Method and device for the aggregation of signals from sampling values
AssigneeAlcatel
InventorHans Jürgen Matt
Life of this patent
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Abstract
A method of forming an aggregation of N>1 band-limited time signals, each with a bandwidth of ≦B, which are present as analog and/or digital sampling values, with a respective sampling frequency of fA>2B, is characterized in that the sampling values of all N time signals are offset in time and superimposed on each other, and are jointly input to a low-pass filter (12) with a bandwidth of B′>B, and that a composite signal is tapped off from the output of the low-pass filter (12). This allows the aggregation to be performed in a considerably shorter calculation time, a number of slow and expensive aggregation elements can possibly be saved, and the damping of the signals during processing can be minimized, as well as the corresponding loss of information.
Claims16
A method of forming an aggregation of N>1 band-limited time signals, each with a bandwidth ≦B, which are present as analog and/or digital sampling values, where the respective sampling frequency is fA>2B, comprising the steps of:
- 1) offsetting in time and superimposing on each other the sampling values of all N time signals;
- 2) jointly routing the superimposed sampling values to a low-pass filter (12;
- 22;
- 32;
- 42;
- 52;
- 62;
- 72) with a bandwidth of B′>B;
- 3) tapping off a composite signal from the output of the low-pass filter (12;
- 22;
- 32;
- 42;
- 52;
- 62;
- 72).
A method as claimed in 8, wherein the superimposing of sampling values and the lower sampling frequency of the composite signal are performed with a digital signal processor.
A method as claimed in 3, wherein the superimposing of sampling values and the lower sampling frequency of the composite signal are performed with a digital signal processor.
A method as claimed in 12, wherein the superimposing of sampling values and the lower sampling frequency of the composite signal are performed with a digital signal processor.
A device for forming an aggregation of N>1 band-limited time signals, each with a bandwidth ≦B, which are present as analog and/or digital sampling values, where the respective sampling frequency is fA>2B, comprising;
- A) a time-division multiplex unit (11;
- 21;
- 31;
- 61;
- 71), wherein the sampling values of all N time signals are offset in time and superimposed on each other;
- and
- B) a low-pass filter (12;
- 22;
- 32;
- 42;
- 52;
- 62;
- 72) with a bandwidth of B′>B which is connected to the time-division multiplex unit (11;
- 21;
- 31;
- 61;
- 71), into which the offset in time and superimposed sampling values can be jointly input, the low-pass filter having an output so that a composite signal can be tapped off from its output.
Dependencies are inferred from the claim text.