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Wireless Sensor Network (WSN) have been attracting increasing interest for supporting a new generation of ubiquitous computing systems with great potential for many applications. However, the communication paradigms in WSNs differ from the ones associated to traditional wireless networks, triggering the need for efficient wireless communication technology. Several wireless technologies have emerged...
Data compression on sensing data in Wireless Sensor Networks (WSNs) has long been the topic of extensive research in the last decade. Especially, in video sensor networks, the video and image data that need to be transmitted are relatively larger than common data. However WSNs usually have limited power supply and constrained communication bandwidth, it is significant to reduce the video and image...
In this paper, we employ distributed jointed source-channel (DJSC) coding based on quasi-cyclic low-density parity-check (QC-LDPC) codes in our wireless sensor network (WSN) for seismic exploration. In order to reduce the latency of jointed decoding, we propose a parallel structure of jointed decoding, and decoders of multiple sources can decode simultaneously. We make use of the soft information...
Low-density generator matrix (LDGM) codes can be generated through instantaneous network topology with XOR operation at each node in original adaptive network coded cooperation (ANCC). Regular LDGM codes exhibit tradeoff nature between error floor and convergence threshold due to the low weight columns in the resulting parity check matrix. In this paper, we propose a scheme called serially-concatenated...
Space-time coding (STC) applied for multiple antenna systems has proved very important in attaining better diversity and multiplexing gains. Recently, virtual antenna system is emerging as a solution for spatially constrained wireless terminals to compensate for the lost benefit from the incapability of multiple antenna installation. Distributed space-time coding (DSTC) is the STC counterpart applied...
Network lifetime improvement of multi-hop wireless sensor networks is a challenging problem. In fact, the network lifetime can be extended by energy saving techniques such as energy-efficient protocols. However, one of the most promising research directions to overcome the network lifetime problem is the compression. Indeed, compression consists in minimizing the size of packets transmitted by the...
Sensor data collection through clustering mechanisms has become a common strategy in Wireless Sensor Networks (WSN). Usually in WSNs the clusters are formed dynamically and repeatedly to get uniform utilization of energy. It has been seen in many large scale dynamic cluster based WSNs that the sizes of clusters, in terms of number of nodes, show high variance. This affects the data aggregation mechanism...
Reliability has become one of the most vital requirements in wireless sensor networks (WSNs). One efficient way to increase the reliability is by using erasure coding techniques such as Reed-Solomon/Cauchy Reed-Solomon. The problem is the time required for encoding and decoding the data words, especially when large amount of data need to be sent like in complex WSN applications. In this paper, we...
We present an innovative scheme for performing pattern recognition in wireless sensor networks. It is based on the concept of a distributed computer that can alter itself to adjust to the user's needs. By emulating the distributed nature of biological computational devices and evenly spreading the computational and communication workload throughout the network, we will reduce energy consumption and...
WiFi access points, mesh routers, wireless sensors and any other wireless routers along the road can serve as roadside unit (RSU), and these RSUs can provide infrastructural supports for wireless access and data dissemination in cyber-transportation systems. We present a hybrid routing scheme in vehicular networks for inter-vehicle, vehicle-to-roadside and inter-roadside data dissemination in urban...
Mobile Health (mHealth) systems leverage wireless and mobile communication technologies to provide healthcare stakeholders with innovative tools and solutions that can revolutionize healthcare provisioning. Body Area Sensor Networks (BASNs) is part of the mHealth system that focuses on the acquisition by a group of biomedical sensors of vital signals. However, the design and operation of BASNs are...
The main objective of this paper is to present realistic energy consumption models to evaluate the energy consumption including both the transmission energy and the circuit energy at the transmitter when using Minimum Energy coding (ME-coding) On-Off Keying (OOK) scheme, we consider a simple communication link between sensor nodes. We present two energy models with a specific circuit (MAX1472) and...
In this paper, we present a uniform Electronic Product Coding (EPC) scheme to identify IEEE 1451 compatible transducers in Internet of Things (IoT) applications. IEEE 1451 is a series of standards that support plug-and-play smart transducers to fulfill standardization of legacy sensors and actuators. EPCglobal has released a collection of specification standards, known as EPCglobal architecture framework...
The subject of this paper includes the effect of MAC performance analysis for IEEE 802.15.4 protocol with BCH coding. To analyse the performance, data transmissions are made for different communication environments with different scenarious using BCH coding. Performance results are observed as changing values on MAC parameters. These parameters are composed of average transmission time, transmitted...
In this paper, we consider the problem of remote vector Gaussian source coding for a wireless acoustic sensor network. Each node receives messages from multiple nodes in the network and decodes these messages using its own measurement of the sound field as side information. The node's measurement and the estimates of the source resulting from decoding the received messages are then jointly encoded...
This paper presents the design and simulation of the front-end low power transmitter for wireless sensor network application. The transmitter features simple circuitry with circuit techniques that reduce the power consumption and gives higher efficiency. The used modulation scheme is a modified version of ASK with better continuity to make it eligible for Wireless Passive Sensor Networks applications...
In recent years, automated meter reading systems (AMR) are being utilized in most developed countries like the United States and other European countries. The advantages these electric metering system offers make it a more accurate measuring device than the conventional electromechanical meter reading system being used in developing countries like the Philippines. AMRs capacity to automatically transmit...
Image quality measures try to quantify a visual quality or analogically, an amount of distortion in a given picture. This thesis work proposes a moment based image quality assessment metric that automatically assesses the quality of an image in the discrete orthogonal moments domain. In this work, the discrete orthogonal moment namely, a Tchebichef moment is chosen and quality measure is developed...
Wireless video sensor networks (WVSN) are foreseen to be a key driver of the development of pervasive applications of every-day life. They trigger very challenging problems due to their constrained nature in terms of energy, bandwidth, processing and storage means. In order to be able to assess the performances of their proposals, WVSN's researchers community needs a transmission and evaluation tool...
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