Multiple Antenna Techniques

Multiple antenna transmission is truly one of the key pillars supporting 5G aims of increased capacity and coverage. In this chapter, we will, at a high level, see how these techniques are applied in 5G NR. First, however, the basics of such techniques will be reviewed. Common to all such techniques is the use of multiple antennas at the transmitter, at the receiver, or both, together with intelligent signal processing and coding. These techniques can be broken down into the following three main categories: