Title :
OFDM-MSK: A method for sidelobe suppression in OFDM systems
Author :
Mahmoodi, S. ; Omidi, M.J. ; Saeedi-Sourck, H.
Author_Institution :
ECE Dept., Isfahan Univ. of Technol., Isfahan, Iran
Abstract :
Orthogonal frequency division multiplexing (OFDM) systems suffer from high sidelobes level. In some applications, as cognitive radios, this phenomenon can be a serious matter. This paper proposes Minimum shift keying (MSK)-OFDM to address this problem. The proposed method is an OFDM system using MSK modulation in each subcarrier. The corresponding transmitter and receiver are introduced. The method doesn´t entail great changes in the main parts of OFDM. Like OFDM systems, the transceiver can be implemented using DFT/IDFT. Simulation results show great reduction in out of band radiation in comparison with conventional OFDM.
Keywords :
OFDM modulation; cognitive radio; minimum shift keying; radio transceivers; DFT-IDFT; OFDM-MSK modulation; cognitive radios; minimum shift keying-OFDM system; orthogonal frequency division multiplexing systems; out-of-band radiation reduction; receiver; sidelobe suppression; transceiver; transmitter; OFDM;
Conference_Titel :
Electrical Engineering (ICEE), 2012 20th Iranian Conference on
Conference_Location :
Tehran
Print_ISBN :
978-1-4673-1149-6
DOI :
10.1109/IranianCEE.2012.6292591
