The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 2016
Filed:
May. 20, 2014
The United States of America As Represented BY the Secretary of the Navy, San Diego, CA (US);
Douglas S. Hulbert, San Diego, CA (US);
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY, Washington, DC (US);
Abstract
A method involves modulation of polarization states at a radio network's transmit antennas and configuration of complementary polarization states at the radio network's receiving antennas such that variations in measured voltages at receivers' antennas convey digital information and provide a multiple access channel to supplement other network communications. A calibration interval may be used, during which the network receivers measure the two distinct voltages from each transmitter during separate time intervals. Each receiver keeps a separate accumulation for each transmitter wherein each received sample is weighted by +1 or −1 according to the column of a Hadamard matrix. After the sample periods and accumulations have been completed, each receiver offsets its accumulation using a normalization term. Each receiver may then decode bits received from each transmitter using the offset completed sum for each respective transmitter.