RECEIVER FOR BACKSCATTER COMMUNICATION

摘要

A backscatter receiving module and a method of backscatter communication is described. A front-end module receives the backscatter signal from an antenna and generates high-speed and low-speed data. A high-speed decoding module outputs first data in response to the high-speed data having high-speed symbols that were encoded at a first frequency. The high-speed symbols include a first subset of symbols and a second subset of symbols. A low-speed decoding module outputs second data in response to receiving the low-speed data that was encoded into the backscatter signal at a second frequency. The low-speed decoding module generates a first state of the second data when the high-speed symbols of the high-speed data are in the first subset for a length of time. The low-speed module generates a second state of the second data when the high-speed symbols of the high-speed data are in the second subset for the length of time.

主权项

1. A base station comprising:
a receiving antenna coupled to receive a backscatter signal from a backscattering tag; a backscatter receiving module coupled to receive the backscatter signal, wherein the backscatter receiving module includes:
a high-speed decoding module configured to generate first data by decoding high-speed symbols encoded at a first frequency into the backscatter signal, wherein the high-speed symbols include a first subset having multiple first symbols and a second subset having multiple second symbols; anda low-speed decoding module configured to output second data in response to low-speed data encoded at a second frequency into the backscatter signal, wherein the low-speed decoding module is configured to generate a first state of the second data when the high-speed symbols are in the first subset for a length of time, and wherein the low-speed module is configured to generate a second state of the second data when the high-speed symbols of the high-speed data are in the second subset for the length of time, the second frequency being lower than the first frequency.