Broadcasting in Cognitive Radio Networks: A Fountain Codes Approach

• Published in: IEEE transactions on vehicular technology Vol. 71; no. 10; pp. 11289 - 11294
• Main Authors: Tu, Lam-Thanh, Nguyen, Tan N., Duy, Tran Trung, Tran, Phuong T., Voznak, Miroslav, Aravanis, Alexis I.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.10.2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE); Institute of Electrical and Electronics Engineers
• Subjects: Broadcasting; Clocks; Closed form solutions; Cognitive radio; Distribution functions; Engineering Sciences; Exact solutions; fountain codes; Interference; Networks; Optimization; Parameters; performance analysis; Performance measurement; Protocols; Quality of service; Quality of service architectures; Radio broadcasting; Receivers; Signal and Image processing; Signal to noise ratio; Broadcasting; fountain codes; cognitive radio; performance analysis
• ISSN: 0018-9545; 1939-9359
• DOI: 10.1109/TVT.2022.3188969

The present paper addresses the performance of the broadcasting scheme in cognitive radio networks (CRNs) under a fountain codes (FC) approach. Particularly, closed-form expressions are derived for the cumulative distribution function (CDF) and the expectation of the number of FC clock cycles required for broadcasting packets to all secondary receivers. The energy efficiency (EE) of the secondary networks (SN) is also provided. Moreover, a simple transmit power scheme is proposed to enhance the performance of the SN and guarantee the quality-of-service (QoS) of the primary network (PN). The trends of the introduced closed-form performance metrics are then examined versus important network parameters allowing for the optimization of those parameters. Finally, numerical results are provided to confirm the accuracy of the derived mathematical framework and the superior performance of the introduced FC scheme over uncoded broadcasting protocols.