Undersampled frequency shift ON-OFF keying (UFSOOK) for camera communications (CamCom)
- 1 May 2013
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- No. 23791268,p. 645-648
- https://doi.org/10.1109/wocc.2013.6676454
Abstract
Camera communications is the use of an image sensor to receive LED modulated data. This paper shows how frequency shift ON-OFF keying - at frequencies that avoid flicker - can be used to encode bits while at the same time being successfully decoded by a low frame rate camera using subsampling. This is done by selecting mark and space frequencies that are harmonics of the camera frame rate and then processing the subsampled aliased frequencies to decode bit data.Keywords
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