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. 18, 2008
Filed:
Sep. 28, 2004
Adriaan Kamerman, Nieuwegein, NL;
Isabella Modonesi, De Bilt, NL;
Tim Schenk, Eindhoven, NL;
Xiao-jiao Tao, Losser, NL;
Allert Van Zelst, Woerden, NL;
Adriaan Kamerman, Nieuwegein, NL;
Isabella Modonesi, De Bilt, NL;
Tim Schenk, Eindhoven, NL;
Xiao-Jiao Tao, Losser, NL;
Allert van Zelst, Woerden, NL;
Agere Systems Inc., Allentown, PA (US);
Abstract
In a multiple-input, multiple-output (MIMO) system, a receiver is implemented with at least one additional receive path beyond the number of transmit antennas used to transmit the signals (e.g., wireless OFDM signals) received at the receiver. In one embodiment, the additional receive path is used to reduced co-channel interference (CCI) in the recovered OFDM signals. In particular, each receive path applies recursive filtering to generate separate subcarrier signals. A processor converts the separate subcarrier signals from the different receive paths into a first set of subcarrier signals corresponding to each transmitted OFDM signal, where each first set of subcarrier signals has desired signal and possibly CCI. The processor also generates a second set of subcarrier signals corresponding to the CCI. The processor subtracts portions of the second set of subcarrier signals from each first set of subcarrier signals to generate recovered OFDM signals having reduced CCI.