Method for passive wireless channel estimation in radio frequency network and apparatus for same
AssigneeThe Research Foundation for The State University of New York
InventorsMilutin Stanaćević, Samir Das, Petar Djurić, Athalye Akshay, Ryoo Jihoon, Yasha Karimi
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Abstract
A method, system and apparatus are provided for estimating at least one characteristic of a wireless communication channel between at least two passive backscattering radio frequency (RF) nodes, the method including measuring backscatter channel state information (BCSI) during communication between the at least two passive RF nodes; estimating, by at least one RF node of the at least two passive RF nodes, the at least one characteristic of the wireless communication channel based on the measured BCSI.
Claims18
A method for estimating at least one characteristic of a wireless communication channel between at least two passive backscattering radio frequency (RF) nodes, the method comprising:
- measuring backscatter channel state information (BCSI) during communication between the at least two passive RF nodes;
- estimating, by at least one RF node of the at least two passive RF nodes, the at least one characteristic of the wireless communication channel based on the measured BCSI,
- wherein the BCSI is a feature vector h(t)=[ΘBC AB ΔAE], with ΘBC, AB, and ΔAE being a backscatter channel phase, a backscatter amplitude, and a change in excitation amplitude between sampling intervals, respectively.
A passive radio frequency (RF) node, comprising:
- a backscatter modulator;
- and
- at least one processor configured to:
- measure backscatter channel state information (BCSI) during communication with at least one other passive RF node, and
- estimate at least one characteristic of at least one characteristic of the communication with the at least one other passive RF node based on the measured BCSI,
- wherein the BCSI is a feature vector comprising a backscatter channel phase ΘBC, a backscatter amplitude AB, and a change in excitation amplitude ΔAE between sampling intervals.
Dependencies are inferred from the claim text.