Paper Info
Title
Styrofoam: a tightly packed coding scheme for camera-based visible light communication
Abstract
Screen-to-camera visible-light communication links are fundamentally limited by inter-symbol interference, in which the camera receives multiple overlapping symbols in a single capture exposure. By determining interference constraints, we are able to decode symbols with multi-bit depth across all three color channels. We present Styrofoam, a coding scheme which optimally satisfies the constraints by inserting blank frames into the transmission pattern. The coding scheme improves upon the state-of-the-art in camera-based visible light communication by: (1) ensuring a decode with at least half exposure of colored multi-bit symbols, (2) limiting decode latency to two transmission frames, and (3) transmitting 0.4 bytes per grid block at the slowest camera's frame rate. In doing so, we outperform peer unsynchronized VLC transmission schemes by 2.9x. Our implementation on smartphone displays and cameras achieves 69.1 kbps.
Year
DOI
Venue
2014
10.1145/2643164.2643169
VLCS@MobiCom
Field
DocType
Citations 
Byte,Latency (engineering),Computer science,Computer network,Coding (social sciences),Visible light communication,Real-time computing,Interference (wave propagation),Artificial intelligence,Computer vision,Frame rate,Grid,Channel (digital image)
Conference
3
PageRank 
References 
Authors
0.52
8
3
Name
Order
Citations
PageRank
Robert LiKamWa130319.33
David Ramírez2122.38
Jason Holloway371.32