Title :
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.
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;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2005. PIMRC 2005. IEEE 16th International Symposium on
Conference_Location :
Berlin
Print_ISBN :
9.7838007291e+012
DOI :
10.1109/PIMRC.2005.1651542
