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  ______    ______   _    _     ______   __   _   
 /_____//  /_   _// | |  | ||  /_   _// | || | || 
 `____ `    -| ||-  | |/\| ||   -| ||-  | '--' || 
 /___//     _| ||_  |  /\  ||   _| ||_  | .--. || 
 `__ `     /_____// |_// \_||  /_____// |_|| |_|| 
 /_//      `-----`  `-`   `-`  `-----`  `-`  `-`  
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發送短信 : Amplify-and-forward based two-way relay ARQ system with relay combination