Simulink Tutorial on Digital Modulation Methods - Cengage Learning
Simulink Tutorial on Digital Modulation Methods - Cengage Learning Simulink Tutorial on Digital Modulation Methods - Cengage Learning
592 CHAPTER 13. SIMULINK TUTORIAL ON DIGITAL MODULATION Figure 13.20: Menu Convolution Figure 13.21: Convolution of two NRZ rectangular pulses © 2013 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.
13.5. BINARY PHASE-SHIFT KEYING (BPSK) 593 Figure 13.22: Convolution of two raised-cosine pulses (α = 0.5) 2. It can be observed that the zero ISI condition is not exactly met for square-root raised-cosine pulses a with matched filter and small rolloff factor α. Try to explain! SOLUTION 1. NRZ Rectangular ∗ NRZ Rectangular Root-RC ∗ Root-RC for all α Raised-Cosine ∗ Raised-Cosine for α = 0. 2. Square-root raised-cosine pulses have to be implemented with a finite-duration impulse response. For small α the impulse response decreases slowly in the time domain and, therefore, the error due to truncation of the pulse in the time domain becomes noticeable. 13.5 Binary Phase-Shift Keying (BPSK) Binary phase-shift keying (BPSK) serves as a way to get familiar with the
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- Page 9 and 10: 13.4. PULSE SHAPING 581 Figure 13.1
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- Page 43 and 44: 13.7. OFFSET-QPSK 615 Figure 13.83:
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592 CHAPTER 13. SIMULINK TUTORIAL ON DIGITAL MODULATION<br />
Figure 13.20: Menu C<strong>on</strong>voluti<strong>on</strong><br />
Figure 13.21: C<strong>on</strong>voluti<strong>on</strong> of two NRZ rectangular pulses<br />
© 2013 <strong>Cengage</strong> <strong>Learning</strong>. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.
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