發送短信

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

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發送短信 : A simple channel simulator for multiuser MIMO broadcast channel systems