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QoS provisioning for Audio-Video traffic in WLANs respecting different priorities was one of the reasons for introduction of the intra-AC prioritization service in the IEEE 802.11aa amendment. However, observations show that as the service is realized by each node independently, with worsening of transmission conditions both types of Video traffic are corrupted. To overcome this issue, basing on two...
Recent results show that slotless, purely-interval based neighbor discovery protocols, in which time is assumed to be continuous, achieve significantly lower worst-case discovery latencies than time-slotted protocols. In slotted protocols, the discovery of device A by B and vice-versa occurs within the same slot, and hence the latencies for one-way and two-way discovery are identical.However, in purely...
The process of two wireless devices meeting over-the-air for the first time is referred to as neighbor discovery. In mobile ad-hoc networks, battery powered devices duty-cycle their radios during neighbor discovery. As a result, they transmit and receive for very short durations of time and sleep at other times.Energy-efficient protocols, which guarantee short, bounded latencies while achieving low...
Aiming at the defects of traditional manual operation and wiring of the traditional lighting system, this paper puts forward a design scheme of LED lighting control system based on ZigBee wireless sensor network technology. With the change of the environment parameters and the preset lighting mode, the system can respond quickly and automatically, and realize the PWM linear non-polar dimming. Based...
Science and technology are progressing with the speed which seems to be unfamiliar to us. What seems to be science-fiction some 30 years ago is now becoming our everyday reality. 3-D printing, O-led technology, modern communication, smart materials, mind recognition etc. How to follow the progress and all novelties and what is more, how to integrate them into the educational systems of high schools...
Remote control of grid tied converters has become important with an increasing number of grid connected energy storage systems. Hence, it is crucial point for utilities to outline the requirements of the communication methods and to find the best communication infrastructure to handle the remotely located converters in a reliable and cost effective manner throughout the operation. The purpose of this...
This paper reports on the design and development of a compact micro-electrocorticography (μECoG) system. The system is designed to record 8 channels of ECoG signals. Recorded neural data are sent off the system through a capacitive data telemetry link to the external world. The system has been prototyped using off-the-shelf electronic components and custom-designed electrodes, link, and package. For...
Today, implantable medical devices play an increasingly important role in improving quality of life for millions of people suffering from brain neurological disorders. In this work, we will review various circuit- and system-level considerations and trade-offs that must be taken into account in design of such systems in order to achieve high-resolution real-time brain electro-physiological activity...
One of the crucial challenges in the recently emerging Internet of Things (IoT) applications is how to handle the massive heterogeneous data generated from a large number of resource-constrained sensors. In this context, cloud computing has emerged as a promising paradigm due to its enormous storage and computing capabilities, thus leading to the IoT-Cloud convergence. In such a framework, IoT devices...
In today's world, wireless communication became the master use in any technology that need transferring of data between devices in far distant places. The problems of paratrooper when they reach the land they are scattered and can't find each other's position quickly. Sometimes paratroops don't find their equipment that is thrown from the plane to the ground. The main objective of this study is to...
In this paper we proposed the method of correcting codes formation based on Residue Number System. The proposed method provides the formation of RNS correcting codes of the input data which is represented in a positional notation.
Wireless assistive technology plays an important role in helping out people with severe disabilities. It helps to provide support in their everyday life and also control their surrounding environment. In this paper, we propose two types of designs for a tongue driven wireless electronic communication device, which are wearable wireless assistive technologies designed for individuals with disabilities...
Motion sensing game is a novel game and operated by body segmental movements. It is respected by the majority of players of all ages because of its excellent interactivity. At present, many companies adopt the method of video capture to implement the collection of movement information, but the cost is much higher. And it also can achieve the accurate control of the game through the sensing technology...
High throughput SDR networking waveforms require fast convergence Automatic Gain Control algorithms due to frequent transmissions in short time slots. In this paper, we propose a novel algorithm for feed-forward AGC with fast convergence and reduced computational complexity. Firstly, the RF front end of Software Defined Radio (SDR) is characterized through the use of vector signal generator. An RF...
Wireless sensor network (WSN) is commonly used for localization applications. Through sniffing receive signal strength indicator (RSSI) in WSN system, localization and connection to access point highest RSSI can be done automatically. In this paper, we propose Raspberry-Pi (RasPi), based best access point selection method utilizing RSSI metric. The RasPi brings the advantages of a personal computer...
With the advent of small satellites and affordable communications hardware, there has been an increase in academic interest in space education. Small satellites are often created with an educational purpose, and they transmit strong signals that are easy to detect. They pass over large areas of the planet a few times a day, providing increased opportunities for successful communication. On the hardware...
Remote control technology has been developed by utilizing various transmission media. Some of them are remote control by the media using infrared, radio, internet and telephone line. Remote control system via the telephone line has an advantage in terms of distance range and practicality compared to other media. The presence of mobile phone or mobile phone that has been known and used by many people,...
This demonstration presents a power-efficient multi-channel physiological signals acquisition system-on-chip (SoC). The proposed system is implemented to achieve continuous real-time processing for acquired bio-signals and analysis the results on computer or mobile devices through wireless transmission by Bluetooth low energy (BLE) protocol. The ultra-low power consumption SoC with features of lightweight,...
Wireless Multimedia Sensor Networks (WMSNs) are composed of the number of video, audio, and scalar sensors which the proposed method is investigated on sensors equipped to cameras. In this paper a new method distributed is introduced for enhancing the environmental multimedia sensing coverage and recording in wireless multimedia sensor networks. In the proposed method nodes are prioritized and selected...
Though several assistive technologies are available for home-based rehabilitation of stroke patients, people are not using the same for several reasons. Lack of technical competence, chance of electrocution is some of such issues. The cables/ wires of different instruments, measuring devises, rehabilitation systems are often the source of infection; causes of electrocution, discomfort and immobility...
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