5 documents found, page 1 of 1
On the scalability of constructive interference in low-power wireless networks
Noda, Claro; Pérez-Penichet, Carlos M.; Seeber, Balint; Zennaro, Marco; Alves, Mário; Moreira, AdrianoConstructive baseband interference has been recently introduced in low-power wireless networks as a promising technique enabling low-latency network flooding and sub-μs time synchronisation among network nodes. The scalability of this technique has been questioned in regards to the maximum temporal misalignment among baseband signals, due to the variety of path delays in the network. By contrast, we find that t...
On the Scalability of Constructive Interference in Low-Power Wireless Networks
Noda, Claro; Penichet, Carlos Pérez; Seeber, Balint; Zennaro, Marco; Alves, Mário; Moreira, AdrianoConstructive baseband interference has been recently introduced in low-power wireless networks as a promising technique enabling low-latency network flooding and sub-microsecond time synchronisation among network nodes. The scalability of this technique has been questioned in regards to the maximum temporalmisalignment among baseband signals, due to the variety of path delays in thenetwork. By contrast, we find...
Foraging at the Edge of Chaos: Internal Clock versus External Forcing
Nicolis, S. C.; Fernández, J.; Pérez-Penichet, C.; Noda, Claro; Tejera, F.; Ramos, O.; Sumpter, D. J. T.; Altshuler, E.Activity rhythms in animal groups arise both from external changes in the environment, as well as from internal group dynamics. These cycles are reminiscent of physical and chemical systems with quasiperiodic and even chaotic behavior resulting from “autocatalytic” mechanisms. We use nonlinear differential equations to model how the coupling between the self-excitatory interactions of individuals and external f...
JamLab: augmenting sensornet testbeds with realistic and controlled interferenc...
Boano, Carlo Alberto; Voigt, Thiemo; Noda, Claro; Römer, Kay; Zúñiga, MarcoRadio interference drastically affects the performance of sensor-net communications, leading to packet loss and reduced energy-efficiency. As an increasing number of wireless devices operates on the same ISM frequencies, there is a strong need for understanding and debugging the performance of existing sensornet protocols under interference. Doing so requires a low-cost flexible testbed infrastructure that allo...
Quantifying the channel quality for interference-aware wireless sensor networks
Noda, Claro; Prabh, K. Shashi; Alves, Mário; Voigt, Thiemo; Boano, Carlo AlbertoReliability of communications is key to expand application domains for sensor networks. SinceWireless Sensor Networks (WSN) operate in the license-free Industrial Scientific and Medical (ISM) bands and hence share the spectrum with other wireless technologies, addressing interference is an important challenge. In order to minimize its effect, nodes can dynamically adapt radio resources provided information abou...