Analysis of quantization metrics for PAPR evaluation in OFDM systems

Orthogonal Frequency Division Multiplexing (OFDM) has become the popular modulation technique in high speed wireless communications. It has several advantages over other techniques, such as high data rate, strong immunity to multipath and high spectral efficiency. However, it could have high peaks in the transmitted signal; this is the well-known Peak-to-Average Power Ratio (PAPR) problem. It is very important to deal with PAPR reduction in OFDM systems to avoid signal degradation. Currently, the PAPR problem is an active area of research and in this paper we discuss about the PAPR problem and the main metrics that are used to measure the PAPR in any OFDM system. Moreover their advantages and disadvantages have been enumerated in order to provide the readers the actual situation of the metric to cuantizate the PAPR problem.