Loading...
New PAPR reduction in OFDM system using hybrid of PTS-APPR methods with coded side information technique
Author(s)
Pradabpet, Chusit
Yoshizawa, Shingo
Miyanaga, Yoshikazu
Dejhantt, Kobchai
Date Issued
January 1, 2008
Type
Article
Abstract
SUMMARY In this paper, we propose a new PAPR reduction by using the hybrid of a partial transmit sequences (PTS) and an adaptive peak power reduction (APPR) methods with coded side information (SI) technique. These methods are used in an Orthogonal Frequency Divi cion Multiplexing (OFDM) system. The OFDM employs orthogonal sub-carriers for data modulation. These sub-carriers unexpectedly present a large Peak to Average Power Ratio (PAPR) in some cases. In order to reduce PAPR, the sequence of input data is rearranged by PTS. The APPR method is also used to controls the peak level of modulation signals by an adaptive algorithm. A proposed reduction method consists of these two methods and realizes both advantages at the same time. In order to make the optimum condition on PTS for PAPR reduction, a quite large calculation cost must be demanded and thus it is impossible to obtain the optimum PTS. In the proposed method, by using the pseudo-optimum condition with a coded SI technique, the total calculation cost becomes drastically reduced. In simulation results, the proposed method shows the improvement on PAPR and also reveals the high performance on bit error rate (BER) of an OFDM system. Copyright © 2008 The Institute of Electronics.
Citation
IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences, E91-A(10), 2973-2979, 2008
Subjects