發送短信

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  ____     \ \\/ // | || | ||  \ \\/ //  /_   _// 
 |    \\    \ ` //  | || | ||   \ ` //   `-| |,-  
 | [] ||     | ||   | \\_/ ||    | ||      | ||   
 |  __//     |_||    \____//     |_||      |_||   
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發送短信 : An auction approach for resource allocation in cognitive radio networks