OFDM-MSK: A Method for Sidelobe Suppression in OFDM Systems
Orthogonal Frequency Division Multiplexing (OFDM) systems suffer from high side-lobes 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.