TY - GEN
T1 - Styrofoam
T2 - 1st ACM MobiCom Workshop on Visible Light Communication Systems, VLCS 2014
AU - LiKamWa, Robert
AU - Ramirez, David
AU - Holloway, Jason
N1 - Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 2014
Y1 - 2014
N2 - 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 smart-phone displays and cameras achieves 69:1 kbps.
AB - 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 smart-phone displays and cameras achieves 69:1 kbps.
KW - Mobile systems
KW - Visible light communication
UR - http://www.scopus.com/inward/record.url?scp=84907886262&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84907886262&partnerID=8YFLogxK
U2 - 10.1145/2643164.2643169
DO - 10.1145/2643164.2643169
M3 - Conference contribution
AN - SCOPUS:84907886262
T3 - VLCS 2014 - Proceedings of the 1st ACM MobiCom Workshop on Visible Light Communication Systems
SP - 27
EP - 32
BT - VLCS 2014 - Proceedings of the 1st ACM MobiCom Workshop on Visible Light Communication Systems
PB - Association for Computing Machinery, Inc
Y2 - 7 September 2014 through 7 September 2014
ER -