A Study on Channel Capacity of Distributed Antenna Network Using Transmit/Receive Diversity in a Multi-cell Environment
نویسندگان
چکیده
あらまし アンテナを空間的に分散させて配置する分散アンテナネットワーク(DAN)は,伝搬損失の影響による 伝送品質の劣化を救済可能な無線ネットワークであり,複数の分散アンテナを用いてダイバーシチを行うことでシ ャドウイング損失および周波数選択性フェージングの影響を低減できるので,さらに伝送品質を改善できる.また, 時空間符号化送受信ダイバーシチ(STBC-JTRD)は符号化率を低下させずに任意の本数の送信アンテナを使用でき, 周波数領域送信等化と併用することで空間ダイバーシチ利得と周波数ダイバーシチ利得の両方を得ることができる. 本論文では,周波数領域(FD-)STBC-JTRD を用いる下りリンクシングルキャリア(SC-)DAN のマルチセル環境下にお けるチャネル容量について検討している.チャネル容量を最大化する送信重みを理論的に導出し,最適送信重みを 用いたときのチャネル容量をモンテカルロ数値計算により明らかにしている. キーワード 分散アンテナネットワーク,アンテナダイバーシチ,チャネル容量
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