BibTeX:

@article{IJIRSTV2I5007,
     title={Performance Improvement in MIMO-OFDM System by Papr Reduction},
     author={Mrs. Najneen Jamadar and Dr. Shailaja Patil},
     journal={International Journal for Innovative Research in Science & Technology},
     volume={2},
     number={5},
     pages={14--22},
     year={},
     url={http://www.ijirst.org/articles/IJIRSTV2I5007.pdf},
     publisher={IJIRST (International Journal for Innovative Research in Science & Technology)},
}

This paper proposes an advanced MIMO-OFDM reconfigurable architecture along with companding transform. The reconfigurable architecture uses switching algorithm between MIMO diversity and special multiplexing which allows selecting the MIMO configuration and improves the BER. The major drawback of orthogonal frequency division multiplexing (OFDM) system is peak to average power ratio (PAPR). Many techniques were developed to reduce PAPR. Considering all available PAPR reduction techniques, companding transform is attractive technique for its simplicity. This paper put forward the comparison of two techniques namely exponential companding and nonlinear companding. In this paper evaluation of performance is shown in terms of bit error rate and peak to average power ratio.

MIMO-OFDM, PAPR reduction, switching algorithm, exponential companding, nonlinear companding