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:
Jul. 05, 2011
Filed:
Jan. 08, 2007
Seung-hoon Nam, Seoul, KR;
Myeon-kyun Cho, Seongnam-si, KR;
Jong-hyeuk Lee, Anyang-si, KR;
Joo-hwan Chun, Deajeon, KR;
Eun-yong Kim, Deajeon, KR;
Seung-Hoon Nam, Seoul, KR;
Myeon-Kyun Cho, Seongnam-si, KR;
Jong-Hyeuk Lee, Anyang-si, KR;
Joo-Hwan Chun, Deajeon, KR;
Eun-Yong Kim, Deajeon, KR;
Abstract
An optimum perturbation apparatus and method in a multi-antenna, multi-user communication system are provided. In the optimum perturbation method, upon receipt of modulation symbols, channel responses are decomposed into eigenvalues and eigenvectors by Single Value Decompositin (SVD) and a distortion value of the modulation symbols is estimated using the eigenvectors and the eigenvalues to minimize noise and interference power. The modulation symbols are precoded by combining the modulation symbols with the estimated distortion value.