Enabling Spatial Spectrum Efficiency of Coexisting Smart and Reconfigurable Radios

­Competitive Advantages:

• With the use of advances in wireless communication with the ABC technique, throughput can be maximized for a given region

• Multiple ABCs could be deployed to make a radiation rejection zone to protect from any secondary transmissions

• ABC technique allows shaping waves in the spatial domain to be analogous to the time-frequency domains

Summary:

Research has been done on shaping electromagnetic radiation in the time and frequency domain via the adequate design of waveform, pulse shaping, and filtering to control self and multi-user interference at the transmitter and receiver ends, but energy leakage is considered a significant problem, degrading the overall system performance. Researchers at the University of South Florida have worked out this problem with a novel concept of using Ambient backscatter communication (ABC).  Electromagnetic radiation is controlled over a region by using multiple ABC nodes in sync. This demonstrates the mutual usage of ABCs for electromagnetic energy shaping in existing radio systems. The use of ABC allows a shaped wave in the spatial domain analogous to wave shaping in the time-frequency domain. Multiple coordinated ABCs can be used to create radiation rejection zones for primary user usage.

Small Antenna Array Realization of an ABC node including variable gain amplifier (VGA) and phase shifter (PS)

Desired Partnerships:

• License
• Sponsored Research
• Co-Development