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On Optimal Sensing and Capacity Trade-off in Cognitive Radio Systems with Directional Antennas

Abstract: 

We consider a cognitive radio system, in which the secondary users (SUs) and primary users (PUs) coexist. The SUs are equipped with steerable directional antennas. In our system, the secondary transmitter (SUtx) first senses the spectrum (with errors) for a duration of τ, and, then transmits data to the secondary receiver (SUrx) if spectrum is sensed idle. The sensing time as well as the orientation of SUtx's antenna affect the accuracy of spectrum sensing and yield a trade-off between spectrum sensing and capacity of the secondary network. We formulate the ergodic capacity of secondary network which uses energy detection for spectrum sensing. We obtain optimal SUtx transmit power, the optimal sensing time τ and the optimal directions of SUtx transmit antenna and SUrx receive antenna by maximizing the ergodic capacity, subject to peak transmit power and outage interference probability constraints. Our simulation results show the effectiveness of these optimizations to increase the ergodic capacity of the secondary network.

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Paper Details

Authors:
Hassan Yazdani, Azadeh Vosoughi
Submitted On:
27 November 2018 - 1:22am
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Type:
Presentation Slides
Event:
Presenter's Name:
Hassan Yazdani
Paper Code:
1088
Document Year:
2018
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Hassan Yazdani GlobalSIP 2018 - 6.pdf

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[1] Hassan Yazdani, Azadeh Vosoughi, "On Optimal Sensing and Capacity Trade-off in Cognitive Radio Systems with Directional Antennas", IEEE SigPort, 2018. [Online]. Available: http://sigport.org/3758. Accessed: Apr. 22, 2019.
@article{3758-18,
url = {http://sigport.org/3758},
author = {Hassan Yazdani; Azadeh Vosoughi },
publisher = {IEEE SigPort},
title = {On Optimal Sensing and Capacity Trade-off in Cognitive Radio Systems with Directional Antennas},
year = {2018} }
TY - EJOUR
T1 - On Optimal Sensing and Capacity Trade-off in Cognitive Radio Systems with Directional Antennas
AU - Hassan Yazdani; Azadeh Vosoughi
PY - 2018
PB - IEEE SigPort
UR - http://sigport.org/3758
ER -
Hassan Yazdani, Azadeh Vosoughi. (2018). On Optimal Sensing and Capacity Trade-off in Cognitive Radio Systems with Directional Antennas. IEEE SigPort. http://sigport.org/3758
Hassan Yazdani, Azadeh Vosoughi, 2018. On Optimal Sensing and Capacity Trade-off in Cognitive Radio Systems with Directional Antennas. Available at: http://sigport.org/3758.
Hassan Yazdani, Azadeh Vosoughi. (2018). "On Optimal Sensing and Capacity Trade-off in Cognitive Radio Systems with Directional Antennas." Web.
1. Hassan Yazdani, Azadeh Vosoughi. On Optimal Sensing and Capacity Trade-off in Cognitive Radio Systems with Directional Antennas [Internet]. IEEE SigPort; 2018. Available from : http://sigport.org/3758