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Large-scale multiple input multiple output (MIMO) wireless system is regarded as a solution to provide high speed connection for exponentially increasing wireless subscriptions for emerging cyber-physical systems (CPSs) and Internet of Things. In order to realize its full potential, there are several challenges to be addressed to achieve high secrecy rate or data rate. In this paper, we analyze outage...
Cognitive radio network (CRN) is regarded as an emerging technology for better spectrum efficiency where unlicensed secondary users (SUs) sense RF spectrum to find idle channels and access them opportunistically without causing any harmful interference to licensed primary users (PUs). However, RF spectrum sensing and sharing along with reconfigurable capabilities of SUs bring severe security vulnerabilities...
Wireless virtualization is regarded as an emerging paradigm for enhancing radio frequency (RF) spectrum utilization through slicing of primary wireless resources in heterogeneous networks (HetNets). In this paper, we study the creation of virtual wireless networks through wireless virtualization for mobile virtual network operators (MVNOs) where portion of the primary bandwidth is sliced and leased...
We study stable wireless link scheduling under the physical interference model in wireless networks. Given a set of elastic wireless communication requests arriving in an online fashion, the objective is to perform link scheduling to maximize the network throughput capacity. This well-motivated problem under an arbitrary physical interference model is notoriously hard. In this work, we develop efficient...
Spectrum sensing is a critical component for cognitive radio networks. Most of the spectrum sensing algorithms and performance analysis, however, assume that the secondary users are stationary. In this paper, we investigate the performance analysis of spectrum sensing by mobile secondary users. Two performance metrics, false alarm probability and miss detection probability, are thoroughly investigated...
For wireless networks, coverage with different restrictions that can capture the practical requirements have received great research interests. We will study several restricted coverage problems. The first problem is about K-coverage, i.e., how to deploy wireless nodes such that each target is covered by at least K wireless nodes. We study the problem restricted to linear-A"-coverage where there...
This paper introduces a high-performance vehicle detection algorithm for a parking management system based on wireless sensor technology. The parking lot is represented as a wireless sensor network cluster modeled as an m ?? n grid in a rectangle of size I ?? h. A wireless sensor node is deployed in each grid and one gateway is set for the cluster. The status of each parking space is detected by a...
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