NDLI: A subcarrier-phase control based peak power reduction method for coded space division multiplexed OFDM systems

Content Provider	IEEE Xplore Digital Library
Author	Muta, O.
Copyright Year	2008
Description	Author affiliation: Grad. Sch. of Inf. Sci. & Electr. Eng., Kyushu Univ., Fukuoka, Japan (Muta, O.)
Abstract	In this paper, we propose a sub-carrier phase control based peak power reduction (PPR) method for a turbo-coded space division multiplexed orthogonal frequency division multiplexing (SDM-OFDM) system. The PPR method is an extended version of the existing partial-transmit sequence (PTS), where the same numbered cluster signals at different antenna elements are weighted by the same weighting factors (WFs) and PAPR of OFDM signal is reduced by adjusting the phase of each cluster signal by multiplying WFs so as to minimize PAPR of OFDM signals. On the receiver side, WF estimation and error correction are jointly performed with turbo decoding, where WFs are estimated by exploiting the decoding results of two data streams passing through different channel in SDM-OFDM systems. When the PPR method using 9 clusters is applied to 64-QAM OFDM signal, instantaneous power of the transmit signal at the CCDF of $10^{-4}$ can be reduced by about 1.9 dB. In addition, when a peak limiter is applied to 64QAM-OFDM system using the PPR method, instantaneous power at the CCDF of $10^{-4}$ is reduced by about 3.1 dB as compared to case without any peak power reduction, while the proposed method achieves almost the same block error rate (BLER) performance in attenuated 12-path Rayleigh fading condition.
Starting Page	1065
Ending Page	1070
File Size	435357
Page Count	6
File Format	PDF
ISBN	9781424424238
DOI	10.1109/ICCS.2008.4737346
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-11-19
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Control systems OFDM Peak to average power ratio Decoding Phase control Turbo codes Estimation error Error correction Error analysis Rayleigh channels Space division multiplexing Peak-to-average power ratio (PAPR) PAPR reduction Turbo-code
Content Type	Text
Resource Type	Article

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