Coding and modulation techniques for high spectral efficiency transmission in 5G and satcom

Achieving high spectral efficiency is the key requirement of 5G and Satcom systems because it provides us with much lower cost per bit. In order to achieve high spectral efficiency, channel coding and modulation are the key part of the physical layer. Basically, high spectral efficiency can be achieved when adopting a high order modulation and low code rate at a high SNR. However, the transmit power is limited in practical wireless communication systems. The high order modulation and low code rate is restrictively used. Thus, the integrated version of 5G and Satcom needs a new type of channel coding scheme. In this paper, we look into 5G requirements and Satcom's role in 5G, review candidate error correction coding schemes for 5G and future Satcom in terms of spectral efficiency, and evaluate the performance of the candidate error correction codes.