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  ______     ___                ______   _    _   
 /_____//   / _ \\      ___    /_   _// | \  / || 
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 /___//    | \_/ ||   | [] ||   _| ||_  | .  . || 
 `__ `      \___//     \__ ||  /_____// |_|\/|_|| 
 /_//       `---`       -|_||  `-----`  `-`  `-`  
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Text this: Study of MIMO broadcast channels with finite rate feedback for wireless communications