NDLI: Optimal and sub-optimal resource allocation in multiple-input multiple-output-orthogonal frequency division multiplexing-based multi-relay cooperative cognitive radio networks

Content Provider	IET Digital Library
Author	Adian, Mehdi Ghamari Aghaeinia, Hassan
Abstract	The authors consider the resource allocation issue in multiple-input multiple-output-orthogonal frequency division multiplexing-based cooperative cognitive radio networks with the decode-and-forward (DF) as the cooperation strategy. The dual decomposition technique is recruited to obtain an optimal subcarrier pairing, relay selection and power allocation. The optimal resource allocation is performed subject to the individual power constraints in source and relays so that the sum-rate is maximised while the interference induced to the primary system is kept below a pre-specified interference temperature limit. Moreover, because of the high computational complexity of the optimal approach, a sub-optimal algorithm is further proposed. In the sub-optimal scheme, the joint allocation of the resources is performed taking into account the channel qualities, the DF cooperation strategy, the interference induced to the primary system and the individual power budgets. The performance of different approaches and the impact of the constraint values and deploying multiple-antennas at users are explored through numerical simulations.
Starting Page	646
Ending Page	657
Page Count	12
ISSN	17518628
Volume Number	8
e-ISSN	17518636
Issue Number	Issue 5, Mar (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/8/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2013.0676
Journal	IET Communications
Publisher Date	2014-02-04
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Channel Qualities Cognitive Radio Computational Complexity Constraint Values Cooperative Communication Decode And Forward Communication Decode-and-forward Strategy DF Cooperation Strategy Dual Decomposition Technique Electromagnetic Compatibility Interference Interference Temperature Limit MIMO Communication MIMO System Modulation And Coding Method Multiple-Antenna Multiple-input Multiple-output-orthogonal Frequency Division Multiplexing Multirelay Cooperative Cognitive Radio Network Numerical Analysis Numerical Method Numerical Simulation OFDM Modulation OFDM Technique Optimal Resource Allocation Optimal Subcarrier Pairing Power Budgets Power Constraint Primary System Radio Frequency Interference Radio Link And Equipment Relay Network Relay Selection Resource Allocation Suboptimal Resource Allocation Sum-rate Telecommunication
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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