A Review on SDR, Spectrum Sensing, and CR-based IoT in Cognitive Radio Networks

Autor:	Abdeslam En-Nouaary, Slimane Bah, Nadia Kassri, Hajar Baghdadi
Rok vydání:	2021
Předmět:	General Computer Science Computer science business.industry media_common.quotation_subject Context (language use) Software-defined radio Spectrum management Frequency allocation Scarcity Resource (project management) Cognitive radio Wireless Telecommunications business media_common
Zdroj:	International Journal of Advanced Computer Science and Applications. 12
ISSN:	2156-5570 2158-107X
DOI:	10.14569/ijacsa.2021.0120613
Popis:	The inherent scarcity of frequency spectrum, along with the fixed spectrum allocation adopted policy, has led to a dire shortage of this indispensable resource. Furthermore, with the tremendous growth of wireless applications, this problem is intensified as the unlicensed frequency spectrum becomes overcrowded and unable to meet the requirement of emerging radio devices operating at higher data rates. Additionally, the already assigned spectrum is underutilized. That has prompted researchers to look for a way to address spectrum scarcity and enable efficient use of the available spectrum. In this context, Cognitive Radio (CR) technology has been proposed as a potential means to overcome this issue by introducing opportunistic usage to less congested portions of the licensed spectrum. In addition to outlining the fundamentals of Cognitive Radio, including Dynamic Spectrum Access (DSA) paradigms and CR functions, this paper has a three-fold objective: first, providing an overview of Software Defined Radio (SDR), in which the architecture, benefits, and ongoing challenges of SDR are presented; second, giving an extensive review of spectrum sensing, covering sensing types, narrowband and wideband sensing schemes with their pros and cons, Machine Learning-based sensing, and open issues that need to be further addressed in this field; third, exploring the use of Cognitive Radio in the Internet of Things (IoT) while highlighting the crucial contribution of CR in enabling IoT. This Review is elaborated in an informative fashion to help new researchers entering the area of Cognitive Radio Networks (CRN) to easily get involved.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::353ea26d848c11b62810a71f28871465 https://doi.org/10.14569/ijacsa.2021.0120613 Zobrazit plný text záznamu