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. 05, 2021
Filed:
Feb. 18, 2020
Quang Nguyen, Saskatoon, CA;
Ha H. Nguyen, Saskatoon, CA;
Brian Berscheid, Saskatoon, CA;
Eric Salt, Saskatoon, CA;
Quang Nguyen, Saskatoon, CA;
Ha H. Nguyen, Saskatoon, CA;
Brian Berscheid, Saskatoon, CA;
Eric Salt, Saskatoon, CA;
Vecima Networks Inc., Victoria, CA;
Abstract
In embodiments of the presently described subject matter, two efficient PAPR reduction methods for OFDM signals based upon the principle of tone reservation and building upon the clipping noise analysis presented in 'Analysis of clipping noise and tone reservation algorithms for peak reduction in OFDM systems,' L. Wang and C. Tellambura,., vol. 57, pp. 1675-1694, May 2008 are provided, each comprising two stages. The first stage is performed offline to prepare a set of cancellation signals based on the settings of the OFDM system. In particular, these cancellation signals are constructed to cancel signals at different levels of maximum instantaneous power that are above a predefined threshold. The second stage is performed online and in an iterative manner to reduce the peaks of OFDM symbols by using the cancellation signals constructed in the first stage.