University of Oulu

Qian, S., He, J., Zhou, X., Imai, T., & Matrumoto, T. (2022). Performance analysis of one‐source‐with‐one‐helper transmission over shadowed κ$\kappa$‐μ$\mu$ fading multiple access channels. IET Communications, 16(12), 1369–1381.

Performance analysis of one-source-with-one-helper transmission over shadowed κ-μ fading multiple access channels

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Author: Qian, Shen1; He, Jiguang2,3; Zhou, Xiaobo4;
Organizations: 1Department of Information Systems Creation, Faculty of Engineering, Kanagawa University, Yokohama, Japan
2Technology Innovation Institute, Abu Dhabi, United Arab Emirates
3Centre for Wireless Communications, University of Oulu, Oulu, Finland
4School of Computer Science and Technology, Tianjin University, Tianjin, China
5IMT Atlantique, Brest, France
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 2.1 MB)
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Language: English
Published: Institution of Electrical Engineers, 2022
Publish Date: 2023-02-22


The performance of correlated sources transmission over multiple access shadowed κ-μ fading channels is investigated, in which one of the correlated sources needs to be recovered at the destination, whereas the other serves as a helper. The sufficient condition for lossless coding is determined by the intersection of the modified Slepian–Wolf region and the multiple access channel region. The outage probability upper bounds are derived based on the sufficient condition, with the Gaussian codebook capacity and the constellation constrained capacity, respectively. The difference between the outage probabilities derived with the two kinds of capacities is found to be very minor, when the spectrum efficiency or source rate is low; however, with high spectrum efficiency or high source rate, such difference becomes significant. A closed-form outage approximation is also obtained at the high signal-to-noise ratio region. The accuracy of the analytical results is verified by the Monte-Carlo simulations. It is found that shadowing significantly affects the outage performance, however, it has no effect on the diversity gain. Furthermore, the power allocation between the source and the helper is studied to minimize the outage probability and it is found that generally more power should be allocated to the helper in the case with higher source-helper correlation.

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Series: IET Communications
ISSN: 1751-8628
ISSN-E: 1751-8636
ISSN-L: 1751-8628
Volume: 16
Issue: 12
Pages: 1369 - 1381
DOI: 10.1049/cmu2.12402
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This research was supported in part by Japan Society for the Promotion of Science, KAKENHI 21K17738, and also in part by the National Natural Science Foundation of China under Grant 62072330.
Copyright information: © 2022 The Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.