NDLI: A Low-Complexity PTS-Based Radix FFT Method for PAPR Reduction in OFDM Systems

Content Provider	IEEE Xplore Digital Library
Author	Ghassemi, A. Gulliver, T.A.
Copyright Year	1991
Abstract	A low-complexity partial transmit sequence (PTS) technique for reducing the peak-to-average power ratio (PAPR) of an orthogonal frequency division multiplexing (OFDM) signal is presented. Signals at the middle stages of an -point radix FFT using decimation in frequency (DIF) or decimation in time (DIT) are considered for PTS subblocking. We show that DIF has a lower multiplicative complexity than DIT for similar PAPR reduction. A higher radix based FFT achieves better PAPR reduction per stage with less multiplicative complexity compared with a lower radix FFT. We further reduce the computational complexity by proposing a new technique, called decomposition PTS (D-PTS) subblocking, where subblocks are assigned through different stages of the transform. This new technique reduces the multiplicative complexity, while providing PAPR reduction similar to other techniques such as original PTS (O-PTS). Moreover, it has lower additive complexity.
Sponsorship	IEEE Signal Processing Society
Starting Page	1161
Ending Page	1166
Page Count	6
File Size	397132
File Format	PDF
ISSN	1053587X
Volume Number	56
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Peak to average power ratio OFDM Partial transmit sequences Computational complexity Fast Fourier transforms Wireless communication Signal processing algorithms Frequency division multiplexing Bit error rate Communication standards radix fast Fourier transform (FFT) Decimation in frequency (DIF) orthogonal frequency-division multiplexing peak-to-average power ratio (PAPR)
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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