Channel modeling for 5G and beyond

The wide variety in enabling technologies, operating scenarios, environments, and use cases required for the fifth generation (5G) communication system and beyond 5G (B5G) entails the availability of descriptive channel models. In this chapter, we revise the key requirements of efficient channel modeling for 5G and beyond, highlight the outstanding and expected challenges, and present the main efforts made in this domain by leading industrial and research entities. We review channel modeling through machine learning (ML) as a promising channel modeling approach and revise the compressed sensing (CS)-based channel modeling and estimation framework.