Companding technique for PAPR reduction in OFDM systems based on an exponential function

  title={Companding technique for PAPR reduction in OFDM systems based on an exponential function},
  author={Tao Jiang and Yang Yang and Yong-Hua Song},
  journal={GLOBECOM '05. IEEE Global Telecommunications Conference, 2005.},
  pages={4 pp.-2801}
In this paper, a new non-linear companding technique, called "exponential companding", is proposed to reduce the high peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signals. Unlike the mu-law companding scheme, which enlarges only small signals so that increases the average power, the schemes based on exponential companding technique adjust both large and small signals and can keep the average power at the same level. By transforming the original OFDM… CONTINUE READING
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