An OFDM system with modified predistorter and MLS

H. Yoshimi, Tomoaki Ohtsuki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)

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. 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).

Original languageEnglish
Title of host publicationIEEE Vehicular Technology Conference
Pages1677-1681
Number of pages5
Volume3
Edition54ND
Publication statusPublished - 2001
Externally publishedYes
EventIEEE 54th Vehicular Technology Conference (VTC FALL 2001) - Atlantic City, NJ, United States
Duration: 2001 Oct 72001 Oct 11

Other

OtherIEEE 54th Vehicular Technology Conference (VTC FALL 2001)
CountryUnited States
CityAtlantic City, NJ
Period01/10/701/10/11

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Yoshimi, H., & Ohtsuki, T. (2001). An OFDM system with modified predistorter and MLS. In IEEE Vehicular Technology Conference (54ND ed., Vol. 3, pp. 1677-1681)