IMS2018: Digital Pre-Distortion and Post-Correction from DC to mmWave for Wireline and Optical Communications
SungWon Chung, University of Southern California, Los Angeles, CA, USA
Hermann Boss, Rhode & Schwartz, Munich, Germany
Noriaki Kaneda, Nokia Bell Labs, Murray Hill, NJ, USA
This workshop overviews the recent advancements in digital pre-distortion (DPD) and digital post-correction (DPC) techniques over a broad range of spectrum from DC to mmWave. Beyond the classical DPD applications on wireless and satellite power amplifier linearization, this workshop will culminate the applications of the DPD and DPC techniques for wireline and optical communications. With wireline communication, to advance the data rate limit, designers are leveraging a high-order modulation, which requires a digital-to-analog converter (DAC) based transmitter along with an analog-to-digital converter (ADC) based receiver. Since the poor linearity of high-speed data converters often becomes a performance bottleneck with such high performance wireline transceivers and also with wireline MIMO transceivers, DPC and DPD techniques become essential not only to the equalization of nonideal lossy channels but also to the linearization of nonlinearities in high-speed circuit elements. As the recent trend of using a high-order wideband modulation continues with Tb/s coherent optical communication, fiber nonlinearity has become a critical design challenge. A robust and low-power implementation of DPC and DPD, which includes the realization of nonlinearity tolerant modulation and coding schemes as well as adaptive pre-emphasis and equalization, is becoming increasingly important. This workshop for the first time brings together researchers from industry and academic working on diverse DPD and DPC techniques in wireless, wireline, and optical communications in one place, revisiting the fundamental principles in common as well as providing a unique opportunity to learn from cross-platform implementations.