Throughput performance of space-time block coded-joint transmit/receive antenna diversity
نویسندگان
چکیده
あらまし−次世代移動無線通信では超高速パケットアクセスが主流になることが予想され,誤り訂正符号と自動 再送要求を組み合わせたハイブリット自動再送要求(HARQ)技術の採用が不可欠である.マルチキャリア符号分割マ ルチアクセス(MC-CDMA)と HARQ の併用により厳しい周波数選択性フェージング環境下においても優れたスルー プット特性が得られることが知られている.さらなる伝送特性の改善にはアンテナダイバーシチ技術が有効である. 最近,筆者らは,受信アンテナ数は 6 本までであるが,任意の本数の送信アンテナを用いることのできる時空間符 号化送受信ダイバーシチ(STBC-JTRD)を提案した.本論文では STBC-JTRD を用いる MC-CDMA HARQ について述 べ,そのスループット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.そして,送信アンテナ数を増加 させた時,従来の時空間ブロック符号化送信ダイバーシチ(STTD)よりも優れたスループット特性が得られることを 明らかにしている. キーワード−周波数選択性フェージングチャネル,STBC-JTRD,STTD,HARQ,MC-CDMA
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