NDLI: An OFDM system with modified predistorter and MLS

Content Provider	IEEE Xplore Digital Library
Author	Yoshimi, H. Ohtsuki, T.
Copyright Year	2001
Description	Author affiliation: Dept. of Electr. Eng., Sci. Univ. of Tokyo, Chiba, Japan (Yoshimi, H.)
Abstract	To improve the bit error rate (BER) with a low outband emission, we propose an OFDM system with modified predistorter and maximum likelihood sequences (MLS). In the proposed system, input data are mapped to signal point series over multiple subcarriers. Then, the peak power is reduced with the partial transmit sequence (PTS) technique. After limited to the saturation amplitude of the high-power-amplifier (HPA), the signal is applied to the predistorter. Compared with the system using the conventional predistorter, the compression quantity of signal in the proposed system is small, because the peak power is reduced with the PTS technique beforehand. In addition, the minimum Euclidean distance in the proposed system is larger than that of the conventional system. Thus, the proposed system can improve the BER with the low outband emission. We show that only the proposed system can achieve the good performance in terms of both the BER and power spectrum density (PSD).
Starting Page	1677
Ending Page	1681
File Size	429708
Page Count	5
File Format	PDF
ISBN	0780370058
ISSN	10903038
DOI	10.1109/VTC.2001.956485
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-10-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	OFDM Multilevel systems Bit error rate Partial transmit sequences Peak to average power ratio Nonlinear distortion Euclidean distance Mobile communication Intersymbol interference Degradation
Content Type	Text
Resource Type	Article

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