Enhanced Mobile Broadband Communication Systems*

This chapter considers a system model of 5G enhanced mobile broadband (eMBB) communications. It discusses some of the key techniques for improving throughput and system capacity. The key metric of eMBB systems is throughput. The chapter summarizes three approaches for increasing network throughput. The approaches include multiple input multiple output (MIMO), multicarrier techniques, and low‐density parity‐check (LDPC) codes. The MIMO techniques are key components of 5G systems because they significantly improve performances such as diversity gain, array gain, and multiplexing gain. The 5G multiple access schemes are based on multicarrier techniques. The candidates can be categorized as orthogonal multiple access and nonorthogonal multiple access. In order to achieve high spectral efficiency, channel coding and modulation are key components of the physical layer in 5G communication systems.