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:
Oct. 22, 2019
Filed:
Dec. 06, 2018
Institute for Information Industry, Taipei, TW;
Tsung-Yu Tsai, Tainan, TW;
Chin-Gwo Ma, New Taipei, TW;
Institute For Information Industry, Taipei, TW;
Abstract
A method for transmitting reference signals includes: determining, by a wireless transmitting device, a first vector set used for calculating a first vector subspace that includes a channel frequency response vector corresponding to a subcarrier; calculating, by the wireless transmitting device, a second vector set including several second vectors derived from performing dot product operations to each vector in the first vector set with a conjugate vector of each vector in the first vector set; calculating, by the wireless transmitting device, a null space of a second vector subspace spanned by the second vector set and determining, by the wireless transmitting device, a cover code from the null space; and transmitting a first reference signal and a second reference signal which is a dot product of the first reference signal and the cover code on the subcarrier from the wireless transmitting device to a wireless receiving device.