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:
Sep. 04, 2007
Filed:
Oct. 20, 2003
Marko Kocic, Somerville, MA (US);
Lidwine Martinot, Belmont, MA (US);
Zoran Zvonar, Boston, MA (US);
Marko Kocic, Somerville, MA (US);
Lidwine Martinot, Belmont, MA (US);
Zoran Zvonar, Boston, MA (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
Although DC offset reduction schemes can be applied in the analog domain, the residual static DCO in baseband is still present, significantly influencing the performance of high-level modulation schemes employed by recent high-data-rate wireless communications standards. In order to achieve satisfactory performance, DCO compensation algorithms are required in the digital domain. One such algorithm was developed which is based on joint estimation of the Channel Impulse Response (CIR) and the static DCO and ensures satisfactory performance of EDGE modem with direct conversion radio architectures. A further modification of the joint estimation algorithm, the so-called 'perturbed joint L', results in further improvement in the performance of the EDGE equalizer in critical fading channels.