OCSim Modules

Modern Fiber Optic Communication Systems Simulations with Advanced Level Matlab Modules

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Module 4c

Modulation Schemes

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NRZ-QPSK Transmitter

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Company Researchers & Developers

Integrate the Modules with your in-house and Commercial Software & Hardware Products

(1) Use the Existing Modules / Components for Your Research & Development.
(2) Modify the Modules / Components to the Next Level for Your Research & Development.
(3) Integrate Different Modules / Components in the OCSim Package to Realize Your Own Fiber Optic Communication Systems.
(4) Modify the Modules for Co-Simulations with the Third Party Commercial Optical Communication Systems Softwares.

Main Module

Optical_tx_qpsk.m

NRZ-QPSK transmitter that uses two dual drive Mach-Zehnder modulators (MZM) is simulated. The MZMs are driven by two polar NRZ signals corresponding to in-phase and quadrature data. The pulse shape is assumed to be raised-cosine.

This Module calls the following Sub Modules and Components:

(1) power_meter.m
Calculates the average optical power in dBm units

(2) tx_nrz_qpsk.m
Modulates the output of the laser with QPSK data using two dual drive Mach-Zehnder modulators

(3) eye_diagram.m
Plots the eye diagram of the optical power.

Explore Further this Module:

4c.1 Repeat 4b.1, 4b.2 by changing BPSK to QPSK.
4c.2 Modify the source code to realize 16-QAM.

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Selected Simulated Results Using this Module 

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Time Diagram – In phase Component

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Eye Diagram – In phase Component

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Time Diagram – Quadrature Component

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Eye Diagram – Quadrature Component

Constellation Diagram

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Spectrum

OCSim Modules details can be seen by clicking the pages below:

OCSim Modules Overview | OCSim Modules (1-18) in the Package

Module (1a) | Module (1b) | Module (1c) | Module (2a) | Module (2b) | Module (2c) | Module (3a) | Module (3b) | Module (4a) | Module (4b) | Module (4c) | Module (4d) | Module (5) | Module (6a) | Module (6b) | Module (7) | Module (8a) | Module (8b) | Module (8c) | Module (9a) | Module (9b) | Module (10) | Module (11a) | Module (11b) | Module (12) | Module (13) | Module (14) | Module (15) | Module (16) | Module (17) | Module (18)

OCSim Modules Brochure | OCSim Modules Selected Publication References | OCSim Modules Application Examples |

OCSim Modules Selected Simulated Results | OCSim Modules Videos       

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