Numerical Relativity (NR) uses advanced numerical techniques in supercomputers to simulate the relativistic, strong-field dynam s and radiation of merging compact binaries, such as black holes and neutron tars, and oth r s milar phenomena that are governed by E nstein's th ory of General R lativi y (GR). Analytical relativity (AR) metho s, based on Po -Newtonian exp ns ons of the GR qua ion nd ...

Numerical Relativity (NR) uses advanced numerical techniques in supercomputers to simulate the relativistic, strong-field dynam s and radiation of merging compact binaries, such as black holes and neutron tars, and oth r s milar phenomena that are governed by E nstein's th ory of General R lativi y (GR). Analytical relativity (AR) metho s, based on Po -Newtonian exp ns ons of the GR qua ion nd ...

Next-generation systems aim to increase both the speed and responsiveness of wireless communications while supporting compelling applications such as edge-cloud computing, remote health, vehicle-to-infrastructure communications, etc. As these are expected carry confidential personal data, ensuring user privacy becomes a critical issue. In contrast traditional security designs that prevent infor...

This M-file analyzes an Institute of Electrical and Electronics Engineers (IEEE) 802.11 Machine Access Control (MAC) layer channel in which multiple nonsaturated stations compete for access to a single access point (AP). The M-file allows the user to model various effects at the physical (PHY) layer, including effects of fading, path loss, and shadowing. The function SNRcdf() performs the PHY l...

In this paper, we discuss a cross layer congestion control technique of TCP Reno-2 in wireless networks. In this both TCP layer and PHY layer jointly control congestion. The PHY layer changes transmission power as per the channel condition, interference received and congestion in the network, whereas the TCP layer controls congestion using Reno-2 window based flow control. Our simulations show ...

The network simulator ns-2 [1] is a widely used tool in the field of wired and wireless communications research. Although the ns-2 implementation is in constant evolution, it fails, for obvious reasons, to reflect all aspects related to the newest communication technologies. One example of such technology is 5.9 GHz Direct Short Range Communications (DSRC) [2] for vehicular environments, which ...

Wireless networks traditionally use a single physical layer for communication: some high bit-rate short-range radios, others low long-range radios. This article introduces g6TiSCH, generalization of the standards-based IETF 6TiSCH protocol stack. g6TiSCH allows nodes equipped with multiple radios to dynamically switch between them on link-by-link basis, as function link-quality. approach result...