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:
Feb. 26, 2013
Filed:
Dec. 21, 2009
Jia-hao Wu, Gueishan Township, Taoyuan County, TW;
Yun-yi Shih, Gueiren Township, Tainan County, TW;
Pang-an Ting, Fongyuan, TW;
Ming-che Lin, Longjing Township, Taichung County, TW;
Jia-Hao Wu, Gueishan Township, Taoyuan County, TW;
Yun-Yi Shih, Gueiren Township, Tainan County, TW;
Pang-An Ting, Fongyuan, TW;
Ming-Che Lin, Longjing Township, Taichung County, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A transmitter and the method therefor are provided. The transmitter is applied in an orthogonal frequency division multiplexing (OFDM) based or other multicarrier communication systems. The transmitter uses N sub-carriers. Among the N sub-carriers, L sub-carriers (or tones) are reserved for PAPR reduction. L is less than N. The method includes the following steps. Original frequency domain data symbols are generated and fed into the reserved-tone symbol generation unit. The reserved-tone symbols are generated by using pure frequency domain signal processing. Then the reserved-tone symbols are combined with original data symbols to generate combined PAPR reduction signal. The resultant PAPR reduction signal can be fed into reserved-tone symbol generation unit iteratively to obtain updated reserved-tone symbols. For proper iterations, the original data symbols combined with L frequency domain reserved-tone symbols will result in lower PAPR transmit signal.