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

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Text this: BIT ERROR PROBABILITIES OF BDPSK, PI/2-BDPSK, QDPSK, AND PI/4-DQPSK OVER THE FREQUENCY NONSELECTIVE RICIAN FADING CHANNEL