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:
Apr. 29, 2014
Filed:
Sep. 23, 2011
Jong Soo Lim, Daejeon, KR;
Sun Hyoung Kwon, Seoul, KR;
Jong Soo Lim, Daejeon, KR;
Sun Hyoung Kwon, Seoul, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
A data transmission apparatus is provided. A symbol mapper performs symbol mapping on information about an optimum key index that instructs a modified Walsh-Hadamard matrix that causes a minimum peak-to-average power ratio and generates a plurality of key symbols. A modified Walsh-Hadamard transformer generates a plurality of modified Walsh-Hadamard-transformed data symbols by performing modified Walsh-Hadamard transform on a plurality of data symbols according to a modified Walsh-Hadamard matrix that an optimum key index instructs. An inverse Fourier transformer generates a plurality of inverse Fourier-transformed symbols by performing inverse Fourier transform on a plurality of key symbols and a plurality of modified Walsh-Hadamard-transformed data symbols. A transmitter transmits a plurality of inverse Fourier-transformed symbols to a channel through at least one antenna.