Receiver Autonomous Integrity Monitoring of GNSS Signals for Electronic Toll Collection Abstract?Receiver Autonomous Integrity Monitoring of GNSS Signals for Electronic Toll Collection. Various road user charging mechanisms are used to control traffic and its resulting pollution, as well as revenue sources for reinvestment in the road infrastructure. Among them, electronic toll collection (ETC) systems based…
Reduced-Complexity Robust MIMO Decoders Abstract? Reduced-Complexity Robust MIMO Decoders. We propose a robust near maximum-likelihood (ML) decoding metric that is robust to channel estimation errors and is near optimal with respect to symbol error rate (SER). The solution involves an exhaustive search through all possible transmitted signal vectors; this search has exponential complexity, < Final...
Reducing Pointing Errors in Free-Space Optical Communication Links over Turbulences with a Partially Coherent Gaussian Beam Abstract?Abstract We present joint investigation of the effects of a spatially partially coherent Gaussian beam and aperture averaging on the performance of free-space optical (FSO) communication systems from an information theory perspective. A theoretical model is proposed to determine…
Reliability Oriented Single path Routing Protocols in Wireless Sensor Networks Abstract?Wireless sensor networks (WSNs) bring significant advantages over traditional communications in today’s applications, such as environmental monitoring, homeland security, and health care. However, harsh and complex environments pose great challenges in the reliability of WSN communications. To achieve reliable wireless communications within WSNs, it is…
Resource Allocation for Multiple-Sources Single-Relay Cooperative Communication OFDMA Systems Abstract? Joint allocation of resources, namely subcarrier assignment and power profiles at the source and relay nodes, is considered for both relaying schemes amplify and forward (AF) and decode and forward (DF) with multiple users using orthogonal frequency division multiple access (OFDMA). The objective is to…
Resource Allocation in Non-Orthogonal and Hybrid Multiple Access System with Proportional Rate Constraint Abstract– Non-orthogonal multiple access (NOMA) has attracted a lot of attention recently due to its superior spectral efficiency and could play a vital role in improving the capacity of future networks. In this paper, a resource allocation scheme is developed for a…
RSSI-based Localization Algorithms using Spatial Diversity in Wireless Sensor Networks. Abstract? Wireless sensor network localization is an important area that attracted significant research interest. Recently, received signal strength indicator (RSSI)-based range measurement technology is widely used in sensor network for its low-cost. But the radio signal transmission is influenced by the factors of channel attenuation…
Secrecy Outage on Transmit Antenna Selection/Maximal Ratio Combining in MIMO Cognitive Radio Networks Abstract? the secrecy outage performance of transmit antenna selection (TAS)/maximal ratio combining (MRC) in multiple-input?multiple-output (MIMO) cognitive radio networks (CRNs) over Rayleigh fading channels. In the considered system, a secondary user (SU-TX) equipped with NA (NA ? 1) antennas uses TAS to…
Secure Transmission in Cooperative Relaying Networks With Multiple Antennas Abstract? The secrecy performance of dual-hop amplify-and-forward multi-antenna relaying systems over Rayleigh fading channels, considering the direct link between the source and the destination. In order to exploit the available direct link and the multiple antennas for secrecy improvement, different linear processing schemes at the relay…
Self-Deployment of Mobile Sensors to Achieve Target Coverage in the Presence of Obstacles Abstract? Target coverage is one of the major requirements in wireless sensor network applications, the purpose of which is to monitor a set of known targets in the region of interest. In this paper, we propose a localized self-deployment scheme, named as…
Simultaneous Sensing and Transmission for Cognitive Radios With Imperfect Signal Cancellation Abstract-In conventional cognitive radio systems, the secondary user employs a ?listen-before-talk? paradigm, where it senses if the primary user is active or idle, before it decide to access the licensed spectrum. However, this method faces challenges, with the most important one being the reduction…
Optimizing Cloud-Service Performance: Efficient Resource Provisioning via Optimal Workload Allocation Abstract-Cloud computing is being widely accepted and utilized in the business world. From the perspective of businesses utilizing the cloud, it is critical to meet their customers? requirements by achieving service-level-objectives. Hence, the ability to accurately characterize and optimize cloud-service performance is of great importance….
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