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    Energy-Efficient Fixed-Gain AF Relay Assisted OFDM with Index Modulation

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    Type
    Article
    Authors
    Zhou, Jiusi cc
    Dang, Shuping
    Shihada, Basem cc
    Alouini, Mohamed-Slim cc
    KAUST Department
    Communication Theory Lab
    Computer Science Program
    Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia.
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering
    Electrical Engineering Program
    Networks Laboratory (NetLab)
    Date
    2020-05-19
    Online Publication Date
    2020-05-19
    Print Publication Date
    2020-09
    Permanent link to this record
    http://hdl.handle.net/10754/662889
    
    Metadata
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    Abstract
    To broaden the application scenario and reduce energy consumption, we propose an energy-efficient fixed-gain (FG) amplify-and-forward (AF) relay assisted orthogonal frequency-division multiplexing with index modulation (OFDM-IM) scheme in this letter. The proposed system needs neither instantaneous channel state information (CSI) nor complicated processing at the relay node. It operates based on the power allocation scheme that minimizes the sum of transmit power at both source and relay node, given an outage probability constraint. Through a series of problem transformation and simplification, we convert the original power allocation problem to its relaxed version and solve it using convex programming techniques. To reveal the computing efficiency of the proposed power allocation scheme, we analyze its computational complexity. Numerical simulations substantiate that the proposed optimization scheme has a neglectable loss compared with the brute force search, but the computational complexity can be considerably reduced.
    Citation
    Zhou, J., Dang, S., Shihada, B., & Alouini, M.-S. (2020). Energy-Efficient Fixed-Gain AF Relay Assisted OFDM With Index Modulation. IEEE Wireless Communications Letters, 9(9), 1509–1513. doi:10.1109/lwc.2020.2995365
    Publisher
    Institute of Electrical and Electronics Engineers (IEEE)
    Journal
    IEEE Wireless Communications Letters
    DOI
    10.1109/LWC.2020.2995365
    arXiv
    2006.04926
    Additional Links
    https://ieeexplore.ieee.org/document/9096410/
    https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9096410
    ae974a485f413a2113503eed53cd6c53
    10.1109/LWC.2020.2995365
    Scopus Count
    Collections
    Articles; Computer Science Program; Electrical and Computer Engineering Program; Communication Theory Lab; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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