Space-time block coded transmit/receive diversity using 4 receive antennas for multi-carrier transmissions
نویسندگان
چکیده
あらまし 高速信号伝送が要求される次世代の移動無線通信では周波数選択性フェージングチャネルの克服が必 要不可欠であり,マルチキャリア符号分割多重アクセス(MC-CDMA)が注目されている.伝送特性を改善する技術 としてアンテナダイバーシチが良く知られている.筆者らはこれまでに送信側にチャネル等化処理を集中できる時 空間符号化送受信ダイバーシチ(STBC-TRD)を提案した.STBC-TRD は,送信チャネル情報を用いて送信信号を符 号化し,受信側で簡単な復号操作を行うことによりダイバーシチ効果を得ることができる.しかし,これまでの提 案では受信アンテナ数が 2 本までに制限されていた.本論文では,4 アンテナ受信を可能とする送信符号化を提案 している.そして,このときの BER 特性を計算機シミュレーションによって明らかにしている.また,時空間符号 化送信ダイバーシチ(STTD)と受信アンテナダイバーシチを併用するときの BER 特性との比較を行っている.
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تاریخ انتشار 2005