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:
Mar. 27, 2012
Filed:
Jun. 07, 2009
Yung-szu Tu, Taipei County, TW;
Jiunn-tsair Chen, Hsinchu County, TW;
Chun-hsien Wen, Hsinchu County, TW;
Cheng-hsuan Wu, Taipei, TW;
Chien-cheng Lin, Taichung County, TW;
Yung-Szu Tu, Taipei County, TW;
Jiunn-Tsair Chen, Hsinchu County, TW;
Chun-Hsien Wen, Hsinchu County, TW;
Cheng-Hsuan Wu, Taipei, TW;
Chien-Cheng Lin, Taichung County, TW;
Ralink Technology, Corp., Jhubei, Hsinchu County, TW;
Abstract
An approximation method for SNR soft information for a transmitter of a communications system includes obtaining a conditional probability density function (PDF) corresponding to a response message of a transmitted packet, obtaining a PDF of a probability distribution model, and a mean and a variance of the PDF, by approximating the conditional PDF corresponding to the response message with the probability distribution model, and calculating a second mean and a second variance of a second PDF approximated to a conditional PDF of SNR corresponding to the transmitted packet according to the mean and the variance of the PDF, and a first mean and a first variance of a first PDF approximated to a conditional PDF of SNR corresponding to another transmitted packet immediately preceding the transmitted packet.