Distributed Space-Time Block Coded Transmission with Imperfect Channel Estimation: Achievable Rate and Power Allocation
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چکیده
منابع مشابه
Distributed Space-Time Block Coded Transmission with Imperfect Channel Estimation: Achievable Rate and Power Allocation
This paper investigates the effects of channel estimation error at the receiver on the achievable rate of distributed space-time block coded transmission. We consider that multiple transmitters cooperate to send the signal to the receiver and derive lower and upper bounds on the mutual information of distributed space-time block codes (D-STBCs) when the channel gains and channel estimation erro...
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In this article, we investigate the information-theoretical performance of a cooperative orthogonal frequency division multiplexing (OFDM) system with imperfect channel estimation. Assuming the deployment of training-aided channel estimators, we derive a lower bound on the achievable rate for the cooperative OFDM system with amplify-andforward relaying over frequency-selective Rayleigh fading c...
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あらまし これまでに我々は,周波数領域時空間符号化(FD-STBC)を用いるシングルキャリア(SC)時分割複 信(TDD)伝送のためのマルチブロック周波数領域等化(MB-FDE)を提案し,チャネル推定が理想的なとき高速 フェージング環境下で優れた伝送特性を有することを明らかにした.しかしながら,チャネル推定誤差が存在する 場合には MB-FDE の特性改善効果が低下してしまうという問題点があった.そこで本稿では,最小平均二乗誤差 (MMSE)規範に基づいて複数の 2 次元フィルタを同時に最適化することで,MIMO チャネルの推定と時間変動予 測と同時に実現する適応 2 次元 MIMO チャネル推定を提案する.データ判定後の軟判定データブロックをパイロッ トとして用いる繰り返し処理を組み合わせることによってさらに高い時間追従性を実現できる.繰り返し適応 2 次 元チャネル推定を MB-...
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The combination of multiple-antenna and orthogonal frequency division multiplexing (OFDM) provides reliable communications over frequency selective fading channels. We investigate this approach and focus on the application of space-time block codes (STBC) and space-frequency block codes (SFBC) in OFDM systems. We compare the performance of maximum likelihood (ML), zero forcing (ZF) and conventi...
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ژورنال
عنوان ژورنال: EURASIP Journal on Advances in Signal Processing
سال: 2007
ISSN: 1687-6180
DOI: 10.1155/2008/471327