Title :
Sinusoidal transforms in OFDM systems
Author :
Mandyam, Giridhar D.
Author_Institution :
Nokia Res. Center, Irving, TX, USA
fDate :
6/1/2004 12:00:00 AM
Abstract :
A method for using sinusoidal transforms as an alternative to the discrete Fourier transform (DFT) for orthogonal frequency division multiplexing (OFDM) wireless transmission methods is presented. These transforms satisfy the cyclic convolution properties of the DFT when used with a symmetric extension. Analysis of interference in OFDM systems reveals that under certain channel conditions or modulation constellations, throughput is enhanced when using sinusoidal transforms rather than the DFT.
Keywords :
OFDM modulation; adjacent channel interference; convolution; intersymbol interference; radio broadcasting; television broadcasting; transforms; DFT; OFDM systems; channel conditions; cyclic convolution properties; discrete Fourier transform; intercarrier interference; interference analysis; intersymbol interference; modulation constellations; orthogonal frequency division multiplexing wireless transmission methods; sinusoidal transforms; symmetric extension; throughput; Amplitude modulation; Binary phase shift keying; Delay; Discrete Fourier transforms; Discrete transforms; Fourier transforms; Intersymbol interference; OFDM modulation; Pulse modulation; Throughput; Intercarrier interference; OFDM; intersymbol interference; sinusoidal transforms;
Journal_Title :
Broadcasting, IEEE Transactions on
DOI :
10.1109/TBC.2004.828375
