NDLI: New multiple-input multiple-output-based filter bank multicarrier structure for cognitive radio networks

Content Provider	IET Digital Library
Author	Hamid, Zahraa Abd El Hassan, Emad S. Zekry, Abdel Halim A. Elagooz, Salah S. Samir, Moataz Samie, Fathi E. Abd El
Abstract	Cognitive radio (CR) has been proposed for spectral efficiency improvement while avoiding interference with licensed users. The offset quadrature amplitude modulation-based filter bank multicarrier (OQAM-FBMC) modulation is a promising candidate for CR-based systems. Although it behaves better in many aspects than orthogonal frequency division multiplexing (OFDM), the application of some techniques with FBMC becomes more challenging due to the imaginary interference, as in the case of multiple-input multiple-output (MIMO) technique. Here, the authors first propose a new MIMO-based FBMC transceiver structure for CR systems. The proposed structure is based on QAM transmission to handle the interference presented in conventional OQAM-FBMC systems. The authors also introduce two different methods to satisfy the orthogonality conditions and cancel the residual interference in QAM-FBMC systems. Both methods are based on discrete cosine transform (DCT) to achieve superior spectrum confinement and hence better spectral efficiency. Moreover, the authors present a resource allocation algorithm for the proposed structure. Simulation results demonstrate that the proposed structure outperforms the conventional FBMC-based MIMO techniques in terms of bit error rate (BER) and computational complexity. The results also show that the spectral efficiency of the proposed structure could be further improved by applying the proposed resource allocation algorithm.
Starting Page	1514
Ending Page	1523
Page Count	10
ISSN	17518628
Volume Number	13
e-ISSN	17518636
Issue Number	Issue 10, Jun (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/13/10
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2018.5706
Journal	IET Communications
Publisher Date	2019-03-21
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Bit Error Rate Channel Bank Filter Cognitive Radio Cognitive Radio Network Computational Complexity Conventional FBMC-based MIMO Technique Conventional OQAM-FBMC System CR System CR-based System DCT Discrete Cosine Transform Electromagnetic Compatibility Error Statistics Even Subcarriers Filtering Method in Signal Processing Imaginary Interference Integral Transforms Inter-carrier Interference Intercarrier Interference Interference Interference Suppression MIMO Communication MIMO-based FBMC Transceiver Structure Modulation And Coding Method New Multiple-input Multiple-output-based Filter Bank Multicarrier Structure Odd Subcarriers OFDM Modulation Offset Quadrature Amplitude Modulation-based Filter Bank Multicarrier Modulation OQAM-FBMC Technique Orthogonal Frequency Division Multiplexing System Orthogonality Condition QAM Transmission Quadrature Amplitude Modulation Radio Frequency Interference Radio Link And Equipment Radio Network Radio Transceivers Residual Interference Cancellation Resource Allocation Resource Allocation Algorithm Spectral Efficiency Spectral Efficiency Improvement Spectrum Confinement Statistics Timing Offset
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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