Ultrasonic wireless communication in air using OFDM-OOK modulation

Author

Wentao Jiang ; Wright, William M. D.

Author_Institution

Sch. of Eng. - Electr. & Electron. Eng., Univ. Coll. Cork, Cork, Ireland

fYear

2014

fDate

3-6 Sept. 2014

Firstpage

1025

Lastpage

1028

Abstract

A short-range multi-channel airborne ultrasonic data communication system using orthogonal frequency division multiplexing (OFDM) is described in this paper. An on-off keying (OOK) based OFDM modulation scheme was implemented successfully in the system by using a pair of commercially available air-coupled capacitive ultrasonic transducers. 56 orthogonal channels with a channel spacing of 1 kHz were transmitted in parallel, achieving a data transfer rate of 56 kbps with ultrasonic wireless synchronization. A simulation model developed in the work was able to predict ultrasonic signals accurately through the air channel. System performance was characterised by bit error rate (BER) testing over different transmission ranges. Error free decoding was achieved at distances up to 3 m.

Keywords

OFDM modulation; amplitude shift keying; ultrasonic applications; ultrasonic transducers; OFDM-OOK modulation; air coupled capacitive ultrasonic transducers; bit error rate testing; bit rate 56 kbit/s; on-off keying based OFDM modulation scheme; orthogonal frequency division multiplexing; short range multichannel airborne ultrasonic data communication system; simulation model; ultrasonic wireless communication; ultrasonic wireless synchronization; Acoustics; Atmospheric modeling; Bit error rate; Modulation; OFDM; Receivers; Transducers; air-coupled ultrasound; capacitive ultrasonic transducer; ultrasonic communication; wireless synchronization;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium (IUS), 2014 IEEE International

Conference_Location

Chicago, IL

Type

conf

DOI

10.1109/ULTSYM.2014.0251

Filename

6932222