The first round is a video interview with five basic questions, including your self-introduction, school background, and why you are applying for this position.

The next round is a phone technical interview lasting about an hour. They will randomly ask you questions in math, MATLAB, C/C++/Java programming, and your specific area. If you answer more than five questions incorrectly, they will stop asking and inform you to wait for the next step.

1. Math:

   • Matrix calculation
   • Linear algebra

2. MATLAB questions:

   • If you use MATLAB, the questions are basic and easy.

3. Programming language:

   • I chose C here. I was asked about pointers, memory allocation, and basic concepts.

4. Signal processing:

   • FFT
   • Nyquist theorem
   • DFT
   • Power spectral

5. Maybe your on-campus projects or thesis.