---
_id: '11898'
abstract:
- lang: eng
  text: Abstract In this paper we present an approach for synchronizing a wireless
    acoustic sensor network using a two-stage procedure. First the clock frequency
    and phase differences between pairs of nodes are estimated employing a two-way
    message exchange protocol. The estimates are further improved in a Kalman filter
    with a dedicated observation error model. In the second stage network-wide synchronization
    is achieved by means of a gossiping algorithm which estimates the average clock
    frequency and phase of the sensor nodes. These averages are viewed as frequency
    and phase of a virtual master clock, to which the clocks of the sensor nodes have
    to be adjusted. The amount of adjustment is computed in a specific control loop.
    While these steps are done in software, the actual sampling rate correction is
    carried out in hardware by using an adjustable frequency synthesizer. Experimental
    results obtained from hardware devices and software simulations of large scale
    networks are presented.
author:
- first_name: Joerg
  full_name: Schmalenstroeer, Joerg
  id: '460'
  last_name: Schmalenstroeer
- first_name: Patrick
  full_name: Jebramcik, Patrick
  last_name: Jebramcik
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
citation:
  ama: Schmalenstroeer J, Jebramcik P, Haeb-Umbach R. A combined hardware-software
    approach for acoustic sensor network synchronization . <i>Signal Processing</i>.
    2014;(0). doi:<a href="http://dx.doi.org/10.1016/j.sigpro.2014.06.030">http://dx.doi.org/10.1016/j.sigpro.2014.06.030</a>
  apa: Schmalenstroeer, J., Jebramcik, P., &#38; Haeb-Umbach, R. (2014). A combined
    hardware-software approach for acoustic sensor network synchronization . <i>Signal
    Processing</i>, <i>0</i>. <a href="http://dx.doi.org/10.1016/j.sigpro.2014.06.030">http://dx.doi.org/10.1016/j.sigpro.2014.06.030</a>
  bibtex: '@article{Schmalenstroeer_Jebramcik_Haeb-Umbach_2014, title={A combined
    hardware-software approach for acoustic sensor network synchronization }, DOI={<a
    href="http://dx.doi.org/10.1016/j.sigpro.2014.06.030">http://dx.doi.org/10.1016/j.sigpro.2014.06.030</a>},
    number={0}, journal={Signal Processing}, author={Schmalenstroeer, Joerg and Jebramcik,
    Patrick and Haeb-Umbach, Reinhold}, year={2014} }'
  chicago: Schmalenstroeer, Joerg, Patrick Jebramcik, and Reinhold Haeb-Umbach. “A
    Combined Hardware-Software Approach for Acoustic Sensor Network Synchronization
    .” <i>Signal Processing</i>, no. 0 (2014). <a href="http://dx.doi.org/10.1016/j.sigpro.2014.06.030">http://dx.doi.org/10.1016/j.sigpro.2014.06.030</a>.
  ieee: 'J. Schmalenstroeer, P. Jebramcik, and R. Haeb-Umbach, “A combined hardware-software
    approach for acoustic sensor network synchronization ,” <i>Signal Processing</i>,
    no. 0, p., 2014, doi: <a href="http://dx.doi.org/10.1016/j.sigpro.2014.06.030">http://dx.doi.org/10.1016/j.sigpro.2014.06.030</a>.'
  mla: Schmalenstroeer, Joerg, et al. “A Combined Hardware-Software Approach for Acoustic
    Sensor Network Synchronization .” <i>Signal Processing</i>, no. 0, 2014, p., doi:<a
    href="http://dx.doi.org/10.1016/j.sigpro.2014.06.030">http://dx.doi.org/10.1016/j.sigpro.2014.06.030</a>.
  short: J. Schmalenstroeer, P. Jebramcik, R. Haeb-Umbach, Signal Processing (2014).
date_created: 2019-07-12T05:30:23Z
date_updated: 2023-10-26T08:11:22Z
department:
- _id: '54'
doi: http://dx.doi.org/10.1016/j.sigpro.2014.06.030
issue: '0'
keyword:
- Gossip algorithm
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://www.sciencedirect.com/science/article/pii/S0165168414002990
oa: '1'
page: ' - '
publication: Signal Processing
publication_identifier:
  issn:
  - 0165-1684
quality_controlled: '1'
status: public
title: 'A combined hardware-software approach for acoustic sensor network synchronization '
type: journal_article
user_id: '460'
year: '2014'
...