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- Create Date June 27, 2023
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5G new radio (NR) is conceived to provide new service types, namely, enhanced mobile broadband (eMBB), ultra-reliable and low latency communications (URLLC), and massive machine-type communications (mMTC). Among these, eMBB is expected to provide exceptionally fast data speeds to facilitate services that have high throughput requirements such as high definition (HD) video streaming, virtual reality (VR), and augmented reality (AR). The goal of eMBB is not just to serve faster transmission speeds when a user is near a base station, but also to deliver unparalleled end-user experiences in crowded areas such as airports or sport stadiums, thus allowing users to enjoy seamless high-quality streaming services, regardless of their locations.
Massive multi-input multi-output (MIMO) is a major breakthrough technology that improves the capacity and user experience of 5G eMBB. Instead of broadcasting data throughout the entire coverage area, the massive MIMO system concentrates the signal energy to a specific user, resulting in significant improvement of throughput and efficiency. This characteristic not only increases the downlink (DL) and uplink (UL) signal strength but also enhances the cell throughput by allocating multiple beams to one or multiple users. The spatially optimized signal can minimize its interference toward other users and/or adjacent cells and reduces interference levels of the entire network, especially in interference limited cell deployments [1-2].