US 12,348,341 B2
Method and apparatus for estimating direct current interference, storage medium and terminal
Dajin Wang, Shanghai (CN); Hongli Yuan, Shanghai (CN); Chongxiang Zhong, Shanghai (CN); and Haitao Zhang, Shanghai (CN)
Assigned to SPREADTRUM COMMUNICATIONS (SHANGHAI) CO., LTD., Shanghai (CN)
Filed by SPREADTRUM COMMUNICATIONS (SHANGHAI) CO., LTD., Shanghai (CN)
Filed on Jun. 30, 2023, as Appl. No. 18/344,991.
Application 18/344,991 is a continuation of application No. PCT/CN2021/131134, filed on Nov. 17, 2021.
Claims priority of application No. 202011643029.3 (CN), filed on Dec. 30, 2020.
Prior Publication US 2023/0353430 A1, Nov. 2, 2023
Int. Cl. H04L 25/06 (2006.01); H04B 17/345 (2015.01)
CPC H04L 25/06 (2013.01) [H04B 17/345 (2015.01)] 20 Claims
OG exemplary drawing
 
1. A method for estimating Direct Current (DC) interference, comprising:
performing an accumulative adding calculation on frequency-domain modulation symbols on a corresponding frequency point of DC interference to obtain a real-time accumulated value;
updating a historical accumulated value using the real-time accumulated value based on that a number of times of accumulation reaches a first preset number; or calculating a real-time accumulated average value and a long-term accumulated average value based on the real-time accumulated value and a number of times of accumulation, every time a second preset number of frequency-domain modulation symbols are accumulated, wherein the second preset number is smaller than the first preset number; and
calculating a DC interference estimated value based on the long-term accumulated average value or the updated historical accumulated value.