Invention Grant
- Patent Title: Reduced complexity frequency domain equalization of multiple input multiple output channels
- Patent Title (中): 减少多输入多输出通道的复杂度频域均衡
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Application No.: US11628634Application Date: 2004-06-18
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Publication No.: US09077516B2Publication Date: 2015-07-07
- Inventor: Olav Tirkkonen , Mikko Kokkonen
- Applicant: Olav Tirkkonen , Mikko Kokkonen
- Applicant Address: FI Espoo
- Assignee: Nokia Technologies Oy
- Current Assignee: Nokia Technologies Oy
- Current Assignee Address: FI Espoo
- Agency: Harrington & Smith
- International Application: PCT/IB2004/002032 WO 20040618
- International Announcement: WO2006/008565 WO 20060126
- Main IPC: H03H7/40
- IPC: H03H7/40 ; H04L27/00 ; H04L1/06 ; H04L25/02 ; H04L25/03

Abstract:
A method for equalizing a frequency-selective transmission channel (103) with N inputs and MR outputs is shown, the transmission channel representable in a transformation domain based on N orthogonal sub-carriers, and wherein the transmission characteristics from the MT inputs to the MR outputs for each of the N respective orthogonal sub-carriers are represented by N respective sub-carrier channels (201), the method using (904) equalization filters (301, 302) for at least two of the N sub-carrier channels, wherein at least one set (501) of sub-carrier channels comprising at least two of the N sub-carrier channels is formed (901), wherein for at least one sub-carrier channel, a first-type equalization filter is used that is determined (902) based on a representation of at least one sub-carrier channel, and wherein for at least one sub-carrier channel, a second-type equalization filter is used that is derived (903) at least partially from the first-type equalization filter.
Public/Granted literature
- US20070253476A1 Reduced Complexity Frequency Domain Equalization of Multiple Input Multiple Output Channels Public/Granted day:2007-11-01
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