Estimation and compensation of clipping noise in OFDMA systems

Ying Chen; Jian Zhang; A. D.S. Jayalath

doi:10.1109/TWC.2010.02.090128

Estimation and compensation of clipping noise in OFDMA systems

Ying Chen^*, Jian Zhang, A. D.S. Jayalath

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

We propose an efficient and low-complexity scheme for estimating and compensating clipping noise in OFDMA systems. Conventional clipping noise estimation schemes, which need all demodulated data symbols, may become infeasible in OFDMA systems where a specific user may only know his own modulation scheme. The proposed scheme first uses equalized output to identify a limited number of candidate clips, and then exploits the information on known subcarriers to reconstruct clipped signal. Simulation results show that the proposed scheme can significantly improve the system performance.

Original language	English
Article number	5403529
Pages (from-to)	523-527
Number of pages	5
Journal	IEEE Transactions on Wireless Communications
Volume	9
Issue number	2
DOIs	https://doi.org/10.1109/TWC.2010.02.090128
Publication status	Published - Feb 2010

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10.1109/TWC.2010.02.090128

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AB - We propose an efficient and low-complexity scheme for estimating and compensating clipping noise in OFDMA systems. Conventional clipping noise estimation schemes, which need all demodulated data symbols, may become infeasible in OFDMA systems where a specific user may only know his own modulation scheme. The proposed scheme first uses equalized output to identify a limited number of candidate clips, and then exploits the information on known subcarriers to reconstruct clipped signal. Simulation results show that the proposed scheme can significantly improve the system performance.

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Estimation and compensation of clipping noise in OFDMA systems

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