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. 09, 2012
Filed:
Feb. 13, 2007
Yoichi Sato, Tsukuba, JP;
Tetsuya Higuchi, Tsukuba, JP;
Masahiro Murakawa, Tsukuba, JP;
Abstract
A serial-parallel converter/encoder unitinputs a transmission symbol data at a transmission symbol rate that is one-Nth of a base-point symbol rate. A precoder/collatorcreates a transmission symbol waveform at the base-point symbol rate. The transmission symbol waveform becomes a transmission signal after passing through a roll-off filterwith a band corresponding to the base-point symbol rate and a modulator. A reception signal demodulated by a demodulatoris input to a fractionally-spaced equalizerthat operates at the base-point symbol rate and is forcibly equalized at the transmission symbol rate by using a reference signal. A level of a signal output from the fractionally-spaced equalizerat the transmission symbol rate is determined by a level determining unitand becomes a reception symbol data by a sawtooth-function output unit