Data Spread OFDM Using Transmission Diversity and Sub-carrier Control

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  • Kanamori Satoshi
    Department of Applied Electronics, Tokyo University of Science
  • Fujii Masahiro
    Department of Applied Electronics, Tokyo University of Science
  • Itami Makoto
    Department of Applied Electronics, Tokyo University of Science
  • Itoh Kohji
    Department of Applied Electronics, Tokyo University of Science

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  • 送信ダイバー・シティとサブキャリヤ制御を用いたデータ拡散ＯＦＤＭに関する一検討
  • ソウシン ダイバーシティ ト サブキャリヤ セイギョ オ モチイタ データ カクサン OFDM ニ カンスル イチ ケントウ

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Abstract

It is difficult to improve the performance of OFDM transmission by equalizing the channel characteristic under severe frequency selective fading conditions. Transmission diversity and data symbol spreading in the frequency domain are effective schemes for improving BER characteristics, and more improvement can be achieved by combining them. Moreover, further improvement should be achieved by controlling the sub-carrier power and phase of the signal transmitted by each antenna, especially under severe frequency selective fading conditions. In this paper, data spread OFDM using transmission diversity and a sub-carrier control scheme is proposed. Computer simulation of the proposed scheme demonstrated that it performs is well.

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