising:
an antenna; and
circuitry configured to:
calculate an arrival direction of a reception signal received from the antenna in a case of a predetermined incoming wave number based on the reception signal and the predetermined incoming wave number;
calculate an incoming signal for each of one or more arrival directions in a case of an incoming wave number based on the incoming wave number and the one or more arrival directions; and
estimate an incoming wave number of the reception signal based on levels of the incoming signals in a plurality of the arrival directions.