Abstract
Since the 1970s, mobile communication has evolved from analog voice communication to a technology that can provide high-quality mobile broadband services today. The data rate of end users has reached several megabits per second, and the user experience has been continuously improved. In addition, with the increase of new mobile devices, the continuous growth of communication services and the continuous increase of network traffic, the existing wireless technology can no longer meet the needs of future communications. The 5th generation mobile communication system (5G) came into being, and its technological development is still in the exploratory stage. This article discusses the key technologies of 5G, massive MIMO (Multiple input multiple output) and NOMA (Non-orthogonal multiple access), briefly introduces their principles, and analyzes the advantages and potential research directions. Finally, this article looks forward to the development trend of 5G technology.
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