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Intelligent Transportation System (ITS) is integral towards envisioning a truly mobile and digital India. While existing solutions like smart vehicles and autonomous driving are inapplicable for Indian cities, transport surveys in India have provided offline solutions through GPS data. Without analytical formulations, they are prone to failure in ever-changing Indian urban landscape. This paper addresses...
Cognitive radio networks (CRN) have paved the way toward the increase in spectrum utilization through opportunistic usage of available idle spectrum bands. However, its capacity is bounded by various factors, including channel characteristics, licensed user behavior, application requirements, etc. Currently, a fixed upper bound of the system capacity in CRN limits further progress in research in this...
Cognitive Radio Network (CRN) aims to solve the problem of spectrum congestion by allowing opportunistic use of idle spectrum bands by secondary users (SUs) in the absence of primary users (PUs). Channel reservation policies have been proposed in this regard to ensure maximum throughput for these SUs, while minimizing their interference with PUs. However, these algorithms always reserve a fixed number...
Cognitive Radio Network (CRN) ensures higher utilization of spectrum by allowing secondary users to transmit in licensed frequency bands in absence of primary users. In order to reduce interference among these users, CRN imposes a maximum limit on total number of users that can be admitted in CRN. The overall user capacity is further increased by implementing VoIP based 2-tier CRN that allows another...
VoIP service demands strong QoS support for enhanced call quality and increased user satisfaction. Deploying VoIP in opportunistic communication models like cognitive radio requires thorough analysis of the factors involved in design and implementation. The objective of this paper is to implement VoIP successfully over a cognitive radio network and maintain the call quality at an acceptable limit...
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