Review of 5G MIMO Enhancement Technologies

To improve spectral efficiency, system capacity and throughput, and achieve higher peak rate, multi-antenna technology has been widely used in wireless network construction since the 4G LTE period. With the promotion of 5G network business deployment and the rapid development of wireless technology, new business forms are gradually formed, and the corresponding quality of service requirements are more stringent. In order to meet the user service experience of new applications, wireless technology continues to evolve in signaling delay, signaling overhead, spectral efficiency and coverage, and various solutions have been formed in the research of multi-antenna technology. This paper introduces the 5G NR MIMO enhancement technology scheme and standard evolution, analyzes the principle and performance advantages of key technologies and looks forward to the evolution direction of multi-antenna technology enhancement.