The Transmission Performance of Multi-code DS-CDMA with Frequency-Domain Equalization using Space-Time Cyclic Delay Transmit Diversity
نویسندگان
چکیده
時に送信する循環遅延送信ダイバーシチ(CDTD)では,等価的にパス数を増加することができるため,大きな周波数ダイバ ーシチ効果が得られる.また,時空間符号化を行い送信する時空間送信ダイバーシチ(STTD)は,アンテナダイバーシチ効 果を得ることができるため,平均ビット誤り率(BER)を改善できる.本論文では,STTD と CDTD を組み合わせた時空間循環 遅延送信ダイバーシチ(STCDTD)を提案し,周波数領域等化を用いる直交マルチコード DS-CDMA に適用したときの平均 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 CDTD および STTD の平均 BER 特性と比較をしている. キーワード マルチコード DS-CDMA,周波数領域等化,循環遅延送信ダイバーシチ(CDTD), 時空間送信ダイバー シチ(STTD),時空間循環遅延送信ダイバーシチ(STCDTD)
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تاریخ انتشار 2006