發送短信 : Differential distributed Cayley space-time codes

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