Chapter 7 Binary Receivers Colored Noise and Matched
Chapter 7 Binary Receivers Ø Ø Colored Noise and Matched Filter Reception Performance of Baseband Unipolar Signaling Performance of Baseband Polar Signaling Performance of Baseband Bipolar Systems Huseyin Bilgekul EEE 461 Communication Systems II Department of Electrical and Electronic Engineering Eastern Mediterranean University EEE 461 1
Homework Assignments • Return date: 20 -12 -2005 • Assignments: Problem 7 -1 Problem 7 -5 Problem 7 -7 Problem 7 -10 Problem 7 -14 EEE 461 2
Matched Filter Receiver for Colored Noise • Evaluate BER for colored noise. • Prewhitening Filter is inserted ahead of the receiver. • Transfer function of the prewhitening filter is. • The following receiver can now be designed for white noise. White Noise EEE 461 3
Receiver of Baseband Unipolar Signaling EEE 461 4
Performance of Baseband Unipolar Signaling EEE 461 5
Receiver of Baseband Polar Signaling EEE 461 6
Performance of Baseband Polar Signaling • Polar signaling has 3 d. B advantage over unipolar signaling. • For the same Pe, unipolar signaling requires 3 d. B more power. EEE 461 7
Performance of Baseband Polar Signaling EEE 461 8
Performance of Baseband Bipolar Signaling EEE 461 9
Performance of Baseband Bipolar Signaling • Binary 1’s are represented by alternating positive and negative values. • s 1(t) = ±A, 0 < t < T (Binary 1) s 2(t) = 0, 0 < t < T (Binary 0) 1 1 1 0 0 1 1 fr(r|-1) -VT fr|m fr(r|0) fr(r|1) VT EEE 461 10
Performance of Baseband Bipolar Signaling EEE 461 11
Performance of Baseband Bipolar Signaling • Blue-bipolar • Green- unipolar (on/off) • Red – bipolar AMI EEE 461 12
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