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IEICE Transactions on Communications 2008 E91-B(3):784-794; doi:10.1093/ietcom/e91-b.3.784
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Copyright © 2008 The Institute of Electronics, Information and Communication Engineers

Regular Section -- Papers -- Wireless Communication Technologies

Proposal of Simple PAPR Reduction Method for OFDM Signal by Using Dummy Sub-Carriers

Pisit BOONSRIMUANG1, Kazuo MORI2, Tawil PAUNGMA1 and Hideo KOBAYASHI2

1 The authors are with the Department of Telecommunication Engineering, Faculty of Engineering, King Moungkut's Institute of Technology of Ladkrabang, Thailand. E-mail: kobayashi{at}mie-u.ac.jp, 2 The authors are with Graduate School of Engineering, Mie University, Tsu-shi, 514-8507 Japan.


  Abstract

One of the disadvantages of using OFDM is the larger peak to averaged power ratio (PAPR) in its time domain signal as compared with the conventional single carrier modulation method. The larger PAPR signal would course the fatal degradation of bit error rate (BER) performance due to the inter-modulation noise occurring in the non-linear amplifier. To overcome this problem, this paper proposes a simple PAPR reduction method by using dummy sub-carriers, which can achieve the better PAPR performance with less computational complexity than the conventional method. This paper presents various computer simulation results to verify the effectiveness of proposed method as comparing with the conventional method in the non-linear channel.

Key Words: OFDM, PAPR, DSI method, dummy sub-carriers, non-linear amplifier

Manuscript received October 30, 2006. Manuscript revised March 26, 2007.


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