文章基本信息

标题：最適合成を用いたデータ拡散OFDM方式
本地全文：下载
作者：北島輔 ; 尾脇義明 ; 京面公士等
期刊名称：映像情報メディア学会誌
印刷版ISSN：1342-6907
电子版ISSN：1881-6908
出版年度：2002
卷号：56
期号：12
页码：1968-1975
DOI：10.3169/itej.56.1968
出版社：The Institute of Image Information and Television Engineers
摘要：In an OFDM transmission system, it is difficult to improve performance against frequency selective fading by using only an adaptive equalization because of the severe degradation of the SN ratio of specific carriers. In order to improve this, we propose an optimal data reconstruction from OFDM signal whose data symbols are spread in the frequency domain. In addition, we studied simplification of data spread OFDM with optimal data reconstruction. The bit error rate characteristics were examined by using computer simulations. Our results confirmed that the proposed method simplified data spread OFDM and equaled the performance of the conventional method. Moreover, we confirmed that combining it with large interleaver, rather than increasing carriers, improves the characteristics of the data spread OFDM under the Rayleigh frequency selective fading channel.
关键词：OFDM;データ拡散;インタリーバ;周波数/時間ダイバーシチ