Tag Archive: 'ns3 documentation'
In this paper, we discuss three challenges associated with antenna integration in platforms such as wearables and IoT. We explore the use PCB-integrated antenna designs in place of chip antennas, and the sensitivity of antenna radiation efficiency to hand model proximity as in a smartwatch usage scenario. Finally we showcase, using an active card reader, […]
Here, a millimeter wave photodiode (mm-wave PD) integration platform for development of high-power Radio-over-Fiber (RoF) wireless photonic transmitters (PTs) is presented. The platform features a novel planar bias-tee network design making use of a single quarter-wave coupled-line (CL) technique and two slotted split-ring resonators (SRRs) integrated in the DC bias line. The introduced bias-tee network enables proper […]
In wireless sensor networks securing code update is essential for many crucial military applications. The nodes deployed in border areas in the military region called the border sensor nodes are the more sensitive nodes. The border sensor nodes need to do some special tasks compared to other intermediate sensor nodes. So the code update to […]
This paper presents an investigation of the secrecy performance of amplify-and-forward (AF) distributed beamforming (DBF) and opportunistic relaying (OR) through K untrustworthy relays. The capacity scaling and achievable diversity order of a secure communication are derived for K → ∞ and in high signal-to-noise-ratio (SNR) regimes, respectively. The DBF is shown to convey confidential messages with a […]
Low power sensor networks with communication enabled by WiFi are expected to be widely deployed. A major challenge is collecting event-driven uplink data from a large number of low-power sensors with low latency. In WiFi, the access point (AP) typically polls nodes individually to schedule uplink transmission times, resulting in a large latency. In this paper, we […]
In recent years, with the improvement of the high speed communication infrastructure, P2P content distribution systems have been attracting more attention. In a P2P content distribution system, the lack of a central management server provides the system its robustness. However, it also leads to problems in content reliability and accessibility. We propose a secure content distribution system […]
Session Initiation Protocol is an IP based signaling protocol used for establishing, modifying and terminating sessions. During the signaling process, both the peers may initiate similar or controversial signaling messages resulting in Race / Glare conditions. SIP protocol handles glare conditions by transmitting the signaling messages after a random interval of time, within a specified time range. […]
There are two types of P2P systems satisfying two different user demands: 1) file downloading and 2) video-on-demand (VoD) streaming. An example of file downloading is the original BitTorrent, and examples for VoD streaming include various commercial P2P-based VoD streaming systems such as that offered by PPLive. We have a hypothesis – by combining a […]
Distributed applications require coordination of distributed software components in order to achieve a common goal. A coordination model that abstracts the complexity of network communication eases the development of such applications. The objective is to design collaboration with remote hosts in the same way as local interactions. Separation of coordination logic and application code increases maintainability, as components can be easily […]
We present Munin, a software framework for building ubiquitous analytics environments consisting of multiple input and output surfaces, such as tabletop displays, wall-mounted displays, and mobile devices. Munin utilizes a service-based model where each device provides one or more dynamically loaded services for input, display, or computation. Using a peer-to-peer model for communication, it leverages IP multicast to replicate […]
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