T HIS special issue includes seven interesting articles that tackle some of the existing challenges and design issues related to the use of RF and Communication Technologies for wireless implants. An in-body medical device is a miniature device that is inserted in the human body to collect physiological signals and images or to act like a prosthetic device restoring certain body functions. In o...

Advances in wireless communication, system on chip and low power sensor nodes allowed realization of Wireless Body Area Network (WBAN). WBAN comprised of tiny sensors, which collect information of patient's vital signs and provide a real time feedback. In addition, WBAN also supports many applications including Ubiquitous HealthCare (UHC), entertainment, gaming, military, etc. UHC is required b...

This paper proposes a cascade blockage model for analyzing the vision that user has of wireless network. model, inspired by classical multiplicative models, radial structure meant to analyze blockages seen receiver at origin in different angular sectors. The main novelty is it based on geometry obstacles and takes joint phenomenon into account. We show couple simple instances Laplace transforms...

Many medical devices that are implanted in the body use wires or wireless radiofrequency telemetry to communicate with circuitry outside the body. However, the wires are a common source of surgical complications, including breakage, infection and electrical noise. In addition, radiofrequency telemetry requires large amounts of power and results in low-efficiency transmission through biological ...

With increasing interest in the usage of wearable wireless communication technologies at 1.8 & 2.4GHz and 5 & 8.9GHz band of frequencies, investigations on the human body interaction with these devices are becoming important. This paper provides a microstrip-based multi-band monopole antenna for body Wearable Wireless Devices (WWD), covering licensed and license-free wireless technologies at UH...

Mobile agents have the potential to offer benefits, as they are able either independently or cooperatively move throughout networks and collect/aggregate sensory data samples. They programmed autonomously visit stations through optimal paths, which established according application requirements. However, mobile agent routing protocols still suffer heavy computation/communication overheads, lack...

Video streaming over multihop wireless networks is considered to be a challenging issue and it is mainly affected by the factors like dynamic change in topology, multi path shadowing and fading, packet delay, video quality issues, interference and many more. Video streaming in real time requires special techniques that can overcome the losses of packets in the unreliable networks. There is an i...

In the wireless sensor networks, resource constraints such as bandwidth and energy limitations, limited communication range, low storage and weak processing capacity motivate researchers to solving these problems. Presenting new algorithms such as efficient mobile agent based dada gathering methods would be a good solution for this case. Some of important advantages of mobile agent based data g...

Distributed data-centric storage in wireless sensor networks (WSNs) is considered as a promising big data storage approach, since it contributes to reducing the communication overhead inside the networks. However, most of the existing distributed methods rely on locating systems, which consume more energy, and assume that sensors are uniformly distributed, which is clearly not applicable for th...