%0 Journal Article %T The Problem of Peak-to-Average Power Ratio in OFDM Systems %A Martha Cecilia Paredes Paredes %A Julia Fern¨˘ndez-Getino %J Redifis %D 2012 %I Escuela Polit¨¦cnica Nacional %X Orthogonal Frequency Division Multiplexing (OFDM) is widely used in many digital communication systems due to its advantages such us high bit rate, strong immunity to multipath and high spectral efficiency but it suffers a high Peak-to-Average Power Ratio (PAPR) at the transmitted signal. 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 present several techniques and that mathematically analyzed. Moreover their advantages and disadvantages have been enumerated in order to provide the readers the actual situation of the PAPR problem. %K OFDM system %K PAPR reduction %U http://redifis.epn.edu.ec/index.php/ReDiFIS/article/view/20