Principle and Analysis of Anti-interference and Anti-fading Techniques in Mobile Communication

Abstract

In recent years, with the rapid development of mobile communication, anti-interference and anti-fading has always been an important research topic in mobile communication. There is a lot of interference in mobile channel, and the signal will fade because of various reasons. Designers must consider these factors in the design, development and production of mobile communication systems, so the corresponding anti-interference and anti-fading measures should be studied to ensure that the interference level does not exceed the threshold compared with useful signals during the operation of the system, or ensure that the transmission error rate is within a certain range. This paper introduces diversity technique, error correcting code, spread spectrum, adaptive equalization, digital modulation technique and so on. The advantages and disadvantages of different diversity techniques are analyzed, and their performances in common digital mobile communication systems are compared. Different types of error correcting codes are introduced, and their principles are analyzed. Then, other anti - interference and anti - fading techniques and their principles are briefly introduced. Finally, this paper analyzes the development direction of anti-interference and anti-fading techniques in the future mobile communication.