Background
Current wireless connectivity at 60 GHz has demonstrated 10 Gb/s at 60 pJ/bit energy dissipation, but falls way short of meeting the bandwidth requirements for future off-chip interconnects (multi-100 Gb/s progressing towards to 1.0 TB/s). In this application, we propose multiple parallel wireless channels that can work simultaneously sharing the same frequency and channel using communication theoretic spatial-domain multiplexing techniques. Under the same total power constraint, such architectures have orders of magnitude more channel capacity, thereby providing a scalable solution towards wireless multi-100 Gb/s connectivity.
At such high mmWave frequencies, where the wavelength in silicon is a few 100 μm, multiple such antennas and wireless transceivers acting as wireless hubs could be integrated in one chip. Each such hub establishes separate multi-10 Gb/s wireless links with each such hub of the communicating chip/device. All the channels operate simultaneously by radiating the data wirelessly from the chip with onchip antennas. Evidently, for simultaneous operation, frequency-domain-multiplexing is impractical since it requires multiple frequency synthesizers covering 100s of GHz. In this methodology, we overcome this through spatial-domain multiplexing using communication theoretic MIMO techniques in both line-of-sight and non-line-of-sight links. This enables the net capacity to progress towards multi-100 Gb/s.
Faculty Inventor
Kaushik Sengupta is an Assistant Professor in the Department of Electrical Engineering at Princeton University. He received the B.Tech. and M.Tech. degrees in electronics and electrical communication engineering from Indian Institute of Technology (IIT), both in 2007, and the MS and PhD degrees in electrical engineering from the California Institute of Technology in 2008 and 2012, respectively. In February 2013, he joined the faculty of the Department of Electrical Engineering at Princeton University. His research interests are in the areas of integrated electronic and photonic circuits and systems, electromagnetics, optics for various applications in sensing, imaging and high-speed communication.
Dr. Sengupta received the Charles Wilts prize for the best thesis in Electrical Engineering at Caltech in 2012-13. He was the recipient of the IBM PhD fellowship (2011-12), the IEEE Solid State Circuits Society Predoctoral Achievement Award, the IEEE Microwave Theory and Techniques Graduate Fellowship, and the Analog Devices Outstanding Student Designer Award (2011). He was also the recipient of the Prime Minister Gold Medal Award of IIT (2007), the Caltech Institute Fellowship, the Most Innovative Student Project Award of the Indian National Academy of Engineering (2007), and the IEEE Microwave Theory and Techniques Undergraduate Fellowship (2006). He was the co-recipient of IEEE RFIC Symposium Best Student Paper Award in 2012.
Intellectual Property Status
Patent protection is pending.
Princeton is seeking industrial collaborators for the further development and commercialization of this opportunity.
Contact
Michael Tyerech
Princeton University Office of Technology Licensing • (609) 258-6762• tyerech@princeton.edu
Laurie Bagley
Princeton University Office of Technology Licensing • (609) 258-5579• lbagley@princeton.edu