RF Front-End Flexibility, Self-Calibration, and Self-Linearization: Characterizing and Mitigating Nonlinearities in SDR MIMO Systems for Concurrent Multiband Operation

The world's thirst for wireless communication keeps increasing as users are attracted to new broadband services for accessing data in the cloud, video conferencing, and streaming videos using various user equipment. This growing demand for higher data rates (> = 1 G/bs) is motivating vigorous research activities worldwide to develop wide-band and multiband systems. The fifth generation (5G) of wireless standards [Release (Rel)-14 in 2017, Rel-15 due in 2018, and Rel-16 due in 2019] are being developed for cellular communication by the 3rd Generation Partnership Project (3GPP) to directly address these issues [1]. We will first briefly review these developments to assess some of the new testing and calibration challenges they will introduce.