NDLI: Interference mitigation and capacity enhancement of cognitive radio networks using modified greedy algorithm/channel assignment and power allocation techniques

Content Provider	IET Digital Library
Author	Ranjan, Rajeev Agrawal, Navneet Joshi, Sunil
Abstract	Cognitive radio (CR) concept is turning out as a prominent approach used in the wireless communication network for increasing spectrum efficiency by opportunistically and mutually sharing the spectrum of contemporary networks. CR can bear high traffic loads during emergencies and major disasters by overcoming the limitations like lack of network capacity. The fundamental issues pertaining the implementation of CR network (CRN) are the presence of co-channel interference and adjacent channel interference among CR users; and most importantly interference to primary users. Effective interference mitigation and management in CRN will make it more robust in easing the additional stress because of very high traffic loads during an intense emergency and disaster scenarios. In this study, an approach has been taken to minimise interference among secondary nodes by employing interference index as interference minimisation key which in turn maximises the system capacity. To validate the results, the authors thoroughly used an existing distributed greedy algorithm, which, on the introduction of interference index, furnished a gain of 60% in the CR network capacity. Further, a trade-off analysis between the interference index and channel leakage ratio is presented with an interference bound of 10 dBm, which may form the basis of interference management in CRN.
Starting Page	1502
Ending Page	1509
Page Count	8
ISSN	17518628
Volume Number	14
e-ISSN	17518636
Issue Number	Issue 9, Jun (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/14/9
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2018.5950
Journal	IET Communications
Publisher Date	2020-03-16
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adjacent Channel Interference Capacity Enhancement Channel Allocation Channel Leakage Ratio Cochannel Interference Cognitive Radio Cognitive Radio Network Contemporary Network CR Network Capacity CR User CRN Disaster Scenarios Electromagnetic Compatibility Existing Distributed Greedy Algorithm Greedy Algorithm High Traffic Load Intense Emergency Interference Interference Index Interference Management Interference Minimisation Key Interference Suppression Mobile Radio System Optimisation Technique Power Allocation Technique Primary User Prominent Approach Radio Frequency Interference Radio Link And Equipment Radio Network Spectrum Efficiency System Capacity Wireless Communication Network
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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