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  ____       ___     ______    _    _             
 |  _ \\    / _ \\  |      \\ | || | ||   ____    
 | |_| ||  | / \ || |  --  // | || | ||  |    \\  
 | .  //   | \_/ || |  --  \\ | \\_/ ||  | [] ||  
 |_|\_\\    \___//  |______//  \____//   |  __//  
 `-` --`    `---`   `------`    `---`    |_|`-`   
                                         `-`

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發送短信 : Symbol-error performance and bit-error performance of QAM signalling