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:
Jul. 05, 2011
Filed:
Dec. 26, 2005
Sung-ik Park, Daejeon, KR;
Seung-won Kim, Fairfax, VA (US);
Soo-in Lee, Daejeon, KR;
Hyoung-nam Kim, Busan, KR;
You-seok Lee, Busan, KR;
Sung-Ik Park, Daejeon, KR;
Seung-Won Kim, Fairfax, VA (US);
Soo-In Lee, Daejeon, KR;
Hyoung-Nam Kim, Busan, KR;
You-Seok Lee, Busan, KR;
Abstract
A decision feedback equalization apparatus includes a channel estimation unit estimating a channel on received signal based on the received signal and a training sequence; a channel matched filter maximizing SNR from the channel estimated by the channel estimation unit changing channel characteristics of the received signal; a noncausal filter approximating the changed channel; an equalizer input signal storage unit storing received symbols passed through the channel matched and the noncausal filters; a channel equalization unit performing a decision feedback equalization; a Trellis decoder detecting symbol from a channel-equalized signal; a mode selection unit selecting a specific mode; an error signal calculator comparing an output signal of the selected mode with an output signal of the channel equalization unit to calculate an error signal; and a tap coefficient updater updating tap coefficients to the channel equalization unit, an output signal from the storage unit, and an output signal from the Trellis decoder.