A Robust Detection Scheme of Orthogonal Space-Time Block Codes over Very Fast Fading Channels

This letter proposes a robust detection scheme of orthogonal space-time block codes that face very fast fading channels. The proposed detection scheme employs a QR decomposition on the channel matrix and minimizes noise enhancement and impact of channel estimation errors which occur in a conventional detection scheme. It is shown by simulations that the proposed detection scheme outperforms the conventional detection scheme when the channel fading is very fast. key words: orthogonal space-time block codes, space-time coding, QRdecomposition, very fast fading channels