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Recently, applying the multimedia wireless sensor networks and computer vision techniques in the outdoor agriculture field can be observed. Since the performance of such techniques is limited by the low data rate of the wireless sensor network, the transmission using the wider bandwidth is one of the possible solutions. This paper proposes the technique to develop the wide-band channel sounder for...
Wi-Fi enabled hand-held devices have quickly occupied the consumer market as a result of the remarkable customer acceptance of IEEE 802.11 standard. In this regard, the demand of high throughput introduces high throughput standards such as IEEE 802.11ac. It supports Dynamic Bandwidth Channel Access (DBCA), where a wireless station selects channel bandwidth dynamically based on the availability of...
The LPWAN (Low Power Wide Area Network) networks are the evolution of wireless sensor networks directed to the IoT (Internet of Things) concept, which entails sensor connectivity to the Internet. This paper presents a performance evaluation of the LoRa wireless networks. LoRa technology represents a possible solution to the problems of the IoT (Internet of Things) concept. The used frequency bands...
The paper presents the design and implementation of an integrated wireless network that support to the multiparametric geophysical monitoring network of the Campi Flegrei volcanic area. The wireless network is equipped with a tool for real-time monitoring and fault detection. The enhancement of the transmission system with respect to the previously existing one has been realized in view of the increased...
VANET and cognitive radio network (CRN) are both new emerging technologies in wireless networking. The application of CR concept in wireless communication systems for intelligent vehicles has been envisioned as a promising idea towards solving the problem of scarce spectrum. This paper discusses CR technologies for VANETs aimed at opportunistic spectrum access (OSA) for improved vehicular communication...
The advances in wireless low-power sensors and the increasing demand for portable healthcare monitoring systems have inspired the realization of Wireless Body Sensor Networks (WBSNs). IEEE Std. 802.15.6 defines the communication protocol for WBSN applications in terms of physical and medium access layers. The high generality and flexibility of standard requirements poses the question of how WBSN parameters,...
This paper investigates the use of ultra-wideband (UWB) radio for communication in industrial wireless sensor networks (WSNs). OpenWSN is an open-source IPv6 mesh network protocol stack based on IEEE 802.15.4 time slotted channel hopping (TSCH). We adapted OpenWSN to operate an UWB physical layer based on the DecaWave DW1000 UWB transceiver. Experiments were conducted in an industrial steam heating...
The steadily growing use of license-free frequency bands requires reliable coexistence management for deterministic medium utilization. For interference avoidance, proper wireless interference identification (WII) is essential. In this work we propose the first WII approach based upon deep convolutional neural networks (CNNs). The CNN naively learns its features through self-optimization during an...
The paper presents an exhaustive visualization of different problems encountered in efficient utilization of spectrum for advanced wireless communication. It is a well known fact that there is a crisis for available radio spectrum due to incredible expansion and advancement of the communication systems and technologies. But in reality, there is no shortage of available spectrum but only lack of advance...
Street light poles will be a key enabler for a smart city’s hardware infrastructure, thanks to their ubiquity throughout the city as well as access to power. We propose an IoT test bed around light poles for the city, with a modular hardware and so ware architecture to enable experimentation with various technologies.
We study random access for machine-type commu- nications (MTC) based on the notion of compressive sensing (CS) over a distributed input distributed output (DIDO) system consisting of a number of remote radio heads (RRHs) that are closely located to devices. In a DIDO system, each active device can have a signature that depends on its connectivity to RRHs and the signatures of active devices are estimated...
Machine-to-machine (M2M) communication is one of the latest technologies to support connectivity among numerous intelligent devices. The intelligence of M2M systems can be enhanced by incorporating visual sensor networks (VSNs) and utilising visual information. The conservation of energy within VSNs is one of the primary concerns for resource constrained scenarios, which can be achieved from targeted...
Wireless sensor networks have significant limitationsin available bandwidth and energy. The limited bandwidthin sensor networks can cause higher message delivery latencyin applications such as monitoring poisonous gas leak. In suchapplications, there are multi-modal sensors whose values such astemperature, gas concentration, location and CO2 level need tobe transmitted together for faster detection...
Recently, wireless sensor in the video surveillance system plays an important role, but the sensor operation is limited by battery capacity. Obviously, the technique to reduce power consumption is necessary. In this paper, a novel lossless embedded compression (EC) algorithm is proposed to reduce the memory bandwidth in video coding. It comprises two core techniques of Multi-directional Gradient Detection...
By placing processing-capable devices at the edge of local wireless access networks, Edge Computing architectures have been recently proposed to connect mobile devices to computational power through a one-hop low-latency wireless link. In this paper, we propose a new design where edge assistance is used to control local data filtering at the mobile devices in bandwidth and energy constrained systems...
Wireless sensor networks (WSNs) have significant limitations in available bandwidth and energy. The limited bandwidth in sensor networks can cause higher message delivery latency. In this demo, we demonstrate working of novel Zorder based data compression schemes (Z- compression) to reduce energy and save bandwidth without increasing the message delivery latency using a TelosB motes based sensor network...
Wireless Sensor Networks suffer from the limited bandwidth and power resources such as: energy, memory, CPU. Geographic multicast routing is appropriate for this kind of networks since it avoids the flooding request packets to all nodes to find destinations, which consumes a lot of energy and bandwidth. However, the problem with the geographic multicast routing is the expensive computationally cost...
Using drones as flying base stations is a promising approach to enhance the network coverage and area capacity by moving supply towards demand when required. However deployment of such base stations can face some restrictions that need to be considered. One of the limitations in drone base stations (drone-BSs) deployment is the availability of reliable wireless backhaul link. This paper investigates...
Based on observations that the visual quality has strong correlation with image gradients, gradient based image SoftCast (G-Cast) advocates to convey visual information by delivering image gradients. In G-Cast, both horizontal gradients and vertical gradients needs to be transmitted, even if the channel bandwidth is insufficient. This paper propose to send out the random projection measurements of...
Virtual Sensor Networks (VSNs) envision the creation of general purpose wireless sensor networks which can be easily adapted and configured to support multifold applications with heterogeneous requirements, in contrast with the classical approach of wireless sensor networks vertically optimized on one specific task/service. The very heart of VSNs' vision is the capability to dynamically allocate shared...
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