Optimizing SU Transmission Time Under Collision Constraint Considering PU Returns

Mohammadreza AminiDepartment of Electrical Engineering, College of Engineering, Borujerd Branch, Islamic Azad University, Borujerd, IranView further author information

Farzad HematiDepartment of Electrical Engineering, College of Engineering, Borujerd Branch, Islamic Azad University, Borujerd, IranView further author information

Asra MirzavandiDepartment of Electrical Engineering, College of Engineering, Yazd Branch, Islamic Azad University, Yazd, IranView further author information

ABSTRACT

There are many studies in cognitive radio networks to find the best transmission time for secondary users (SUs) to maximize transmission or energy efficiency. Increasing sensing duration leads to higher sensing accuracy and less interference. However, it decreases SUs' transmission time and increases energy consumptions for spectrum sensing. Conversely, longer transmission duration results in more opportunities for SUs to access the channel and reasonably higher interference with primary user (PU) due to the higher probability of PU returns. This paper presents an analytical framework based on the renewal process for SU spectrum access. Next, the amount of the interference between PU and SU that is due to the PU returns is derived analytically. The probability of the collision and the transmission efficiency are formulated to obtain the optimum transmission time.

Keywords:

ACKNOWLEDGEMENTS

This study was supported by Islamic Azad University, Borujerd Branch, Iran. The authors would like to acknowledge the staff of the university.

Additional information

Notes on contributors

Mohammadreza Amini

Mohammadreza Amini was born in 1981. He is an Iranian telecommunication researcher. He is an academic member of Islamic Azad University, Borujerd Branch, Iran. Email: [email protected]

Farzad Hemati

Farzad Hemati was born in 1983. He is an Iranian computer science researcher. He is an academic member of Islamic Azad University, Borujerd Branch, Iran. Email: [email protected]

Asra Mirzavandi

Asra Mirzavandi was born in 1989. She is an Iranian telecommunication and electronics researcher. She is a student member of Islamic Azad University, Yazd Branch, Iran. Email: [email protected]

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Order Reprints Request Corporate Permissions

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

Request Academic Permissions

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.