An OFDM spread spectrum system using lapped transforms and partial band interference suppression

Author

Saulnier, Gary J. ; Whyte, V. A Alanzo ; Medley, Michael J.

Author_Institution

Dept. of Electr. Comput. & Syst. Eng., Rensselaer Polytech. Inst., Troy, NY, USA

fYear

1996

Firstpage

121

Lastpage

124

Abstract

A system that uses orthogonal frequency division multiplexing (OFDM) as a spread spectrum modulation is introduced and its performance is evaluated in the presence of tone interference. Interference excision, in which some of the transform bins are removed in the detection process, is used in the receiver. The BER performance obtained using a number of block transforms is compared to that obtained using the modulated lapped transform (MLT) and it is shown that the MLT provides much better performance due to its ability to confine the interference energy to a few transform bins

Keywords

error statistics; frequency division multiplexing; interference suppression; modulation; radiofrequency interference; spread spectrum communication; transforms; BER performance; OFDM spread spectrum system; block transforms; detection process; interference energy; interference excision; modulated lapped transform; orthogonal frequency division multiplexing; partial band interference suppression; receiver; spread spectrum modulation; system performance evaluation; tone interference; transform bins; Bit error rate; Discrete Fourier transforms; Discrete cosine transforms; Discrete transforms; Frequency conversion; Interference suppression; Laboratories; OFDM modulation; Spread spectrum communication; Systems engineering and theory;

fLanguage

English

Publisher

ieee

Conference_Titel

Digital Signal Processing Workshop Proceedings, 1996., IEEE

Conference_Location

Loen

Print_ISBN

0-7803-3629-1

Type

conf

DOI

10.1109/DSPWS.1996.555475

Filename

555475