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. 27, 2014
Filed:
May. 04, 2012
Jae Hyun Park, Busan, KR;
Byung Jang Jeong, Daejeon, KR;
Sung Hyun Hwang, Daejeon, KR;
Jung Sun Um, Daejeon, KR;
Hoi Yoon Jung, Daejeon, KR;
Jin Suk Pak, Daegu, KR;
Sun Min Lim, Daejeon, KR;
Sang Won Kim, Daejeon, KR;
Jae Hyun Park, Busan, KR;
Byung Jang Jeong, Daejeon, KR;
Sung Hyun Hwang, Daejeon, KR;
Jung Sun Um, Daejeon, KR;
Hoi Yoon Jung, Daejeon, KR;
Jin Suk Pak, Daegu, KR;
Sun Min Lim, Daejeon, KR;
Sang Won Kim, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
Provided is a communication method of a secondary transmitter included in a multiple-antenna based multiple input multiple output (MIMO) cognitive radio communication system, the method including: estimating an interference channel between the secondary transmitter and a primary user in each of at least one first spectrum band that is being used in a primary system; calculating an orthogonal projection matrix to cancel interference with respect to the primary user from the interference channel; calculating an effective channel between the secondary transmitter and a secondary receiver based on the to orthogonal projection matrix; and selecting an index of an optimal spectrum band from the at least one first spectrum band based on the orthogonal projection matrix and the effective channel.