US 12,126,395 B2
Method and apparatus for generating equivalent nonlinear noise
Ke Zhang, Beijing (CN); and Zhenning Tao, Beijing (CN)
Assigned to FUJITSU LIMITED, Kawasaki (JP)
Filed by FUJITSU LIMITED, Kawasaki (JP)
Filed on Aug. 24, 2022, as Appl. No. 17/894,711.
Claims priority of application No. 202111082565.5 (CN), filed on Sep. 15, 2021.
Prior Publication US 2023/0082707 A1, Mar. 16, 2023
Int. Cl. H04B 17/345 (2015.01); H04L 1/20 (2006.01)
CPC H04B 17/345 (2015.01) [H04L 1/203 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a memory; and
a processor coupled to the memory, the processor to control execution of a process including,
randomly generating a white noise obeying zero-mean Chi-square distribution; and
filtering the white noise by using a spectrum of equivalent nonlinear noise as a filter to obtain an equivalent nonlinear noise,
wherein
the process to randomly generate the white noise comprises:
generating a group of Chi-square distribution random variables K; and
subtracting a mean value of the random variables K from the random variables K to obtain the white noise,
or
the process to randomly generate the white noise comprises:
generating a group of Chi-square distribution random variables K; and
subtracting the random variables K from a mean value of the random variables K to obtain the white noise.