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:
Aug. 25, 2015
Filed:
Jun. 14, 2013
Korea University Research and Business Foundation, Seoul, KR;
Abstract
A limited feedback method and apparatus for two-way relay channels with physical network coding are disclosed. An embodiment of the invention provides a method of providing parameters as feedback to two terminals according to channel conditions by a relay for two-way communication in a two-way relaying system using PNC (physical network coding). This method includes: (a) quantizing phase difference information of two-way channels of the two terminals in consideration of whether or not a ratio of a minimum distance between constellation points is periodic according to modulation level; and (b) transmitting feedback information, which contains at least one of the phase difference information and the power control information of the two terminals, as a limited number of bits to the two terminals. Here, the number of bits for the phase difference information or the number of bits for the power control information is determined according to the modulation level.