A novel FFT/IFFT based peak-to-average power reduction method for OFDM communication systems using tone reservation

Samuel Oru Besong; Xiaoyou Yu; Bin Li; Weibing Hou; Xiaochun Wang

doi:10.1117/12.913037

1 October 2011 A novel FFT/IFFT based peak-to-average power reduction method for OFDM communication systems using tone reservation

Samuel Oru Besong, Xiaoyou Yu, Bin Li, Weibing Hou, Xiaochun Wang

Author Affiliations +

Proceedings Volume 8285, International Conference on Graphic and Image Processing (ICGIP 2011); 82853Y (2011) https://doi.org/10.1117/12.913037
Event: 2011 International Conference on Graphic and Image Processing, 2011, Cairo, Egypt

Abstract

One of the main drawbacks of OFDM systems is the high Peak-to-Average Power ratio, which could limit transmission efficiency and efficient use of HPA. In this paper we present a modified tone reservation scheme for PAPR reduction using FFT iterations to generate the tones. In this Scheme, the reserve tones are designed to both cancel peaks and slightly increase the average power to induce a better PAPR reduction..The tones are generated by means of 2 FFT operations and the process is sometimes iterated to achieve better PAPR reductions. This scheme achieves a significant PAPR reduction of at least 4.6dB when about 4% of the carriers are used as reserve tones and with even lesser iterations when simulated in an OFDM system.

Citation Download Citation

Samuel Oru Besong, Xiaoyou Yu, Bin Li, Weibing Hou, and Xiaochun Wang "A novel FFT/IFFT based peak-to-average power reduction method for OFDM communication systems using tone reservation", Proc. SPIE 8285, International Conference on Graphic and Image Processing (ICGIP 2011), 82853Y (1 October 2011); https://doi.org/10.1117/12.913037

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