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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Bibliographic Details
Published in:IEEE sensors journal Vol. 18; no. 1; pp. 281 - 289
Main Authors: Xueyuan Zhao, Sadhu, Vidyasagar, Yang, Anthony, Pompili, Dario
Format: Journal Article
Language:English
Published: New York IEEE 01.01.2018
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Analog circuits
analog compression
Channel coding
circuit complexity
Circuit design
Circuit synthesis
Coding
Complexity
Complexity theory
Design improvements
Electric potential
Environmental monitoring
Power consumption
Power demand
Power efficiency
Sensors
signal multiplexing
Spatial resolution
Wireless communication
Wireless sensor networks
ISSN:1530-437X, 1558-1748
Online Access:Get full text
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Summary: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 have been performed to evaluate the performance of the circuit, and the power consumption and circuit complexity of this new ADB-based design have been 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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ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2017.2761765