Modern Fiber Optic Communication Systems Simulations with Advanced Level Matlab Modules
NRZ-QPSK Nyquist Transmitter
(1) Use the Existing Modules / Components for Your Research Papers, Research Projects, Theses and Lab Simulation Experiments.
(2) Modify the Modules / Components to the Next Level for Your Research Papers, Research Projects and Theses.
(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.
QPSK transmitter that uses raised-cosine pulses in frequency domain is simulated. It is assumed that MZM nonlinearity is compensated by transmitter DSP so that the real part of (imaginary part of) complex optical field envelope is directly proportional to the in-phase (quadrature) component of the driving voltage.
This Module calls the following Sub Modules and Components:
Calculates the average optical power in dBm units
Modulates the output of the laser with raised-cosine pulse in frequency domain
Plots the eye diagram of the optical power.
Explore Further this Module:
4d.1 Change the roll-off factor from 0.3 to 1 and observe the spectral width change.
4d.2 Change the noise variances of optical and electrical components and observe the constellation diagram.
4d.3 Modify the code to realize 16-QAM.