Method and a system for estimating errors introduced in a time-interleaved analog-to-digital converter system
First Claim
1. A method for estimating a plurality of relative channel-errors for at least one signal with respect to a reference signal belonging to a group of digitized signals received by an estimation module;
- wherein said method is performed by said estimation module, the method comprising;
defining a loss function representing a difference between said reference signal and a remaining signal in said group of digitized signals, wherein said group of digitized signals are produced by an analog-to-digital module comprising a plurality of parallel and time interleaved analog-to-digital converters, each converter producing a respective one of said group of digitized signals;
selecting the reference signal in said group of digitized signals;
selecting the remaining signal from the remaining signals in said group of digitized signals; and
minimizing the loss function to thereby obtain an estimate or a representation of an estimate of said plurality of relative channel-errors for the selected remaining signal.
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Accused Products
Abstract
A method and a module for estimating a plurality of relative channel-error for at least one signal with respect to a reference signal. The signals and are produced by an analog-to-digital module including parallel and time interleaved analog-to-digital converters and are received by an estimation module. The method is performed by the estimation module and includes defining a function representing a relationship between the reference signal and an arbitrary signal in the group of signals, selecting a first reference signal in the group of signals, selecting a second signal from the remaining signals in the group, optimizing the function so as to obtain an estimate of the plurality of relative channel-error, and repeating the selecting a second signal and optimizing the function for each remaining signal.
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Citations
21 Claims
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1. A method for estimating a plurality of relative channel-errors for at least one signal with respect to a reference signal belonging to a group of digitized signals received by an estimation module;
- wherein said method is performed by said estimation module, the method comprising;
defining a loss function representing a difference between said reference signal and a remaining signal in said group of digitized signals, wherein said group of digitized signals are produced by an analog-to-digital module comprising a plurality of parallel and time interleaved analog-to-digital converters, each converter producing a respective one of said group of digitized signals; selecting the reference signal in said group of digitized signals; selecting the remaining signal from the remaining signals in said group of digitized signals; and minimizing the loss function to thereby obtain an estimate or a representation of an estimate of said plurality of relative channel-errors for the selected remaining signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- wherein said method is performed by said estimation module, the method comprising;
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11. An estimation module for estimating a plurality of relative channel-errors or a representation thereof for at least one signal with respect to a reference signal belonging to a group of digitized signals, where said estimation module is configured to operatively receive said digitized signals and to operatively select the reference signal in said group of signals, and wherein the estimation module is further configured to operatively:
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select a remaining signal from the remaining signals in said group of digitized signals, wherein said group of digitized signals are produced by an analog-to-digital module comprising a plurality of parallel and time interleaved analog-to-digital converters, each converter producing a respective one of said group of digitized signals; and minimize a loss function, representing a difference between said reference signal and the selected remaining signal to thereby obtain an estimate or a representation of an estimate of said plurality of relative channel-errors for the selected remaining signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A system for reducing or eliminating a plurality of relative channel-errors for at least one signal with respect to a reference signal belonging to a group of digitized, the system comprising:
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an estimation module configured to operatively receive said group of digitized signals and to provide an estimate of the plurality of relative channel-errors or a representation of the estimate, wherein said group of digitized signals are produced by an analog-to-digital module comprising a plurality of parallel and time interleaved analog-to-digital converters, each converter producing a respective one of said group of digitized signals, and a reconstruction module configured to operatively apply said estimate of said plurality of relative channel-errors or the representation of the estimate to said at least one signal to reduce or eliminate the plurality of relative channel-error for the at least one signal.
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Specification