University of Oulu

W. Lin, Q. Xue, J. He, M. Juntti and T. Matsumoto, "Rate-Distortion and Outage Probability Analyses for Single Helper Assisted Lossy Communications," in IEEE Transactions on Vehicular Technology, vol. 68, no. 11, pp. 10882-10894, Nov. 2019. doi: 10.1109/TVT.2019.2939622

Rate-distortion and outage probability analyses for single helper assisted lossy communications

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Author: Lin, Wensheng1; Xue, Qiang2; He, Jiguang2;
Organizations: 1School of Information Science, Japan Advanced Institute of Science and Technology, Ishikawa 923-1292, Japan
2Centre for Wireless Communications, University of Oulu, Oulu FI-90014, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 1.7 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2019
Publish Date: 2019-12-11


The primary objective of this paper is to investigate the performance improvement provided by a helper, with the aim of applications to a lossy communication system in wireless sensor networks (WSNs) and/or Internet of Things (IoT). Initially, we formulate the system model as a problem of multiterminal source coding with a helper, and determine an inner bound on the achievable rate-distortion region for binary sources. Based on Shannon’s lossy source-channel separation theorem, we further derive the outage probability of the system over block Rayleigh fading channels. The numerical results indicate that a helper can obviously expand the achievable rate-distortion region and provide diversity gains which in turn decrease the outage probability. Finally, we evaluate the practical performance of outage probability through simulations with exclusive-or (XOR) as an example of the helper structure. Both the simulation and theoretical results show second order diversity by introducing a helper, and lower outage probability by increasing the acceptable distortions.

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Series: IEEE transactions on vehicular technology
ISSN: 0018-9545
ISSN-E: 1939-9359
ISSN-L: 0018-9545
Volume: 68
Issue: 11
Pages: 10882 - 10894
DOI: 10.1109/TVT.2019.2939622
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work is funded in part by China Scholarship Council (CSC) and in part by JAIST Core-to-Core Program. This work has been also performed in part under JSPS Kakenhi (B)15H04007, and in part by Academy of Finland 6Genesis Flagship (grant 318927).
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
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