DocumentCode :
1045721
Title :
A New PAPR Reduction Technique of OFDM System with Nonlinear High Power Amplifier
Author :
Park, Dong-Hyun ; Song, Hyoung-Kyu
Author_Institution :
Sejong Univ., Seoul
Volume :
53
Issue :
2
fYear :
2007
fDate :
5/1/2007 12:00:00 AM
Firstpage :
327
Lastpage :
332
Abstract :
High peak-to-average power ratio (PAPR) of the transmit signal is a major drawback of multicarrier transmission such as orthogonal frequency division multiplexing (OFDM). Most of recent works have focused on minimizing the PAPR of OFDM signal to enhance performance. However, after relating this issue with the specific characteristics of high power amplifier (HPA), we propose a new scheme based on iterative partial transmit sequence (I-PTS) scheme that uses the amount of OFDM signal´s nonlinear distortion to be caused by high power amplifier (HPA) as a new measure. The proposed scheme can have simple subblock combining method by applying iterative PTS and then, a new measure which is called adaptive nonlinear estimator (ANE), is achieved by estimating the mean square error (MSE) between the OFDM signals before and after the nonlinear HPA. The one with the minimum MSE among OFDM candidate signals is selected for transmission. From the results, it can be seen that a proposed scheme based-iterative PTS can be easily implemented with low combining complexity, still maintaining a better BER performance, compared to the conventional PTS approach.
Keywords :
OFDM modulation; adaptive estimation; iterative methods; mean square error methods; nonlinear estimation; power amplifiers; MSE; OFDM system; PAPR reduction technique; adaptive nonlinear estimator; iterative partial transmit sequence scheme; mean square error; multicarrier transmission; nonlinear distortion; nonlinear high power amplifier; orthogonal frequency division multiplexing; peak-to-average power ratio; Bit error rate; Distortion measurement; High power amplifiers; Iterative methods; Mean square error methods; Nonlinear distortion; OFDM; Partial transmit sequences; Peak to average power ratio; Power measurement;
fLanguage :
English
Journal_Title :
Consumer Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0098-3063
Type :
jour
DOI :
10.1109/TCE.2007.381696
Filename :
4266909
Link To Document :
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