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Effects of Spectral Shaping on OFDM Transmission Performance in Nonlinear Channels

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1 Author(s)
Shigeo Nakajima ; Department of Information and Electronics Engineering Niigata Institute of Technology, 1719, Fujihashi, Kashiwazaki-shi 945-1195 Japan. Email:

This paper proposes a spectral shaping method for OFDM signals that reduces nonlinear distortion. In this method, new subcarriers, which are produced from original subcarriers, are inserted into a conventional OFDM signal to smooth the spectral shape. The results of computer simulations in a nonlinear channel show that spectral-shaped OFDM signals have lower out-of-band spectrum properties and bit-error rate than conventional OFDM signals when an iterative clipping-and-filtering technique is used in the transmitter.

Published in:

2007 16th IST Mobile and Wireless Communications Summit

Date of Conference:

1-5 July 2007