US 12,457,135 B2
Wireless communication method, wireless communication system, and transmitter
Keita Kuriyama, Musashino (JP); Hayato Fukuzono, Musashino (JP); Masafumi Yoshioka, Musashino (JP); and Toshifumi Miyagi, Musashino (JP)
Assigned to NTT, Inc., Tokyo (JP)
Appl. No. 18/686,892
Filed by NTT, Inc., Tokyo (JP)
PCT Filed Aug. 27, 2021, PCT No. PCT/JP2021/031602
§ 371(c)(1), (2) Date Feb. 27, 2024,
PCT Pub. No. WO2023/026492, PCT Pub. Date Mar. 2, 2023.
Prior Publication US 2024/0356787 A1, Oct. 24, 2024
Int. Cl. H04L 25/03 (2006.01); H04B 7/0456 (2017.01)
CPC H04L 25/03343 (2013.01) [H04B 7/0456 (2013.01); H04L 2025/03585 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A wireless communication method of transmitting a signal from a transmission device to a reception device, the method comprising:
precoding a stream of a transmission signal in a time domain by using an FIR filter;
controlling a transmission power of the precoded stream;
amplifying the precoded stream such that the controlled transmission power is obtained; and
performing control for changing a tap length in precoding such that the tap length is decreased in a case where a magnitude of a last tap coefficient in precoding is small and the tap length is increased in a case where the magnitude is large, with respect to a threshold value calculated on the basis of quality information of a received signal fed back from the reception device that has received the amplified stream or quality information of a received signal calculated by using at least characteristics of an amplifier of the transmission device.