Receiver based PAPR reduction in OFDMA

Anum Z. Ali, Ali Y. Al-Zahrani, Tareq Y. Al-Naffouri, Ayman F. Naguib

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

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. © 2014 IEEE.
Original languageEnglish (US)
Title of host publication2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages8087-8091
Number of pages5
ISBN (Print)9781479928927
DOIs
StatePublished - May 2014

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