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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