Brief introduction of diversity technology

The application of diversity technology is to reduce the impact of signal fading , The stability of a wireless signal determines the reliability of the equipment , In the natural environment, the impact of various obstacles , Make the transmitted wireless signal produce the phenomenon of slow fading and fast fading , Using diversity can increase the strength of the signal , Make the receiving equipment better demodulate the required signal , Diversity one is decentralized transmission , And the way of transmitting signals is decentralized transmission , A plurality of signals with strong independence and the same information are formed at the receiving end , The other is centralized processing , Combine multiple independent signals to enhance the transmission quality of the signal , The way of diversity is macro diversity, that is, site diversity , Differential set is diversity in communication system , Macro diversity deals with slow fading , Differential sets deal with fast fading , Differential sets can also be divided into spaces 、 Time 、 frequency 、 Polarization 、 angle . Six diversity methods such as field components . There is the greatest choice for merging 、 max ratio 、 Equal gain three . For reference only ！