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 __   _      ___     _    _    _    _     _____   
| || | ||   / _ \\  | \  / || | || | ||  / ____|| 
| '--' ||  / //\ \\ |  \/  || | || | || / //---`' 
| .--. || |  ___  ||| .  . || | \\_/ || \ \\___   
|_|| |_|| |_||  |_|||_|\/|_||  \____//   \_____|| 
`-`  `-`  `-`   `-` `-`  `-`    `---`     `----`

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Text this: Amplify-and-forward relay selection with outdated channel state information