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:
Oct. 01, 2013
Filed:
Jan. 11, 2011
In-tae Kang, Seongnam-si, KR;
Jung-hwa Bae, Suwon-si, KR;
Jung-uk Woo, Hwaseong-si, KR;
Shin-ho Kim, Suwon-si, KR;
Sang-min Bae, Yongin-si, KR;
Jong-han Lim, Seoul, KR;
Dong-min Kim, Anyang-si, KR;
Bo-rham Lee, Seoul, KR;
In-Tae Kang, Seongnam-si, KR;
Jung-Hwa Bae, Suwon-si, KR;
Jung-Uk Woo, Hwaseong-si, KR;
Shin-Ho Kim, Suwon-si, KR;
Sang-Min Bae, Yongin-si, KR;
Jong-Han Lim, Seoul, KR;
Dong-Min Kim, Anyang-si, KR;
Bo-Rham Lee, Seoul, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A method and apparatus for reducing a Peak to Average Power Ratio (PAPR) using peak windowing is provided. In the apparatus, an absolute value calculator calculates an absolute value of an input signal, a subtractor subtracts a predetermined clipping threshold level from the absolute value, a smoothing unit performs smoothing on the subtracted signal according to a predetermined smoothing scheme and outputs a first smoothed signal, an adder adds the first smoothed signal to the clipping threshold level, an inverse calculator outputs a second smoothed signal by multiplying the clipping threshold level by an inverse of the added signal, and a multiplier outputs a final PAPR-reduced signal by multiplying the input signal by the second smoothed signal. The method and apparatus address an overcompensation problem while processing signals having a large bandwidth and a high data rate without delay, thereby minimizing the clipping influences on Bit Error Rate (BER) and Adjacent Channel Leakage Ratio (ACLR) performances.