US 12,470,445 B2
Multi-carrier on-off keying communications
Qingjiang Tian, San Diego, CA (US); Jing Sun, San Diego, CA (US); Piyush Gupta, Bridgewater, NJ (US); Zhifei Fan, San Diego, CA (US); Raviteja Patchava, San Diego, CA (US); and Xiaoxia Zhang, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Oct. 26, 2023, as Appl. No. 18/494,901.
Prior Publication US 2025/0141723 A1, May 1, 2025
Int. Cl. H04L 27/06 (2006.01); H04L 27/04 (2006.01)
CPC H04L 27/066 (2013.01) [H04L 27/04 (2013.01)] 30 Claims
OG exemplary drawing
 
1. An apparatus configured for wireless communications, comprising:
one or more memories;
one or more processors coupled to the one or more memories, the one or more processors being configured to cause the apparatus to:
receive a signal comprising multiple carrier frequencies modulated with on-off keying,
decode the signal based at least in part on a delta frequency being associated with a first carrier frequency and a second carrier frequency among the multiple carrier frequencies, and
recover data from the decoded signal:
a first rectifier configured to rectify the signal and to output a first rectified signal;
a first filter configured to filter the first rectified signal in one or more pass bands and to output a first filtered signal, wherein the delta frequency is in at least one of the one or more pass bands;
a second rectifier configured to rectify the first filtered signal and to output a second rectified signal; and
a second filter configured to filter the second rectified signal and to output the decoded signal that includes an amplitude modulation signal.