Spatial Interference Cancellation for Simultaneous Wireless and Information Power Transfer
Published in U.S. Patent and Trademark Office, 2020
Recommended citation: S. Gupta, E. Ghaderi, S. Shekhar, S. Venkatasubramanian and A. S. Ramani, "Spatial Interference Cancellation for Simultaneous Wireless and Information Power Transfer," U.S. Patent 10,804,988, Oct. 13, 2020. https://patents.google.com/patent/US10804988B2/en
A discrete-time delay (TD) technique in a baseband receiver array is disclosed for canceling wide modulated bandwidth spatial interference and reducing the Analog-to-Digital Conversion (ADC) dynamic range requirements. In particular, the discrete-time delay (TD) technique first aligns the interference using non-uniform sampled phases followed by uniform cancellation using a cancellation matrix, such as, for example, a Truncated Hadamard Transform implemented with antipodal binary coefficients.