Power Allocation for SC-FDE-Based CR Systems Under Explicit Primary User Protection

Wu P, Schober R, Bhargava VK (2016)

Publication Language: English

Publication Type: Journal article

Publication year: 2016

Journal

IEEE Communications Letters Institute of Electrical and Electronics Engineers (IEEE)

Book Volume: 20

Pages Range: 858 - 861

Journal Issue: 5

DOI: 10.1109/LCOMM.2016.2544830

Abstract

In this letter, we consider the power allocation for a single-carrier (SC)-based secondary user (SU) transmitter (Tx), which transmits concurrently with an SC or multicarrier (MC) primary user (PU) over the same frequency band. A rate maximization problem for the SU system is formulated subject to an SU-Tx power constraint and an explicit rate loss constraint for the PU system. Due to the nonconvexity of the resulting problem, we propose a successive convex approximation approach to solve the problem where in each iteration closed-form solutions are derived for the power allocation variables of the SU-Tx. We further prove that the proposed algorithm is guaranteed to converge to a local optimum of the original nonconvex problem. Simulation results are provided to show the efficacy of the proposed approach.

Authors with CRIS profile

Robert Schober Lehrstuhl für Digitale Übertragung Vijay Kishore Bhargava Lehrstuhl für Digitale Übertragung

Involved external institutions

Sun Yat-Sen University CN China (CN)

How to cite

APA:

Wu, P., Schober, R., & Bhargava, V.K. (2016). Power Allocation for SC-FDE-Based CR Systems Under Explicit Primary User Protection. IEEE Communications Letters, 20(5), 858 - 861. https://dx.doi.org/10.1109/LCOMM.2016.2544830

MLA:

Wu, Peiran, Robert Schober, and Vijay Kishore Bhargava. "Power Allocation for SC-FDE-Based CR Systems Under Explicit Primary User Protection." IEEE Communications Letters 20.5 (2016): 858 - 861.

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