Abstract
| Original language | English |
|---|---|
| Title of host publication | International Conference for Students on Applied Engineering (ICSAE) |
| Publisher | IEEE |
| ISBN (Electronic) | 978-1-4673-9053-8 |
| DOIs | |
| Publication status | Published - Jan 2017 |
Fingerprint
Keywords
- duty cycles
- LEDs
- indoor positioning system
Cite this
}
Optimization of duty cycles for LED based indoor positioning system. / Popoola, Olaoluwa R.; Popoola, Waisu O.; Ramirez-Iniguez, Roberto; Sinanovic, Sinan.
International Conference for Students on Applied Engineering (ICSAE). IEEE, 2017.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Optimization of duty cycles for LED based indoor positioning system
AU - Popoola, Olaoluwa R.
AU - Popoola, Waisu O.
AU - Ramirez-Iniguez, Roberto
AU - Sinanovic, Sinan
N1 - Accepted: email in SAN AAM uploaded: 27/9/16, no embargo as IEEE publication
PY - 2017/1
Y1 - 2017/1
N2 - In this paper, an optimal duty cycle, which increases packet delivery ratio (PDR) and reduces probability of collision is designed for packet transmission in an indoor positioning system based on a multiple LED estimation model (MLEM). MLEM improves positioning accuracy by identifying positions of overlap regions where light footprints from multiple LEDs. In MLEM, asynchronous LED transmitters send positional information at the same frequency, amplitude, and wavelength. Consequently, in an LED overlap region, transmitted packets collide and therefore are lost. Methods to avoid packet collision in this region are considered and based on keeping the hardware simple, packet-based pulse duration multiplexing is optimized to provide a time based pseudo-orthogonality between packets. Initial experiments showed a PDR of 0.5 in the overlap region. However, by defining the boundary conditions for non-persistent packet collisions, an exhaustive search for the optimal packet transmission configuration is carried out in this work. Results show that the optimum points occur at 0.09 and 0.1 duty cycles. The use of this optimal duty cycles improved PDR to 0.9 for transmission in the overlap region.
AB - In this paper, an optimal duty cycle, which increases packet delivery ratio (PDR) and reduces probability of collision is designed for packet transmission in an indoor positioning system based on a multiple LED estimation model (MLEM). MLEM improves positioning accuracy by identifying positions of overlap regions where light footprints from multiple LEDs. In MLEM, asynchronous LED transmitters send positional information at the same frequency, amplitude, and wavelength. Consequently, in an LED overlap region, transmitted packets collide and therefore are lost. Methods to avoid packet collision in this region are considered and based on keeping the hardware simple, packet-based pulse duration multiplexing is optimized to provide a time based pseudo-orthogonality between packets. Initial experiments showed a PDR of 0.5 in the overlap region. However, by defining the boundary conditions for non-persistent packet collisions, an exhaustive search for the optimal packet transmission configuration is carried out in this work. Results show that the optimum points occur at 0.09 and 0.1 duty cycles. The use of this optimal duty cycles improved PDR to 0.9 for transmission in the overlap region.
KW - duty cycles
KW - LEDs
KW - indoor positioning system
U2 - 10.1109/ICSAE.2016.7810219
DO - 10.1109/ICSAE.2016.7810219
M3 - Conference contribution
BT - International Conference for Students on Applied Engineering (ICSAE)
PB - IEEE
ER -