Title :
Fractional Sampling OFDM/OQAM-IOTA on Multipath Channel with Long Delay Spread
Author :
Tamura, Tsubasa ; Sanada, Yukitoshi
Author_Institution :
Keio Univ., Yokohama
Abstract :
Orthogonal frequency division multiplex (OFDM) modulation systems can completely prevent intersymbol interference due to multipath propagation by providing a guard interval which is longer than the maximum delay spread. If the delay spread exceeds the guard interval, on the other hand, intersymbol interference (ISI) and intercarrier interference (ICI) occur. This paper evaluates the performance of a fractional sampling (FS) OFDM/Offset QAM-IOTA system in which FS achieves diversity. It is shown that FS OFDM/Offset QAM-IOTA system suffers less from ISI and ICI due to the delayed path even if the delay spread exceeds the guard interval.
Keywords :
OFDM modulation; intercarrier interference; intersymbol interference; multipath channels; quadrature amplitude modulation; signal sampling; OFDM/Offset QAM-IOTA system; fractional sampling; guard interval; intercarrier interference; intersymbol interference prevention; long delay spread; maximum delay spread; multipath channel; multipath propagation; orthogonal frequency division multiplex modulation; quadrature amplitude modulation; Fading; Filters; Frequency domain analysis; Intersymbol interference; MIMO; Mobile communication; Multipath channels; OFDM modulation; Propagation delay; Sampling methods;
Conference_Titel :
Communications, Computers and Signal Processing, 2007. PacRim 2007. IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
978-1-4244-1189-4
Electronic_ISBN :
1-4244-1190-4
DOI :
10.1109/PACRIM.2007.4313285
