Energy-Efficient Fixed-Gain AF Relay Assisted OFDM with Index Modulation
Type
ArticleKAUST Department
Communication Theory LabComputer 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
2020-05-19Online Publication Date
2020-05-19Print Publication Date
2020-09Permanent link to this record
http://hdl.handle.net/10754/662889
Metadata
Show full item recordAbstract
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.2020.2995365arXiv
2006.04926Additional Links
https://ieeexplore.ieee.org/document/9096410/https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9096410
ae974a485f413a2113503eed53cd6c53
10.1109/LWC.2020.2995365