Title :
Undersampled frequency shift ON-OFF keying (UFSOOK) for camera communications (CamCom)
Author :
Roberts, Richard D.
Author_Institution :
Intel Labs., Intel Corp., Hillsboro, OR, USA
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 :
amplitude shift keying; cameras; data communication; decoding; image coding; image sensors; video communication; CamCom; LED modulated data; UFSOOK; camera communications; camera frame rate; image sensor; low frame rate camera; subsampling; undersampled frequency shift on-off keying; CamCom; FSK; LED; ON-OFF keying; OOK; UFSOOK; VLC; aliasing; camera communications; differential coding; frequency shift keying; image sensor; undersampling; visible light communications;
Conference_Titel :
Wireless and Optical Communication Conference (WOCC), 2013 22nd
Conference_Location :
Chongqing
Print_ISBN :
978-1-4673-5697-8
DOI :
10.1109/WOCC.2013.6676454
