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Achieving Reduced PAPR By Residue Number System Model Using MIMO OFDM


Vijayalaxmi , Guru Nanak Dev Engineering College, Bidar; Dr. Mohammad Bakhar, Guru Nanak Dev Engineering College Bidar




Multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) technology is one of the most attractive candidates for fourth generation (4G) wireless communication. MIMO-OFDM effectively combats the multipath fading channel and improves the bandwidth efficiency. At the same time, it also increases system capacity so as to provide a reliable transmission. The main drawback of MIMO-OFDM is high peak-to-average power ratio (PAPR), which is the main limitation of OFDM-based systems due to multiple subcarriers. In our proposed method, residue number system (RNS) module to effectively limit the output in each residue subchannel after inverse fast Fourier transform, which is smaller than the corresponding modulus. The main contribution of the proposed scheme is to reduce the dynamic range of the transmitted signal without nonlinear distortion so as to reduce the PAPR during the transmission. Compared with the partial transmit sequence (PTS) scheme, the RNS-based PAPR reduction scheme has not only much better PAPR reduction performance without restriction to modulation format, but also low computational complexity without side information.

Other Details

Paper ID: NCACCP036
Published in: Conference 8 : NCACC-2016
Publication Date: 01/10/2016
Page(s): 152-156

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