Estimation and compensation of clipping noise in OFDMA systems
Date
2010
Authors
Chen, Ying
Zhang, Jian (Andrew)
Jayalath, A D S
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Volume Title
Publisher
Institute of Electrical and Electronics Engineers (IEEE Inc)
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.
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Keywords
Keywords: Clipped signals; Clipping noise; Data symbols; Estimation and compensation; Low-complexity; Modulation schemes; OFDMA systems; Simulation result; Sub-carriers; Estimation; Frequency division multiple access Clipping; OFDMA; PAPR
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Source
IEEE Transactions on Wireless Communications
Type
Journal article
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2037-12-31
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