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.

[1]  Patrick Roblin,et al.  Concurrent Dual-Band Modeling and Digital Predistortion in the Presence of Unfilterable Harmonic Signal Interference , 2015, IEEE Transactions on Microwave Theory and Techniques.

[2]  Siavash M. Alamouti,et al.  A simple transmit diversity technique for wireless communications , 1998, IEEE J. Sel. Areas Commun..

[3]  D.E. Root,et al.  Polyharmonic distortion modeling , 2006, IEEE Microwave Magazine.

[4]  Frederick W. Vook,et al.  MIMO and beamforming solutions for 5G technology , 2014, 2014 IEEE MTT-S International Microwave Symposium (IMS2014).

[5]  Christian Fager,et al.  Prediction of smart antenna transmitter characteristics using a new behavioral modeling approach , 2014, 2014 IEEE MTT-S International Microwave Symposium (IMS2014).

[6]  Seung Chan Bang,et al.  Transmit Diversity and Multiplexing Methods for 3G-LTE Downlink Control Channels , 2006, IEEE Vehicular Technology Conference.

[7]  Abdolali Abdipour,et al.  Analytical Modeling of MIMO-OFDM System in the Presence of Nonlinear Power Amplifier with Memory , 2013, IEEE Transactions on Communications.

[8]  Koen Buisman,et al.  Emulation of array coupling influence on RF power amplifiers in a measurement setup , 2016, 2016 87th ARFTG Microwave Measurement Conference (ARFTG).

[9]  Dennis R. Morgan,et al.  A robust digital baseband predistorter constructed using memory polynomials , 2004, IEEE Transactions on Communications.

[10]  Gordon L. Stuber.  Multi-antenna Techniques , 2011 .

[11]  F.M. Ghannouchi,et al.  Crossover Digital Predistorter for the Compensation of Crosstalk and Nonlinearity in MIMO Transmitters , 2009, IEEE Transactions on Microwave Theory and Techniques.

[12]  X. Begaud,et al.  Mutual coupling reduction between dual polarized microstrip patch antennas using compact spiral Artificial Magnetic Conductor , 2011, Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP).

[13]  Patrick Roblin,et al.  Automatic feed-forward cancellation of modulated harmonic , 2015, 2015 86th ARFTG Microwave Measurement Conference.

[14]  Helmut Bölcskei,et al.  An overview of MIMO communications - a key to gigabit wireless , 2004, Proceedings of the IEEE.

[15]  A. Fenn,et al.  Phased array antenna calibration and pattern prediction using mutual coupling measurements , 1989 .

[16]  Patrick Roblin,et al.  Concurrent Linearization: The State of the Art for Modeling and Linearization of Multiband Power Amplifiers , 2013, IEEE Microwave Magazine.

[17]  Patrick Roblin.  Nonlinear RF circuits and nonlinear vector network analyzers : interactive measurement and design techniques , 2011 .

[18]  Patrick Roblin,et al.  Digitally supported feed-forward harmonic cancellation for filter-less ultra-wideband transmitters , 2014, 2014 IEEE International Microwave and RF Conference (IMaRC).