NDLI: Performance and optimisation of agent compression and forwarding system for correlated sources

Content Provider	IET Digital Library
Author	Xu, Dazhuan Chen, Dan Zhang, Ruidan
Abstract	A system for the correlated Gaussian sources to perform compression forwarding via the multi-relay network in the additive white Gaussian noise channel is proposed in this study. The characteristic of the newly proposed system is that it is composed of two parts: an analogue sensor network from the sources to multiple relay nodes and a digital communication network from multiple relay nodes to the destination node. The sensors can only perform simple analogue signal transmission, but the encoder set up at each relay can carry out complex distributed source coding DSC and then send the coded digital signals to the destination node. In this study, the authors establish the rate–distortion function of DSC based on the Chief Executive Officer problem. Combined with the channel capacity theorem, an optimal power allocation scheme is first proposed. The quantisation signal-to-noise ratio (SNR) at the destination node is used to evaluate the performance of the system under different correlations between sources. For the case of independent sources, a closed-form expression for the quantisation SNR is derived and they compare the optimised agent compress-and-forward system with the traditional amplify-and-forward system to verify that the proposed system can achieve better SNR performance.
Starting Page	2523
Ending Page	2532
Page Count	10
ISSN	17518628
Volume Number	13
e-ISSN	17518636
Issue Number	Issue 16, Oct (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/13/16
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2018.5704
Journal	IET Communications
Publisher Date	2019-06-28
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Additive White Gaussian Noise Channel Agent Compress Agent Compression Amplify- System Analogue Sensor Network AWGN Channel Channel Capacity Channel Capacity Theorem Chief Executive Officer Problem Code Coded Digital Signal Complex Distributed Source Coding Compression Forwarding Correlated Gaussian Sources Correlated Sources Destination Node Different Correlations Digital Communication Digital Communication Network DSC Error Statistics Forward System Forwarding System Independent Source Multiple Relay Node Multirelay Network Optimal Power Allocation Scheme Optimisation Quantisation (signal) Quantisation Signal-to-noise Ratio Radio Link And Equipment Relay Network Simple Analogue Signal Transmission SNR Performance Source Coding Statistics Telecommunication Wireless Sensor Network
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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