Is it possible to get admission in public universities in Germany with a field change or HDC (Higher Degree Change) for a Master's?

Yes, it is possible to get admission to public universities in Germany with a field change or Higher Degree Change (HDC), but it depends on the university, program, and your academic background.

- Field change at the master's level is generally more flexible, but you may need relevant foundational courses or work experience. Some universities might require additional preparatory courses.
- HDC within the same field is usually straightforward if you meet program requirements. Switching to an unrelated field is more challenging and may need extra qualifications.

Your background in Electronics and Communication Engineering makes a related master's transition more feasible. For a major field switch, extra steps may be needed.