An improved DCT-based OFDM data transmission scheme

Author

Tan, Peng ; Beaulieu, Norman C.

Author_Institution

Dept. of Electr. & Comput. Eng., Alberta Univ., Edmonton, Alta.

Volume

2

fYear

2005

fDate

11-14 Sept. 2005

Firstpage

745

Abstract

A discrete cosine transform (DCT)-based orthogonal frequency-division multiplexing (OFDM) system is described. The performance of the DCT-OFDM system with a zero-padding guard interval scheme and a minimum mean-square error (MMSE) receiver over time-varying multipath Rayleigh fading channels is investigated. The results show that employing the proposed DCT-OFDM system rather than the conventional DFT-OFDM system can provide better bit error rate performance in practical systems, by as much as 5.5 dB in signal-to-noise ratio

Keywords

OFDM modulation; Rayleigh channels; discrete cosine transforms; error statistics; least mean squares methods; multipath channels; receivers; time-varying channels; BER; DCT-OFDM system; MMSE receiver; bit error rate; data transmission; discrete cosine transform; minimum mean-square error; multipath Rayleigh fading channels; orthogonal frequency-division multiplexing; time-varying channels; zero-padding; Bit error rate; Chirp modulation; Data communication; Discrete Fourier transforms; Discrete cosine transforms; Fading; Intersymbol interference; OFDM; Time varying systems; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2005. PIMRC 2005. IEEE 16th International Symposium on

Conference_Location

Berlin

Print_ISBN

9.7838007291e+012

Type

conf

DOI

10.1109/PIMRC.2005.1651542

Filename

1651542