US 11,671,059 B2
Device and method for compensating for nonlinearity of power amplifier
Hongmin Choi, Seoul (KR); Junse Lee, Seoul (KR); Hyunseok Yu, Seoul (KR); and Youngik Cho, Seoul (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Dec. 20, 2021, as Appl. No. 17/645,076.
Application 17/645,076 is a continuation of application No. 16/833,771, filed on Mar. 30, 2020, granted, now 11,251,755.
Claims priority of application No. 10-2019-0083441 (KR), filed on Jul. 10, 2019.
Prior Publication US 2022/0115991 A1, Apr. 14, 2022
Int. Cl. H04K 1/02 (2006.01); H04L 25/03 (2006.01); H04L 25/49 (2006.01); H03F 1/32 (2006.01); H03F 3/24 (2006.01); H04B 1/04 (2006.01); H03F 3/189 (2006.01)
CPC H03F 1/3258 (2013.01) [H03F 3/189 (2013.01); H03F 3/24 (2013.01); H04B 1/0475 (2013.01); H03F 2201/3224 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method of performing a pre-distortion calculation on an input signal of a frequency band spanning over a first frequency section and a second frequency section, performed by a device, the method comprising:
obtaining a first matrix corresponding to the first frequency section, a second matrix corresponding to the second frequency section, and a matrix corresponding to the frequency band based on a center frequency of the frequency band;
obtaining a first vector corresponding to the first frequency section, a second vector corresponding to the second frequency section, and a third vector corresponding to the frequency band based on the center frequency of the frequency band; and
performing pre-distortion on the input signal by using a coefficient matrix obtained based on the obtained matrix corresponding to the frequency band and the obtained third vector,
wherein the obtaining of the matrix corresponding to the frequency band comprises:
obtaining a first temporary matrix based on a first center frequency in the first frequency section, the center frequency of the frequency band, and the first matrix;
obtaining a second temporary matrix based on a second center frequency in the second frequency section, the center frequency of the frequency band, and the second matrix; and
obtaining the matrix corresponding to the frequency band by performing a calculation of summing the first temporary matrix and the second temporary matrix.