IJESS

THE NEW ADAPTIVE ACTIVE CONSTELLATION EXTENSION ALGORITHM FOR PAR MINIMIZATION IN OFDM SYSTEMS

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Abstract

In this paper, the Peak-to-Average Ratio reduction in OFDM systems is implemented by the Adaptive Active Constellation Extension (ACE) technique which is more simple and attractive for practical downlink implementation purpose. However, in normal constellation method we cannot achieve the minimum PAR if the target clipping level is much below than the initial optimum value. To get the better of this problem, we proposed Active Constellation Algorithm with adaptive clipping control mechanism to get minimum PAR. Simulation results exhibits that the proposed algorithm reaches the minimum PAR for most severely low clipping signals to get minimum PAR.

Recommended Citation

PAVAN KUMAR, K. B. and RAO, R. S. (2014) "THE NEW ADAPTIVE ACTIVE CONSTELLATION EXTENSION

ALGORITHM FOR PAR MINIMIZATION IN OFDM SYSTEMS,"