Filter for time division multiplex filtering of a plurality of data trains, and operating methods therefor

US6532483B1 · kind B1 · utility

Assignee

• Infineon Technologies AG · DE

Inventors

• Dirk Wendel · Unterhaching, DE
• Sonke Mehrgardt · March, DE
• Xiaoning Nie · Birkenfeld, DE

Key dates

• Filing date: Mar 27, 2000
• Grant date: Mar 11, 2003
• Expiry date: Mar 27, 2020

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03H2218/06
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

A filter for filtering n data trains by time division multiplexing includes data channels for receiving data train values, registers subdivided into n groups for buffer storage of the data train values or derived values, and adders each having inputs. Each of the n groups is connected to one of the data channels. The adders and the registers alternatively connect to form a chain. The first input of respective adders connected upstream of a respective register of an ith group (0≦i≦n−1) has a connection to respective data channels assigned to the ith group, and the second input is connected to a respective register of a group having a number (i−1)mod n without an intervening register of another group. The filter is used to parallelly decimate data trains by a common factor. A filter configuration includes the filter and two multipliers. A method is also provided.