International Journal of Innovative Research and Development

Abstract

One of the effective methods used for reducing Peak to Average Power Ratio (PAPR) in MIMO - OFDM systems is Adaptive Active Constellation Extension Algorithm. The proposed scheme is employed with Quadrature Amplitude Modulation (QAM). One of the big advantages is that the side information does not need to be sent to the receiver. The Adaptive ACE method is the most attractive scheme due to its good system performance and simplicity, also effectively reduces Peak-to-Average Power Ratio (PAPR) for different modulation formats and subcarrier sizes without any complexity increase and bandwidth expansion.

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