Written test subjects: electronic circuits (including digital electricity and analog electricity). Interview content: oral English listening test; Professional foundation and professional knowledge such as communication principle and circuit, random signal analysis, etc.

This is clear from the annual enrollment brochure. Reference books are:

1. Signals and Systems, edited by Zeng Yucun and Zhang Baojun, published in beijing institute of technology press.

2. Digital signal processing (chapters 1 to 5), edited by Wang Shiyi.

If you need help, welcome to Shi Sheng Qingbei Education Consulting.