Paper Info
Title
On Throughput Maximization in Cognitive Radio Networks with Residual Bandwidth
Abstract
Recent progress in cognitive radio networks (CRNs) promises to meet device-to-device communication requirements for spectrum utilisation and power control to support billions of machines/devices to be connected worldwide. The architecture of the CRN must maintain a high data rate (throughput) at low power consumption, which requires both spectrum efficient and energy efficient system design. To this aim, the proposed work adopts a CRN model, which operates in an interweave mode that allows spectrum sensing followed by opportunistic secondary user (SU) data transmission over the unused bandwidth of the primary user (PU) in a non-overlapping frame structure. Closed form expressions of the optimal spectrum sensing duration, bandwidth, and power allocation of each secondary node are obtained to maximise the sum throughput of the overall CRN while maintaining the constraints of sensing reliability of PU, individual SU transmission outage probability, permissible interference, and residual bandwidth. Numerical results highlight that the proposed scheme maximises the sum network throughput by <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><alternatives><tex-math notation="LaTeX">$\sim 50.54$</tex-math><mml:math overflow="scroll"><mml:mo>∼</mml:mo><mml:mn>50.54</mml:mn></mml:math><inline-graphic xlink:href="IET-COM.2018.5928.IM1.gif"/></alternatives></inline-formula> and <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><alternatives><tex-math notation="LaTeX">$\sim 63.76\%$</tex-math><mml:math overflow="scroll"><mml:mo>∼</mml:mo><mml:mn>63.76</mml:mn><mml:mi mathvariant="normal">%</mml:mi></mml:math><inline-graphic xlink:href="IET-COM.2018.5928.IM2.gif"/></alternatives></inline-formula> over the other existing techniques.
Year
DOI
Venue
2019
10.1049/iet-com.2018.5928
Iet Communications
Keywords
Field
DocType
probability,cognitive radio,radiofrequency interference,telecommunication network reliability,power control,optimisation,signal detection,radio spectrum management,telecommunication control
Data transmission,Efficient energy use,Power control,Systems design,Computer network,Bandwidth (signal processing),Interference (wave propagation),Throughput,Mathematics,Cognitive radio
Journal
Volume
Issue
ISSN
13
10
1751-8628
Citations 
PageRank 
References 
2
0.36
0
Authors
3
Name
Order
Citations
PageRank
Santi P. Maity140350.37
Avik Banerjee2195.65
Anal Paul330.70