NDLI: A Low-Complexity Time-Domain Linear Symbol Combining Technique for PAPR Reduction in OFDM Systems

Content Provider	IEEE Xplore Digital Library
Author	Alsusa, E. Lin Yang
Copyright Year	1991
Abstract	High peak-to-average-power ratio (PAPR) is a particular disadvantage of orthogonal frequency-division multiplexing (OFDM) systems and can significantly degrade the power efficiency at the transmitter. The aim of this paper is to propose a post-inverse fast Fourier transform (IFFT) PAPR reduction method based on intelligent linear symbol combining with the objective to minimize the PAPR at the transmitter. Unlike the methods so far reported in the literature, the proposed method has a relatively low complexity and does not require external randomization sequences. This paper will also investigate the impact of the proposed method on the system's bit error rate (BER) performance and provide a closed-form analytical expression that takes into account the BER dependency on the side information bits and multiblock combination. It will be shown that the proposed technique can provide significant PAPR reductions at manageable levels of signal processing requirements while the BER degradation is relatively small.
Sponsorship	IEEE Signal Processing Society
Starting Page	4844
Ending Page	4855
Page Count	12
File Size	1118381
File Format	PDF
ISSN	1053587X
Volume Number	56
Issue Number	10
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Time domain analysis Peak to average power ratio OFDM Bit error rate Degradation Transmitters Frequency division multiplexing Fast Fourier transforms Information analysis Performance analysis time- domain processing Orthogonal frequency-division multiplexing (OFDM) peak-to-average-power ratio (PAPR) reduction
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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