Response of an ultrasonic communication channel in air
Response of an ultrasonic communication channel in air
- Author(s): C. Li ; D.A. Hutchins ; R.J. Green
- DOI: 10.1049/iet-com.2010.0916
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- Author(s): C. Li 1 ; D.A. Hutchins 1 ; R.J. Green 1
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View affiliations
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Affiliations:
1: School of Engineering, University of Warwick, Coventry, UK
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Affiliations:
1: School of Engineering, University of Warwick, Coventry, UK
- Source:
Volume 6, Issue 3,
14 February 2012,
p.
335 – 343
DOI: 10.1049/iet-com.2010.0916 , Print ISSN 1751-8628, Online ISSN 1751-8636
The authors propose a model for estimating the response of an ultrasonic communication channel, where a specific type of capacitive transreceivers was used to give an effective bandwidth of over 1 MHz. Apart from the responses of transreceivers, the channel response at each location within the radiated field can be determined by attenuation response and special field response. The driving signal used to verify the model was a quadrature phase shift keying (QPSK) signal centred at 300 kHz, and with a signalling rate of 400 kbps. Simulations were firstly carried out to identify the variations in waveform as well as spectrum caused by predicted response at several coordinates. This is then compared with experimental results, and good agreements were found between the two.
Inspec keywords: telecommunication signalling; quadrature phase shift keying; channel estimation; radio transceivers
Other keywords:
Subjects: Radio links and equipment; Communication channel equalisation and identification; Modulation and coding methods
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