37th Annual IEEE Conference on Local Computer Networks (2012)
Clearwater Beach, FL, USA USA
Oct. 22, 2012 to Oct. 25, 2012
Aditya V. Padaki , Dept. of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, USA
Maciej Zawodniok , Dept. of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, USA
The passive backscatter technology is increasingly employed in wireless sensor network (WSN) applications. In contrast to existing technologies it offers several advantages including a battery-less operation, extremely small-form factor, and low costs. Our previous works demonstrated that theoretically such backscatter-based network outperforms existing solutions. In contrast, this paper presents a new time division multiple access (TDMA) based approach that considers a practical realization of the multi-hop framework. The capacity limits for the proposed scheme are evaluated for two frameworks - (a) single hop with direct backscatter signal and (b) a multi-hop transmission. An analytical comparison shows that the multi-hop transmission improves the per-node capacity over the single-hop scenario. Numerical simulations verify the theoretical conclusions.
Base stations, Spread spectrum communication, Wireless sensor networks, Backscatter, Time division multiple access, Wireless communication, Fading, multi-hop networks, wireless passive networks, wireless sensor networks, fading channels, channel capacity, passive devices, backscatter communication
A. V. Padaki and M. Zawodniok, "TDMA for wireless passive backscatter networks: An information theoretic approach," 37th Annual IEEE Conference on Local Computer Networks(LCN), Clearwater Beach, FL, USA USA, 2012, pp. 264-267.