Narrowband interference suppression in underwater acoustic OFDM system

Author

Shen, Weijie ; Sun, Haixin ; Cheng, En ; Su, Wei ; Zhang, Yonghuai

Author_Institution

Key Lab. of Underwater Acoust. Commun. & Marine Inf. Technol., Xiamen Univ., Xiamen, China

Volume

1

fYear

2010

fDate

6-7 March 2010

Firstpage

496

Lastpage

499

Abstract

Orthogonal Frequency Division Multiplexing (OFDM) is well known as a very attractive technology for communication. However, because of the spectral leakage in discrete Fourier transform, the spectrum of narrowband interference is spreaded to impact adjacent sub-carriers in OFDM system. Receiver window function was previously implemented to suppress narrow-band interference. In this paper, different kinds of receiver window functions were compared in the underwater acoustic OFDM system. The results of simulation and experiment show that the raised cosine window can suppress NBI and reduce the BER.

Keywords

OFDM modulation; acoustic receivers; discrete Fourier transforms; interference suppression; underwater acoustic communication; discrete Fourier transform; interference suppression; orthogonal frequency division multiplexing; raised cosine window; receiver window function; spectral leakage; underwater acoustic OFDM system; Acoustic distortion; Fast Fourier transforms; Frequency domain analysis; Interference suppression; Narrowband; OFDM modulation; Robotics and automation; Sampling methods; Underwater acoustics; Underwater communication; OFDM; narrowband interference; nyquist window; raised cosine window; underwater acoustic;

fLanguage

English

Publisher

ieee

Conference_Titel

Informatics in Control, Automation and Robotics (CAR), 2010 2nd International Asia Conference on

Conference_Location

Wuhan

ISSN

1948-3414

Print_ISBN

978-1-4244-5192-0

Electronic_ISBN

1948-3414

Type

conf

DOI

10.1109/CAR.2010.5456788

Filename

5456788