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CAPTCHA:

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

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Text this: Orthogonal space-time block code with pulse shaped offset QAM for multiple transmit antennas