Lecture 8

Lecture 8 - Baseband Pulse and Digital Signaling...

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Baseband Pulse and Digital Signaling
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Intersymbol Interference
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Raised Cosined 0 f f r = ( 29 - = 2 0 0 0 4 1 2 cos 2 2 sin 2 t f t f t f t f f h e π The zeros of e h occur at ) 2 /( 0 f n t = , 0 n , symbols can be inserted at the zero points without causing ISI. 0 0 2 ); 2 /( 1 f D f T S = = (r = 0) From 3.70 and 3.71, r B D + = 1 2
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Raised Cosined 0 f f r = ( 29 - = 2 0 0 0 4 1 2 cos 2 2 sin 2 t f t f t f t f f h e π The zeros of e h occur at ) 2 /( 0 f n t = , 0 n , symbols can be inserted at the zero points without causing ISI. 0 0 2 ); 2 /( 1 f D f T S = = (r = 0) From 3.70 and 3.71, r B D + = 1 2
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Differential Pulse Code Modulation In some signals as audio and video, adjacent samples have similar values and even the present value can be estimated from previous samples. = -
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Lecture 8 - Baseband Pulse and Digital Signaling...

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