Sub-Terahertz (sub-THz) frequencies (100-300 GHz) with extreme modulation bandwidths are part of early 6G research. This presents many unknowns. One of those unknowns is exploring the level of system performance that is achievable and reasonable given new frequency bands, extreme modulation bandwidths, and new waveforms. This webinar will provide insight into this by discussing new sub- terahertz system-level design and test challenges presented by 6G. EVM measurement results at 140 GHz will be shown with varying waveforms and bandwidths up to an occupied bandwidth of 10 GHz. Low Signal-to-Noise (SNR) ratios are a challenge for wide bandwidth waveforms at sub-THz frequencies. Preamble and pilot-aided synchronization and channel estimation will be discussed to achieve more robust demodulation in low SNR environments. Understanding and addressing channel impairments at sub-THz frequencies will be another challenge. Sub-THz channel sounding will be discussed and the testbed receiver will be customized with a real-time adaptive equalizer FPGA implementation to address channel impairments.
Greg Jue is a 6G System Engineer at Keysight Technologies working on emerging millimeter-wave applications beyond 110 GHz. Greg authored Keysight’s new whitepaper “A New Sub-Terahertz Testbed for 6G Research”, and was a technical contributor to Keysight’s new “Engineering the 5G World” ebook. Greg wrote the design simulation section in Agilent Technologies LTE book, and has authored numerous articles, presentations, application notes, and whitepapers including Keysight’s “Implementing a Flexible Testbed for 5G Waveform Generation and Analysis”. Before joining HP/Agilent, Greg worked on system design for the Deep Space Network at the Jet Propulsion Laboratory, Caltech University.