NDLI: Receiver based PAPR reduction in OFDMA

Content Provider	IEEE Xplore Digital Library
Author	Ali, A. Al-Zahrani, A. Al-Naffouri, T.Y. Naguib, A.
Copyright Year	2014
Description	Author affiliation: Dept. of Electr. Eng., King Abdullah Univ. of Sci. & Technol. (KAUST), Thuwal, Saudi Arabia (Al-Zahrani, A.) \|\| Dept. of Electr. Eng., King Fahd Univ. of Pet. & Miner. (KFUPM), Dhahran, Saudi Arabia (Ali, A.; Al-Naffouri, T.Y.) \|\| Qualcomm Res. Silicon Valley, Santa Clara, CA, USA (Naguib, A.)
Abstract	High peak-to-average power ratio is one of the major drawbacks of orthogonal frequency division multiplexing (OFDM). Clipping is the simplest peak reduction scheme, however, it requires clipping mitigation at the receiver. Recently compressed sensing has been used for clipping mitigation (by exploiting the sparse nature of clipping signal). However, clipping estimation in multi-user scenario (i.e., OFDMA) is not straightforward as clipping distortions overlap in frequency domain and one cannot distinguish between distortions from different users. In this work, a collaborative clipping removal strategy is proposed based on joint estimation of the clipping distortions from all users. Further, an effective data aided channel estimation strategy for clipped OFDM is also outlined. Simulation results are presented to justify the effectiveness of the proposed schemes.
Sponsorship	IEEE Signal Process. Soc.
Starting Page	8087
Ending Page	8091
File Size	135490
Page Count	5
File Format	PDF
ISBN	9781479928934
DOI	10.1109/ICASSP.2014.6855176
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-05-04
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Vectors Peak to average power ratio Estimation Reliability Channel estimation Time-domain analysis OFDMA PAPR reduction clipping channel estimation compressed sensing
Content Type	Text
Resource Type	Article

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