HARQ Throughput of Single-carrier Transmission Using Joint Transmit/receive MMSE-FDE And Iterative ISI Cancellation
نویسندگان
چکیده
あらまし 筆者らは以前,広帯域シングルキャリア(SC)信号伝送を対象とし,チャネル情報を送受信で用いて最 小平均自乗誤差(MMSE)規範に基づく 1 タップの周波数領域等化(FDE)を協調的に行うジョイント送信/受信 MMSE-FDEを提案した.最近,協調等化後に残留する符号間干渉(ISI)をキャンセルする繰り返し ISIキャンセル技 術(ISIC)を導入(ジョイント送信/受信 MMSE-FDE&ISIC)し,大幅な伝送特性の改善が可能であることを明らかにし てきた.また,ハイブリッド ARQ(HARQ)を用いる SC 伝送にジョイント送信/受信 MMSE-FDE を導入し,パケッ トの再送・合成を考慮した送受信 FDEを行うことでスループット特性を大幅に改善できることも明らかにしてきた. しかし以前の SC-HARQの検討では,繰り返し ISICの導入は行っていなかった.本報告では,繰り返し ISICと HARQ パケット合成の両者を考慮したジョイント送信/受信 MMSE-FDEを提案する.計算機シミュレーションにより,提 案法を用いることでスループット特性を以前の SC-HARQ並びに送信 FDEを用いない方法と比べて大幅に改善でき ることを明らかにしている. キーワード シングルキャリア,周波数領域等化,ISIキャンセル,HARQ
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