There are three main directions for communication postgraduate entrance examination, namely, communication and information system, signal and information processing and electronics and communication engineering. Of the three majors, electronics and communication engineering is a professional master, and the other two are academic, so the major in electronics and communication engineering is relatively poor, and the two academic majors are communication and information systems. At present, the talents lacking in China are also communication and information system talents! There are many directions. Let me give you a small list:

1. Communication and information system

0 1 underwater acoustic communication technology

02 wireless communication

Broadband communication network and network security

optical communication technique

Design of special chip for 05 communication system

2. Signal and information processing

0 1 real-time information processing

Intelligent signal processing and imaging technology

03 digital image processing

Underwater acoustic signal processing

05 communication signal processing

3. electronics and communication engineering (Professional Degree)

1 underwater communication technology

2 wireless communication

3 Modern communication network technology

4 network information security technology

New generation broadband public cellular mobile communication technology

6 Digital Mobile Communication System Design

Broadband wireless access technology

8 image processing and multimedia communication technology

9 Intelligent Signal and Information Processing Technology

10 communication signal processing technology

1 1 embedded system and its application

Design of special chip for 12 communication system

13 softswitch and IP technology

Look at the direction you like!

As for school! Needless to say, Tsinghua, Beihou, Xidian, Nanyou, Dongda and so on. If you want to choose a better school, you can choose Xiamen University and so on.