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Unformatted text preview: 2 cos c t Amplifier KP s M (t ) s d (t ) Transmit Filter Ak Symbol Encoder Channel k ch = -20 dB n (t ) x (t ) 1 S1 2 dk Differential Encoder bk Optimal Symbol Detector BPF x r (t ) x d (t ) MF kTS Per bit 1 Per bit 2 Decision Device A (r ) k Symbol Decoder 2 cos( c t + 0 ) th = 0 1 S2 2 Differential Decoder . , , b k (1 TS = 20 sec : . p (bk ) = 0.5 for k = 1,2 1; 0 t < TS . g (t ) = : Transmit Filter (2 0 otherwise . Ak = 1 s M (t ) = 2 Ak g (t - kTS ) cos c t k (3 0 - n (t ) (4 N 0 = 3.78 10 - 6 V2 Hz 4 ((15%) d = Er Per bit1 N0 Ts 0 2 .("1" S1, S 2 ) . E r = s r (t )dt , 0 - Per bit 2 .("2" S1, S 2 ) . Per symbol = Per bit 1 Per bit 2 - Per bit1 ((5%) . 0 = 0 - K P = 50 Per bit 2 - Per bit1 ((10%) .' . 0 = - K P = 50 .Q-function : 2 ' (40%)...
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This note was uploaded on 05/01/2008 for the course COM ENG 909 taught by Professor Drj during the Spring '08 term at Ben-Gurion Uni..

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