BER Performance of DS-CDMA with Frequency-domain Space-Time Block Coded-Joint Transmit/Receive Diversity
نویسندگان
چکیده
あらまし 周波数選択性フェージング環境下での DS-CDMA などのシングルキャリア伝送特性を改善する技 術として,周波数領域送信等化が注目されている.最近,筆者らは,周波数非選択性チャネルを対象として受信 アンテナ数は 4 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,周波数選択性チャネルを対象とし,STBC-JTRD と周波数領域送信等化を 組み合わせた周波数領域 STBC-JTRD(FD-STBC-JTRD)を提案している.また,チャネル利得が与えられたときの 条件付ビット誤り率(BER)特性を導出し,数値計算により平均 BER を求め,計算機シミュレーション結果と比 較することによりその妥当性を示している. キーワード 周波数選択性フェージング,周波数領域送信等化,時空間符号化,アンテナダイバーシチ, DS-CDMA
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تاریخ انتشار 2006