TY - GEN
T1 - Uncoordinated multiple access schemes for visible light communications and positioning
AU - Ho, Siu-Wai
AU - Sung, Chi Wan
PY - 2016/8/10
Y1 - 2016/8/10
N2 - In visible light communication (VLC) systems, information are conveyed by visible light instead of radio-frequency electromagnetic waves. Based on received signal strength, accurate indoor positioning systems can also be built. Since a receiver obtains the superposition of signals from all light sources within line of sight together with ambient light, a multiple access scheme is necessary for the receiver to distinguish the received symbol and signal strength from each light source. This paper proposes two multiple access schemes for VLC. The first scheme supports information broadcast and positioning. By using 2N timeslots, N transmitters transmit 2N - 1 symbols in total. The second scheme supports positioning only but places emphasis on minimizing the required timeslots. In each 2N timeslots for an odd integer N, the channel gains of 3N - 1 over 2 transmitters can be estimated.
AB - In visible light communication (VLC) systems, information are conveyed by visible light instead of radio-frequency electromagnetic waves. Based on received signal strength, accurate indoor positioning systems can also be built. Since a receiver obtains the superposition of signals from all light sources within line of sight together with ambient light, a multiple access scheme is necessary for the receiver to distinguish the received symbol and signal strength from each light source. This paper proposes two multiple access schemes for VLC. The first scheme supports information broadcast and positioning. By using 2N timeslots, N transmitters transmit 2N - 1 symbols in total. The second scheme supports positioning only but places emphasis on minimizing the required timeslots. In each 2N timeslots for an odd integer N, the channel gains of 3N - 1 over 2 transmitters can be estimated.
UR - http://www.scopus.com/inward/record.url?scp=84985914753&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84985914753&origin=recordpage
U2 - 10.1109/ISIT.2016.7541319
DO - 10.1109/ISIT.2016.7541319
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 9781509018062
VL - 2016-August
T3 - IEEE International Symposium on Information Theory
SP - 350
EP - 354
BT - IEEE International Symposium on Information Theory - Proceedings
PB - IEEE
T2 - 2016 IEEE International Symposium on Information Theory, ISIT 2016
Y2 - 10 July 2016 through 15 July 2016
ER -