Invention Grant
- Patent Title: Method for adapting filter cut-off frequencies for the transmission of discrete multitone symbols
- Patent Title (中): 适用于离散多音符号传输的滤波器截止频率的方法
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Application No.: US10175332Application Date: 2002-06-19
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Publication No.: US07991069B2Publication Date: 2011-08-02
- Inventor: Dietmar Straeussnigg
- Applicant: Dietmar Straeussnigg
- Applicant Address: DE Neubiberg
- Assignee: Lantiq Deutschland GmbH
- Current Assignee: Lantiq Deutschland GmbH
- Current Assignee Address: DE Neubiberg
- Agency: Maginot, Moore & Beck
- Priority: DE10129317 20010619
- Main IPC: H04L27/00
- IPC: H04L27/00

Abstract:
A method for adapting filter cut-off frequencies for the transmission of discrete multitone symbols, where a transmit symbol datastream consisting of discrete multitone symbols is applied to an interpolation device, the transmit symbol datastream is interpolated with a symbol rate in the interpolation device, an interpolated symbol datastream is filtered in a first low-pass filtering device in accordance with a first filter cut-off frequency, which can be predetermined by a first filter cut-off frequency determining device, a digital symbol datastream obtained after a digital-analog conversion, transmission and analog-digital conversion, is filtered at the receiver end in a second low-pass filtering device in accordance with a second filter cut-off frequency, which can be predetermined by a second filter cut-off frequency determining device, in order to provide an equalized symbol datastream, the equalized symbol datastream is decimated in a decimation device and the decimated received symbol datastream consisting of discrete multitone symbols is provided to a multitone receiver device.
Public/Granted literature
- US20030026352A1 Method for adapting filter cut-off frequencies for the transmission of discrete multitone symbols Public/Granted day:2003-02-06
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