Title :
A DFT-based ICI self-cancellation scheme for OFDM systems
Author :
Han, Bing ; Gao, Xiqi ; You, Xiaohu ; Costa, Elena
Author_Institution :
Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China
Abstract :
A new scheme to reduce the frequency-offset sensitivity of orthogonal frequency division multiplexing (OFDM) systems is proposed. Without any redundant modulation, and thus no loss of bandwidth efficiency induced, two parallel discrete Fourier transform (DFT) modules are inserted in the transmitter side to reduce the sensitivity to frequency offset. The fast implementation of DFT also facilitates the proposed scheme.
Keywords :
OFDM modulation; discrete Fourier transforms; interference suppression; mobile radio; radiofrequency interference; DFT; ICI self-cancellation scheme; OFDM systems; bandwidth efficiency; discrete Fourier transform; mobile radio; orthogonal frequency division multiplexing; redundant modulation; Additive noise; Bandwidth; Discrete Fourier transforms; Interference; Local oscillators; Mobile communication; OFDM modulation; Propagation losses; Transmitters; Wireless sensor networks;
Conference_Titel :
Communication Technology Proceedings, 2003. ICCT 2003. International Conference on
Print_ISBN :
7-5635-0686-1
DOI :
10.1109/ICCT.2003.1209780
