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:
Nov. 01, 2005
Filed:
May. 11, 2001
Chao Wang, Ottawa, CA;
Wen Tong, Ottawa, CA;
Yuri S. Shinakov, Moscow, RU;
Alexandre M. Chloma, Moskovskaja Oblast, RU;
Mikhail G. Bakouline, Moskovskaja Oblast, RU;
Vitali B. Kreindeline, Moscow, RU;
Chao Wang, Ottawa, CA;
Wen Tong, Ottawa, CA;
Yuri S. Shinakov, Moscow, RU;
Alexandre M. Chloma, Moskovskaja Oblast, RU;
Mikhail G. Bakouline, Moskovskaja Oblast, RU;
Vitali B. Kreindeline, Moscow, RU;
Nortel Networks Limited, St. Laurent, CA;
Abstract
An impulse response matrix of a received signal in a TDMA communications system is approximated using a plurality of indirect variables of a linear complex vector. The indirect variables are used for synchronizing to the received signal and for tracking and frequency offset estimation during successive samples of the received signal, the samples being equalized in dependence upon the indirect variables. A demodulated signal is derived from the equalized received signal samples. Individual synchronization and tracking units, and a single equalizer, can be provided for a two-antenna receiver. Tracking errors can be used to adapt a parameter of the equalizer to reduce interference in the received signal.