Spectrum Sensing using Single Ring Law
Dhana Lakshmi Potteti1, Venkateswara Rao N2

1Dhana Lakshmi Potteti, Department of Electronics and Communication Engineering, Acharya Nagarjuna University, Guntur (A.P), India.
2Venkateswara Rao N, Department of Electronics and Communication Engineering, Bapatla Engineering College, Bapatla (A.P), India.
Manuscript received on 05 February 2019 | Revised Manuscript received on 13 February 2019 | Manuscript published on 28 February 2019 | PP: 531-534 | Volume-8 Issue-4, February 2019 | Retrieval Number: D2879028419/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: The concept of cognitive radio is becoming increasing popular as it is a prominent solution for spectrum scarcity problem. A smart and wise usage of available spectral resources is an interesting feature of cognitive radio. In the terminology of cognitive radio, a primary (licensed) user and a secondary (unlicensed) user are usually heard. A secondary user transmits data only if the primary user does not use the alloted spectral resources. For sensing the presence or absence of the primary user, spectrum sensing is necessary. Conventionally many techniques such as energy detection (ED), eigenvalue based approaches have been designed for spectrum sensing. Recently large random matrix theory based analytics has shown that Single Ring Law (SRL) can be an effective solution for binary hypothesis testing problems. Hence, in this paper spectrum sensing for multiple antenna system is investigated using SRL based parameters. In Rayleigh and Nakagami fading channels, the SRL based detection is employed and has been found to be a consistent tool for spectrum sensing.
Keyword: Spectrum Sensing, Single Ring Law, Detection Probability, Opportunistic Spectrum Access, Secondary User, Energy Detection.
Scope of the Article: Remote Sensing