US 11,711,124 B2
Transmitter, receiver, transmission method, reception method, non-transitory computer readable storage medium, and integrated circuit
Mikihiro Ouchi, Osaka (JP); Tomohiro Kimura, Osaka (JP); and Takayuki Sotoyama, Kanagawa (JP)
Assigned to Panasonic Holdings Corporation, Osaka (JP)
Filed by Panasonic Holdings Corporation, Osaka (JP)
Filed on Mar. 25, 2022, as Appl. No. 17/705,105.
Claims priority of application No. 2021-060311 (JP), filed on Mar. 31, 2021.
Prior Publication US 2022/0321184 A1, Oct. 6, 2022
Int. Cl. H04B 7/06 (2006.01); H04B 7/0426 (2017.01); H04B 1/00 (2006.01)
CPC H04B 7/0606 (2013.01) [H04B 1/0007 (2013.01); H04B 1/0053 (2013.01); H04B 7/043 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A transmitter that supports beamforming function using a plurality of antenna elements, the transmitter comprising:
a dither signal generator which, in operation, generates pseudo random sequence signals as dither signals for lower bits of digital signals, the pseudo random sequence signals being different from each other, the digital signals each corresponding to respective one of the plurality of antenna elements; and
a plurality of digital-to-analog converters which, in operation, adds the dither signals generated by the dither signal generator to the lower bits of the digital signals, and converts only upper bits of addition results of the digital signals and the dither signals into analog signals.