Adaptive peak-to-average power ratio reduction algorithm for DTMB-A systems

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Abstract

This paper describes an adaptive peak-to-average power ratio (PAPR) reduction algorithm using the active constellation extension (ACE) for DTMB-A systems with large FFT lengths. The implementation of ACE algorithm for APSK constellation is introduced with the feasible extension region for the APSK constellation. An optimal time-domain factor for the ACE algorithm is then given based on the peak-cancellation signal. Since the original active constellation extension is sensitive to the initial clipping threshold, a method is given to adaptively adjust the clipping threshold. Simulations show that the algorithm has better performance than the original algorithms and is more robust to the initial clipping threshold.

Keywords digital terrestrial multimedia broadcast advanced (DTMB-A) peak-to-average power ratio (PAPR) active constellation extension (ACE) orthogonal frequency division multiplexing (OFDM)

Issue Date: 15 April 2014

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	Linfeng LIANG
	Jun WANG
	Jian SONG

Cite this article:

Linfeng LIANG,Jun WANG,Jian SONG. Adaptive peak-to-average power ratio reduction algorithm for DTMB-A systems[J]. Journal of Tsinghua University(Science and Technology), 2014, 54(4): 449-452.

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http://jst.tsinghuajournals.com/EN/ OR http://jst.tsinghuajournals.com/EN/Y2014/V54/I4/449

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