System and method for estimating noise power level in a multi-signal communications channel
First Claim
Patent Images
1. A system of estimating noise power in a scalar, multi-signal communications channel, comprising:
- a data sampler for collecting N data samples from communications signals received from the communications channel;
a module for forming a temporal covariance matrix of the N data samples based on a model order estimate; and
a noise power estimator module for computing the eigenvalue decomposition of the temporal covariance matrix and ranking resultant eigenvalues from the minimum to the maximum for determining the noise power and setting a noise threshold based on an input signal using said temporal covariance matrix that is formed of N data samples of the signal input based on said model order estimate.
1 Assignment
0 Petitions
Accused Products
Abstract
A system estimates noise power in a scalar, multi-signal communications channel. A data sampler collects N data samples from communications signals received from the communications channel. A module forms a covariance matrix of the N data samples based on a model order estimate. A module also computes the eigenvalue decomposition of the covariance matrix and ranks resultant eigenvalues from the minimum to the maximum for determining the noise power.
-
Citations
26 Claims
-
1. A system of estimating noise power in a scalar, multi-signal communications channel, comprising:
-
a data sampler for collecting N data samples from communications signals received from the communications channel; a module for forming a temporal covariance matrix of the N data samples based on a model order estimate; and a noise power estimator module for computing the eigenvalue decomposition of the temporal covariance matrix and ranking resultant eigenvalues from the minimum to the maximum for determining the noise power and setting a noise threshold based on an input signal using said temporal covariance matrix that is formed of N data samples of the signal input based on said model order estimate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A receiver comprising:
-
a signal input for receiving a communications signal having data and synchronization pulses over a scalar, multi-signal communications channel; a first filter matched to a synchronization pulse; a second filter inversely matched to the synchronization pulse; a detector that determines the synchronization pulse based on outputs from the first and second filters; and a noise power estimator coupled to the detector for estimating the noise power and setting a noise threshold based on the input signal using a covariance matrix that is formed of the N data samples of the signal input based on a model order estimate. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
-
17. A method of estimating noise power in a scalar, multi-signal, communications channel, comprising:
-
collecting within a data sampler N data samples from communications signals received within the communications channel; forming a temporal covariance matrix of the N data samples based on a model order estimate; computing the eigenvalue decomposition of said temporal covariance matrix within a noise power estimator module to obtain eigenvalues; and ranking the eigenvalues from the minimum to the maximum for determining the noise power and setting the noise threshold based on said temporal covariance matrix and said model order estimate. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
-
-
26. A method of estimating noise power in a scalar, multi-signal, communications channel, comprising:
-
collecting within a data sampler N data samples from communications signals received within the communications channel; forming a covariance matrix of the N data samples based on a model order estimate and having a limited dimension greater than the number of expected signals; computing the eigenvalue decomposition of the covariance matrix within a noise power estimator module to obtain eigenvalues; and ranking the eigenvalues from the minimum to the maximum for determining the noise power.
-
Specification