PAPR Reduction in OFDM Systems Using Orthogonal Eigenvector Matrix

OFDM systems are known to have a high PAPR (Peak-to-Average Power Ratio) compared with single-carrier systems. In fact, the high PAPR is one of the most detrimental aspects in the OFDM system, as it can cause power degradation (Inband distortion) and spectral spreading (Out-of-band radiation). In this paper, from the foundation of the PAPR analysis an effective method of PAPR reduction has been proposed based on Orthogonal Eigenvector Matrix (OEM) transform. Extensive computer simulations show that a PAPR reduction of up to 4.4 dB can be obtained without introducing in-band distortion or out-of-band radiation in the system.

• Md. Mahmudul Hasan

• Orthogonal frequency division multiplexing (OFDM)
• peak-to-average power ratio (PAPR)
• Orthogonal Eigenvector Matrix (OEM).

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