University of Oulu

S. Song, J. He and T. Matsumoto, "Rate-Distortion and Outage Probability Analyses of Wyner-Ziv Systems Over Multiple Access Channels," in IEEE Transactions on Communications, vol. 69, no. 9, pp. 5807-5816, Sept. 2021, doi: 10.1109/TCOMM.2021.3087128

Rate-distortion and outage probability analyses of Wyner-Ziv systems over multiple access channels

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Author: Song, Shulin1; He, Jiguang2; Matsumoto, Tad3,4,5
Organizations: 1Graduate School of Information Science and Technology, Hokkaido University, 5 Chome Kita 8 Jonishi, Kita-ku, Sapporo, Hokkaido, 060-0808, Japan
2Centre for Wireless Communications, FI-90014, University of Oulu, Finland
3IMT Atlantique Bretagne Pays de la Loire, 4 Rue Alfred Kastler, 44300 Nantes, France
4Japan Advanced Institute of Science and Technology (JAIST)
5University of Oulu
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 1.6 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2021
Publish Date: 2021-06-14


In this paper, we conduct rate-distortion and outage probability analyses for Wyner-Ziv (WZ) systems, where the information sequences from a source and a helper are transmitted to the destination over block Rayleigh fading multiple access channels (MACs). This work has been motivated by decision-making systems, where the aim is to make right decisions based on the observations. Hence, the most critical performance metric is the accuracy of decisions, even allowing distortion in wireless transmission. A sufficient condition for the successful transmissions is that the WZ and MAC regions intersect. For the ease of calculating the outage probability, we propose an approximated, yet accurate, WZ rate region. The outage probabilities of the WZ systems are then evaluated both in orthogonal and MAC transmissions. It is shown that the transmission efficiency of the system with MAC is significantly improved compared to orthogonal transmission. Furthermore, a helper-selection scheme is introduced to further reduce the outage probability of the WZ-MAC systems. The results show that the outage probability decreases, of which decay corresponds to the (L+1)-order diversity with L helpers in small value range of the average signal-to-noise ratio (SNR), while it converges into L as the average SNR becomes large.

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Series: IEEE transactions on communications
ISSN: 0090-6778
ISSN-E: 1558-0857
ISSN-L: 0090-6778
Volume: 69
Issue: 9
Pages: 5807 - 5816
DOI: 10.1109/TCOMM.2021.3087128
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
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