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PAPR Reduction Methods for Noncoherent OFDM-MFSK

Overview MFSK (M-ary Frequency Shift Keying) can be combined with OFDM (Orthogonal Frequency Division Multiplexing) by grouping the subcarriers into groups of M and applying MFSK modulation to each groups. The detection of such an OFDM-MFSK modulation scheme can be noncoherent and it is very robust against Doppler shift and Doppler spread. The noncoherent detection of OFDMMFSK allows an arbitrary phase choice for all subcarriers in the transmitter. This degree of freedom can be exploited to reduce the PAPR (Peak-to-Average Power Ratio), which is a well known problem for multicarrier transmission schemes. This paper compares several PAPR reduction schemes and apply them to OFDM-MFSK.

Further White Paper Details
Publisher	University of Ulm	File Format	PDF
Date Published	April 2007	Downloads	3
Format	White Papers
Topics	Wireless LAN, Mobile - Wireless Communications

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