Multi-carrier on-off keying communications
AssigneeQUALCOMM Incorporated
InventorsQingjiang Tian, Jing Sun, Piyush Gupta, Zhifei Fan, Raviteja Patchava, Xiaoxia Zhang
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Abstract
Certain aspects of the present disclosure provide techniques for multi-carrier on-off keying communications. A method for wireless communications by an apparatus includes receiving a signal comprising multiple carrier frequencies modulated with on-off keying; decoding 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 recovering data from the decoded signal.
Claims30
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.
An apparatus configured for wireless communications, comprising:
- one or more memories;
- and
- one or more processors coupled to the one or more memories, the one or more processors being configured to cause the apparatus to:
- obtain an indication of one or more delta frequencies for decoding a multi-carrier signal modulated with on-off keying, the one or more delta frequencies including a delta frequency,
- monitor for interference associated with the multi-carrier signal,
- select multiple carrier frequencies that form the one or more delta frequencies based on the monitored interference, and
- send a signal comprising multiple carrier frequencies modulated with the on-off keying, wherein the multiple carrier frequencies comprise a first carrier frequency and a second carrier frequency, wherein the delta frequency is associated with the first carrier frequency and the second carrier frequency, and wherein the signal comprises data.
A method of wireless communications by an apparatus, comprising:
- receiving a signal comprising multiple carrier frequencies modulated with on-off keying;
- decoding 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, wherein decoding the signal comprises:
- rectifying the signal and outputting a first rectified signal via a first rectifier;
- filtering the first rectified signal in one or more pass bands and outputting a first filtered signal via a first filter, wherein the delta frequency is in at least one of the one or more pass bands;
- rectifying the first filtered signal and outputting a second rectified signal via a second rectifier;
- and
- filtering the second rectified signal and outputting, via a second filter, the decoded signal that includes an amplitude modulation signal;
- and
- recovering data from the decoded signal.
A method of wireless communications by an apparatus, comprising:
- obtaining an indication of one or more delta frequencies for decoding a multi-carrier signal modulated with on-off keying, the one or more delta frequencies including a delta frequency;
- monitoring for interference associated with the multi-carrier signal;
- selecting multiple carrier frequencies that form the one or more delta frequencies based on the monitored interference;
- and
- sending a signal comprising the multiple carrier frequencies modulated with the on-off keying, wherein the multiple carrier frequencies comprise a first carrier frequency and a second carrier frequency, wherein the delta frequency is associated with the first carrier frequency and the second carrier frequency, and wherein the signal comprises data.
Dependencies are inferred from the claim text.