Robust power allocation for orthogonal frequency division multiplexing-based overlay/underlay cognitive radio network under spectrum sensing errors and channel uncertainties

• Published in: IET communications Vol. 10; no. 15; pp. 2010 - 2017
• Main Authors: Zhu, Ling, Zhao, Xiaohui
• Format: Journal Article
• Language: English
• Published: The Institution of Engineering and Technology 13.10.2016
• Subjects: Allocations; channel state information errors; channel uncertainties; Channels; cognitive radio; Data transmission; Detection; Error detection; interference model; Lagrange dual decomposition; Multiplexing; Networks; OFDM modulation; orthogonal frequency division multiplexing‐based overlay/underlay cognitive radio network; power allocation; primary user; radio spectrum management; Regular Papers; secondary user; spectrum sensing errors; telecommunication power management; Uncertainty; spectrum sensing errors; radio spectrum management; channel state information errors; telecommunication power management; channel uncertainties; power allocation; secondary user; cognitive radio; primary user; orthogonal frequency division multiplexing-based overlay/underlay cognitive radio network; interference model; Lagrange dual decomposition; OFDM modulation

In this study, a robust power allocation scheme with orthogonal frequency division multiplexing-based cognitive radio network is proposed to maximise total data transmission rate subject to interference power constraint of primary user (PU) and transmit power budget constraint of secondary user wher...