Rate-Distortion and Outage Probability Analyses for Single Helper Assisted Lossy Communications

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 multitermi...

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Veröffentlicht in:IEEE transactions on vehicular technology Jg. 68; H. 11; S. 10882 - 10894
Hauptverfasser: Lin, Wensheng, Xue, Qiang, He, Jiguang, Juntti, Markku, Matsumoto, Tad
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York IEEE 01.11.2019
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Schlagworte:
Codes
Communications systems
Computer simulation
Distortion
Fading channels
Internet of Things
outage probability
Performance evaluation
Power system reliability
Probability
Propagation losses
Rate-distortion
Rayleigh fading
Remote sensors
Source coding
Wireless communications
Wireless sensor network
Wireless sensor networks
ISSN:0018-9545, 1939-9359
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Zusammenfassung: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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ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2019.2939622