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A Bandwidth-Efficient Soft-Decision Scheme for Distributed Binary Detection in Sensor Networks

Authors:
Victor Cheng
Tsang-Yi Wang
Hao Wang

Keywords: Distributed detection; bandwidth efficiency; fusion rule; wireless sensor networks.

Abstract:
The soft-decision fusion scheme on sensor detection in wireless sensor networks is able to improve the detection performance on the final decision made at the Fusion Center (FC). In this paper, a bandwidth-efficient transmission scheme using the soft-decision fusion scheme is proposed for distributed binary detection. In the scheme, the source coding is through the quantization process, but the output of the quantizer is analogously transmitted to the FC. In the FC, the Maximum-a-Posteriori (MAP) fusion rule is adopted to make the final decision. The problem of huge channel bandwidth demand can be avoided by using the considered data transmission scheme. The proposed scheme is illustrated with numerical examples highlighting its significant improvement in error performance at the FC as compared with the hard-decision scheme.

Pages: 52 to 54

Copyright: Copyright (c) IARIA, 2019

Publication date: October 27, 2019

Published in: conference

ISSN: 2308-4405

ISBN: 978-1-61208-744-3

Location: Nice, France

Dates: from October 27, 2019 to October 31, 2019