The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The emergence of wireless sensor networks and its increase in applications call for increasing the number of sensors to extend its functionality. These networks sense and send data periodically hence the need for power management. Two techniques are usually used to extend a node's life namely low power operation and energy harvesting. The power management block would maximize both techniques. A digital...
In this paper, we study the tradeoff of efficiency and delay of Slepian-Wolf distributed source coding (DSC). In the considered network, Machine-Type Communications (MTC) devices transmit correlated data to one base station, the data sources follow a multi-variate Gaussian distribution. To reduce the consumption of communication resources by massive MTC devices, Slepian-Wolf coding is adopted to eliminate...
This paper presents an energy-efficient solution to overcome packet loss in Wireless Sensor Networks (WSNs) by adding seed-based Random Linear Network Coding to MQTT for Sensor Networks (MQTT-SN). Whereas most sensors integrated in common WSN devices consume little energy, using the radio is costly. To increase battery lifetime, devices try to minimize their radio uptime, while still satisfy timeliness...
Wireless powered communications is a promising technology for next-generation low-powered sensor networks such as the Internet of Things. This paper deals with backscatter communications in sensor networks, an ideal technology for low-powered battery-less devices. However, in contrast to conventional communications, backscattering suffers from collisions due to multiple concurrent transmissions and...
Energy efficiency and reliability are a pair of the most important factors in wireless sensor networks (WSNs). Recent research results have demonstrated that the previously suggested scheme of the joint network-coding-compressive-sensing can greatly improve the energy efficiency and the communication reliability of WSNs. In this paper, we propose a practical scheme, Non-Binary Joint Network-Coding...
In this poster, we investigate the problem of scheduling mobile chargers in roadside wireless rechargeable sensor network. Taking mobility constraints caused by city topological graph into consideration, we aim at optimizing the traveling path for chargers to minimize the traveling cost. erefore, the scheduling problem is converted into edge coverage problem, which is substantially dierent from the...
We develop a random binning scheme for strong coordination in a network of two nodes separated by a noisy channel, in which the input and output signals have to be coordinated with the source and its reconstruction. In the case of non-causal encoding and decoding, we propose a joint source-channel coding scheme and develop inner and outer bounds for the strong coordination region. While the set of...
Interference between concurrent transmissions causes severe performance degradation in a wireless network. This paper addresses interference cancellation to enable simultaneous packet receptions at a node with a single radio in Wireless Sensor Networks (WSN). Interference cancellation is particularly important for WSN as most of its applications rely on convergecast where all the traffic in the network...
In this paper, the secrecy outage performance of an underlay cognitive decode-and-forward (DF) relay network over independent and non-identical distributed (i.n.i.d) Nakagami-m fading channels is investigated, in which the secondary user transmitter communicates with the secondary destination via relays, and an eavesdropper attempts to overhear the information. We assume that the channel state information...
In this paper, we consider a multiuser multiple-input single-output downlink system for Simultaneous Wireless Information and Power Transfer(SWIPT). Different from the conventional battery-free power splitting strategy, the harvested energy can be buffered in a battery before consumption. Accordingly, increasing battery lifetime, where the base station is powered by sustainable energy. A sum rate...
Wireless transceiver is a mandatory component of any kind of wireless sensors. Inside wireless transceiver, Viterbi decoder (VD) is needed to improve the decoding performance of the transceiver. In this paper, we propose a low complexity Viterbi decoder algorithm for wireless sensors that aim to support Internet of Thing (IoT) applications. Our algorithm is named as K-min Viterbi decoder because only...
Selection cooperation is a preferable cooperative scheme for wireless sensor networks (WSNs) for its simplification and easy implementation. In this paper, we present a selection cooperation experimental platform (CEP) based on IEEE 802.15.4 WSNs using cheap radios. This work concentrates on employing the lightweight selection cooperation protocol (LSCP) with feedback to govern the cooperation between...
Low capacity, bulky size and wiring limitations of the conventional wireless multi-channel electroencephalography (EEG) system restrict its use as brain neuromonitoring system. To reduce such restriction, this paper proposes an EEG system based on multi-input multi-output (MIMO) technique and polar coded data. In the proposed system, all the channels are sent and received simultaneously, while the...
A new approach for a battery-less 915MHz ISM band wake-up receiver with digital decoder for wireless sensor network is designed and presented. The proposed receiver architecture is based on a differential rectifier with gate-driver circuit using an ON-OFF Keying modulation for the input signal. To enhance the power conversion efficiency (PCE) of the rectifier for the low input power level, appropriate...
In this paper, we study optimal resource allocation strategies focusing on the system energy efficiency with simultaneous power transfer and information decoding operation at the access point (AP). We consider a three node wireless system that consists of the AP, energy harvesting user (EHU) and non-energy harvesting user (N-EHU), and EHU opportunistically harvests energy from N-EHU and the AP. Using...
This paper analyzes a novel multiple-input single- output (MISO) simultaneous wireless information and power transfer (SWIPT) system model in the presence of an active eavesdropper over the frequency-selective fading channel. In this model, a transmitter applies the time reversal (TR) beamforming technique to combat the fading effects whereas a legitimate user employs a power splitter to jointly receive...
Error-Control Coding (ECC) now plays an important role in wireless transceivers because it helps to increase link reliability and lower required transmit power. One popular problem of ECC implementation is the trade-off between high coding-gain and decoder's complexity. In this paper, we propose a serial concatenated ECC solution which is a combination of truncated-iteration layered-decoding LDPC...
In this paper, we propose a hybrid time switching and power splitting spectrum sharing protocol for energy harvesting wireless sensor nodes. Specifically, we use an approach of simultaneous energy harvesting and spectrum access to alleviate the major concerns of wireless sensor nodes such as limited power and spectrum. In the developed framework, an energy constrained sensor node adopts a time switching...
This paper addresses distributed finite-rate quantized compressed sensing (QCS) acquisition of correlated sparse sources in wireless sensor networks. We propose a distributed variable-rate QCS compression method with complexity-constrained encoding to minimize a weighted sum of the mean square error distortion of the signal reconstruction and the average encoding rate. The variable-rate coding is...
The binary chief executive officer (CEO) problem with an arbitrary number of agents is considered in this paper. A scheme which separates the reconstruction of observations and the final decision of a common source is assumed. Hence, we first derive the outer bound for the rate- distortion region by providing the converse proof of a binary multiterminal source coding problem which is the key to solve...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.