IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
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An adaptive tone injection for OFDM PAPR reduction
Mochan YangYoan Shin
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JOURNAL FREE ACCESS

2011 Volume 8 Issue 15 Pages 1234-1239

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Abstract

We propose an ATI (Adaptive Tone Injection) scheme based on clipping noises for PAPR (Peak-to-Average Power Ratio) reduction of OFDM (Orthogonal Frequency Division Multiplexing) signals. The proposed scheme is composed of three steps: clipping, tone selection, and TI procedures. In the first step, the peak samples in the inverse fast Fourier transform outputs are scaled down by the clipping. In the second step, two tone positions where the powers of the real and imaginary parts of the clipping noises are the maximum, are selected. Finally, the generic TI procedure is performed for the selected tones. Simulation results show that the proposed scheme significantly reduces the complexity of the original TI, while maintaining the PAPR reduction performance.

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© 2011 by The Institute of Electronics, Information and Communication Engineers
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