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Medical Body Area Network (MBAN), recently released by the Federal Communications Commission (FCC), is a narrowband body area network (NB-BAN) specialized for medical applications. Its allocated band of frequency is from 2360–2400 MHz. This paper studies the effect of transmitter and receiver node positions on the bit-error-rate (BER) performance and maximum allowable data throughput of the on-body...
Recent advancements in the “Internet of Things” allowed “Things” or “nodes” to have virtual identities and exchange data and services. “Things” form distributed systems which lack central control and have flexible topologies. In this context, it is crucial to have a robust, scalable and adaptive trust model for trustworthy node communication between nodes (i.e., Things). In this paper, A Context-based...
A key research area in wireless transmission is underwater communication. It has a vital role in applications like underwater sensor networks (UWSNs), disaster detection and surveillance. The underwater channel is considered as one of the most challenging communication channels due to the inherent unique characteristics of the medium. Acoustic signals are the current best candidates for underwater...
Educational institutions across the World rely heavily on IT in teaching-learning that accept the services provision and business needs. Whereas buying and preserving a huge number of devices used in educational process whether it is licensed software and/or original hardware require great investment and special skills to support them in the current financial crisis which affect the growing needs...
In order for Mobile Ad hoc Networks (MANET) to support service requirements of multimedia and real-time applications, the underlying routing protocol must provide Quality of Service (QoS) in terms of average End-to-End Delay (ETED). Towards this end, we investigate a number of conventional routing protocols, such as AODV (reactive routing) and DSDV (proactive routing), under different traffic and...
In this paper, we study the performance of low-power impulse radio ultra-wideband (IR-UWB) correlation receivers with suboptimal rectangular templates in additive-white-Gaussian-noise (AWGN), and independent and correlated Nakagami-m channels. Furthermore, we give numerical results based on simulations as well as actual measurements for different Federal Communication Commission (FCC) compliant pulses...
The performance of mobile ad hoc networks depends on the adaptability of its underlying routing protocol to current network conditions. Mobility, traffic load, and traffic type (Delay-Sensitive application or Delay-Tolerant application) are factors affecting the performance of routing protocols in mobile network environment. We carry out an extensive simulation study to investigate the traffic and...
Secure communication in Vehicular Ad hoc Networks (VANETs) can be achieved through a public key infrastructure (PKI). A tamper proof device (TPD) is traditionally used to statically store encryption keys in each vehicle. These keys are renewed periodically by a certificate authority (CA). In this paper, a dynamic key distribution protocol for PKI-based VANETs is proposed. A vehicle dynamically requests...
In this article, we propose and study the performance of low-power impulse radio ultra-wideband correlation-based time-of-arrival (TOA) estimators for body area networks. In particular, we study and compare the signal-to-noise-ratio degradation of TOA correlator-based estimators assuming optimal, real and complex suboptimal sinusoidal templates. Moreover, we study the improved Ziv-Zakai lower bound...
The exponential growth of wireless technologies attracted many research to improve the quality of service (QoS) of global wireless networks such as 802.11 and 802.16. In specific, research targeted the physical layer (PHY) parameters and medium access control (MAC) mechanisms to improve QoS. In this paper we provide a simple yet efficient model to maintain the quality of service for wireless networks...
Due to the increasing demand on wireless technologies, many researches targeted the improvement of quality of service (QoS) of global wireless networks such as 802.11 and 802.16. Most researches targeted the physical layer (PHY) parameters and medium access control (MAC) mechanisms to improve QoS, but they didn't guarantee the QoS of each type of application. To overcome this deficiency we provide...
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