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Modified SLM Technique for PAPR Reduction in OFDM System


Verma ajay lallu , MMMUT; R.K.Prasad, MMMUT


OFDM(Orthogonal Frequency Division Multiplexing), PAPR(Peak to average power ratio), SLM(selective mapping), complementary cumulative distribution function (CCDF).


Orthogonal Frequency Division Multiplexing (OFDM) systems have gained popularity over the last few years for broadband wireless communication. OFDM is a method that allows transmitting high data rates over extremely hostile channel set a relatively low complexity. However, OFDM faces the Peak-to-Average Power Ratio(PAPR) problem that is a major drawback of multicarrier transmission system which leads to power inefficiency in RF section of the transmitter .PAPR (Peak to average power ratio) nothing but several sinusoidal leads. In this paper we propose SLM(selective mapping) schemes to reduce the peak-to-average power ratio. SLM is phase rotation scheme it applies scrambling rotation to all sub-carriers independently.

Other Details

Paper ID: IJSRDV2I3640
Published in: Volume : 2, Issue : 3
Publication Date: 01/06/2014
Page(s): 1163-1165

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