Performance Comparison of Overlap FDE and Inter-block Interference Cancellation for Single-carrier Transmission
نویسندگان
چکیده
あらまし シングルキャリア(SC)伝送に最小平均二乗誤差規範に基づく周波数領域等化(MMSE-FDE)を用いれば, 周波数選択性フェージング環境下で優れた伝送特性が得られる.FDE では,ブロック間干渉(IBI)を避けて受信信号 を送信信号とチャネルインパルス応答の巡回畳み込みとするために,チャネルの最大遅延時間以上のサイクリック プレフィックス(CP)をガードインターバル(GI)に挿入になければならないので,伝送効率の低下を招いてしまう. CP 挿入を行わずに IBI を低減する技術として Overlap FDE と IBI キャンセラがある.本論文では,CP 挿入を行わな い SC 伝送における Overlap FDE と IBI キャンセラのビット誤り率(BER)の特性比較を計算機シミュレーションによ り行っている. キーワード Overlap FDE,IBI キャンセラ,シングルキャリア伝送
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تاریخ انتشار 2011