Improved Circuit Design of Analog Joint Source Channel Coding for Low-power and Low-complexity Wireless Sensors

To enable low-power and low-complexity wireless monitoring, an improved circuit design of Analog Joint Source Channel Coding (AJSCC) is proposed for wireless sensor nodes. This innovative design is based on Analog Divider Blocks (ADB) with tunable spacing between AJSCC levels. The ADB controls the s...

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Published in:arXiv.org 2019-06
Main Authors: Zhao, Xueyuan, Sadhu, Vidyasagar, Yang, Anthony, Pompili, Dario
Format: Article
Language:English
Subjects:
Analog circuits
Circuit design
Coding
Complexity
Design improvements
Electric potential
Power consumption
Spatial resolution
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Sadhu, Vidyasagar
Yang, Anthony
Pompili, Dario
description To enable low-power and low-complexity wireless monitoring, an improved circuit design of Analog Joint Source Channel Coding (AJSCC) is proposed for wireless sensor nodes. This innovative design is based on Analog Divider Blocks (ADB) with tunable spacing between AJSCC levels. The ADB controls the switching between two types of Voltage Controlled Voltage Sources (VCVS). LTSpice simulations were performed to evaluate the performance of the circuit, and the power consumption and circuit complexity of this new ADB-based design were compared with our previous parallel-VCVS design. It is found that this improved circuit design based on ADB outperforms the design based on parallel VCVS for a large number of AJSCC levels (>= 16), both in terms of power consumption as well as circuit complexity, thus enabling persistent and higher temporal/spatial resolution environmental sensing.
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subjects Analog circuits
Circuit design
Coding
Complexity
Design improvements
Electric potential
Power consumption
Spatial resolution
title Improved Circuit Design of Analog Joint Source Channel Coding for Low-power and Low-complexity Wireless Sensors
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