Simulink Tutorial on Digital Modulation Methods - Cengage Learning

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610 CHAPTER 13. SIMULINK TUTORIAL ON DIGITAL MODULATION Figure 13.65: Transmitter trajectory for QPSK Figure 13.67: Transmitter scatter plot for QPSK SOLUTION Figure 13.66: Receiver trajectory for QPSK Figure 13.68: Receiver scatter plot for QPSK Eye pattern: Maximum eye opening at sampling time. All lines cross in two points at the sampling time. Trajectory: The lines cross in the QPSK constellation points if no noise is present. Scatter plot: QPSK constellation points. © 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.
13.6. QUADRATURE PHASE-SHIFT KEYING (QPSK) 611 Figure 13.69: Cos carrier parameter window 13.6.2 Phase and Frequency Offset Figure 13.70: Sin carrier parameter window We now encounter demodulation with phase and frequency mismatch for QPSK with square-root raised-cosine pulses. Reduce the noise variance to the smallest value and open the Receiver model. Phase Offset Double-click on the <strong>Simulink</strong> block of the cos carrier at the receiver. The parameter window is displayed. Introduce a phase offset of ϕ = π/8 in both quadrature components, as shown in Figures 13.69 and 13.70 (u denotes the frequency). Restart the simulation. The signal-space diagrams and eye patterns at the receiver are depicted in Figures 13.71 to 13.74. Figure 13.71: Receiver trajectory for QPSK with phase offset Figure 13.72: Receiver scatter plot for QPSK with phase offset © 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.
Page 1 and 2: Chapter 13 Simulink</strong
Page 3 and 4: 13.2. SHORT INTRODUCTION TO SIMULIN
Page 9 and 10: 13.4. PULSE SHAPING 581 Figure 13.1
Page 11 and 12: 13.4. PULSE SHAPING 583 13.4.1 Theo
Page 13 and 14: 13.4. PULSE SHAPING 585 Summation o
Page 15 and 16: 13.4. PULSE SHAPING 587 For α = 0.
Page 21 and 22: 13.5. BINARY PHASE-SHIFT KEYING (BP
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Page 43 and 44: 13.7. OFFSET-QPSK 615 Figure 13.83:
Page 45 and 46: 13.7. OFFSET-QPSK 617 3. How do the
Page 47 and 48: 13.7. OFFSET-QPSK 619 Figure 13.98:
Page 49 and 50: 13.8. MINIMUM SHIFT KEYING (MSK) 62
Page 51 and 52: 13.8. MINIMUM SHIFT KEYING (MSK) 62
Page 53 and 54: 13.9. 16-ARY QUADRATURE AMPLITUDE-S
Page 61: PROBLEMS 633 filter are limited in

Simulink Tutorial on Digital Modulation Methods - Cengage Learning

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