Echo-cancellation for ultrasonic data transmission through a metal channel

Richard Primerano, Kevin Wanuga, Joseph Dorn, Moshe Kam, Kapil Dandekar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

16 Scopus citations

Abstract

The process control industry has shown great Interest in implementation of low cost, low power wireless sensor networks. Such networks are much easier to deploy and reconfigure compared to wired alternatives. In this paper, we describe the use or radio-frequency (RF) based sensor networks In sensing and control applications on naval vessels. In this environment, metal bulkheads (which divide the ship into watertight compartments) and other metallic obstacles can lead to unreliable network connectivity. We propose to address the challenge by augmenting the RF network with ultrasonic data repeaters. The repeaters are designed to pass data from one side of a watertight bulkhead to the other without requiring the bulkhead to be physically penetrated. Through experimentation, we observed that echoes of pulses transmitted through the ultrasonic channel (i.e. the bulkhead) lead to considerable Inter - symbol interference and hinder high data rate transmission. In this paper, we investigate the nature of this interference and propose a method of mitigating its effect. The method applies a pre-distortion filter to the data which leads to destructive interference that reduces the echo amplitude.

Original languageEnglish (US)
Title of host publicationForty-first Annual Conference on Information Sciences and Systems, CISS 2007 - Proceedings
Pages841-845
Number of pages5
DOIs
StatePublished - Dec 1 2007
Externally publishedYes
Event41st Annual Conference on Information Sciences and Systems, CISS 2007 - Baltimore, MD, United States
Duration: Mar 14 2007Mar 16 2007

Publication series

NameForty-first Annual Conference on Information Sciences and Systems, CISS 2007 - Proceedings

Other

Other41st Annual Conference on Information Sciences and Systems, CISS 2007
CountryUnited States
CityBaltimore, MD
Period3/14/073/16/07

All Science Journal Classification (ASJC) codes

  • Computer Science(all)

Keywords

  • Acoustic data transmission
  • Echo cancellation
  • Echo suppression
  • Inter-symbol interference
  • Pre-distortion

Fingerprint Dive into the research topics of 'Echo-cancellation for ultrasonic data transmission through a metal channel'. Together they form a unique fingerprint.

Cite this