US 12,308,896 B2
Systems, methods, and devices for channel interference detection in wireless devices
Sridhan Kalasi Sreepada, Bangalore (IN); Prasanna Sethuraman, Bangalore (IN); and Ayush Sood, Bangalore (IN)
Assigned to Cypress Semiconductor Corporation, San Jose, CA (US)
Filed by Cypress Semiconductor Corporation, San Jose, CA (US)
Filed on Oct. 15, 2021, as Appl. No. 17/502,413.
Prior Publication US 2023/0117788 A1, Apr. 20, 2023
Int. Cl. H04B 17/345 (2015.01); H04B 17/318 (2015.01); H04L 27/26 (2006.01); H04W 72/541 (2023.01)
CPC H04B 17/345 (2015.01) [H04B 17/318 (2015.01); H04L 27/2666 (2013.01); H04W 72/541 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
receiving a signal at a wireless device, the signal comprising at least one data subcarrier and one or more guard subcarriers, the one or more guard subcarriers being at edges of a transmission band;
determining, using processing logic, that one or more guard subcarriers are available for adjacent channel interference (ACI) detection based, at least in part, on a signal quality metric;
measuring, using the processing logic, a power of each of the one or more guard subcarriers and a total power of the one or more guard subcarriers;
determining, using the processing logic, an ACI is present at an estimated position relative to the at least one data subcarrier based, at least in part, on the measurements of the one or more guard subcarriers; and
performing, using the processing logic, one or more deweighing operations comprising modifying a noise variance term of an input-output equation used by a communications protocol for signal encoding/decoding of data, the modifying of the noise variance term being based on the estimated position of the ACI within the transmission band relative to the one or more guard subcarriers.