An OFDM system with modified predistorter and MLS

H. Yoshimi, T. Ohtsuki

研究成果: Conference article

9 引用 (Scopus)

抜粋

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. 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).

元の言語English
ページ(範囲)1677-1681
ページ数5
ジャーナルIEEE Vehicular Technology Conference
3
発行部数54ND
出版物ステータスPublished - 2001 1 1
外部発表Yes
イベントIEEE 54th Vehicular Technology Conference (VTC FALL 2001) - Atlantic City, NJ, United States
継続期間: 2001 10 72001 10 11

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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