Telescoping window based equalization
First Claim
1. A method comprising:
- receiving at least one wireless communication and sampling the received wireless communication producing samples;
estimating a channel response corresponding to the at least one wireless communication;
producing an initial channel correlation matrix based on the received samples and the channel response;
factorizing the initial channel correlation matrix to produce a Cholesky factor;
performing forward substitution using the Cholesky factor and received samples to produce initial values for the at least one wireless communication;
updating the Cholesky factor using additional channel correlation matrix values producing an updated Cholesky factor; and
producing subsequent values for the at least one wireless communication using the updated Cholesky factor.
1 Assignment
0 Petitions
Accused Products
Abstract
At least one wireless communication is received and sampled to produce samples. A channel response is estimated corresponding to the at least one wireless communication. An initial channel correlation matrix is produced based on the received samples and the channel response. The initial channel correlation matrix is factorized to produce a Cholesky factor. Forward substitution is performed using the Cholesky factor and received samples to produce initial values for the at least one wireless communication. The Cholesky factor is updated using additional channel correlation matrix values, producing an updated Cholesky factor. Subsequent values for the at least one wireless communication are produced using the updated Cholesky factor.
106 Citations
24 Claims
-
1. A method comprising:
-
receiving at least one wireless communication and sampling the received wireless communication producing samples;
estimating a channel response corresponding to the at least one wireless communication;
producing an initial channel correlation matrix based on the received samples and the channel response;
factorizing the initial channel correlation matrix to produce a Cholesky factor;
performing forward substitution using the Cholesky factor and received samples to produce initial values for the at least one wireless communication;
updating the Cholesky factor using additional channel correlation matrix values producing an updated Cholesky factor; and
producing subsequent values for the at least one wireless communication using the updated Cholesky factor. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A wireless transmit/receive unit (WTRU) comprising:
-
means for receiving at least one wireless communication;
means for sampling the received wireless communication producing samples;
means for estimating a channel response corresponding to the at least one wireless communication;
means for producing an initial channel correlation matrix based on the received samples and the channel response;
means for factorizing the initial channel correlation matrix to produce a Cholesky factor;
means for performing forward substitution using the Cholesky factor and received samples to produce initial values for the at least one wireless communication;
means for updating the Cholesky factor using additional channel correlation matrix values producing an updated Cholesky factor; and
means for producing subsequent values for the at least one wireless communication using the updated Cholesky factor. - View Dependent Claims (8, 9, 10, 11, 12)
-
-
13. A wireless transmit/receive unit (WTRU) comprising:
-
an antenna or antenna array for receiving at least one wireless communication;
a sampling device configured to receive the at least one wireless communication and produce samples of the at least one received wireless communication;
a channel estimation device for estimating a channel response corresponding to the at least one wireless communication;
a channel correlation computation device configured to receive the channel response and produce an initial channel correlation matrix and update values for the initial channel correlation matrix;
a Cholesky decomposition device configured to receive the initial channel correlation matrix and produce an initial Cholesky factor;
a forward substitution device configured to receive initial samples of the samples and the initial Cholesky factor and perform forward substitution and producing initial values of the at least one wireless communication;
a Cholesky factor update device configured to receive the update values for the initial channel correlation matrix and the initial Cholesky factor and produce values of an updated Cholesky factor;
a forward substitution update device for receiving the updated Cholesky factor and a result of the forward substitution device and produce subsequent values of the at least one communication. - View Dependent Claims (14)
-
-
15. A base station comprising:
-
means for receiving at least one wireless communication;
means for sampling the received wireless communication producing samples;
means for estimating a channel response corresponding to the at least one wireless communication;
means for producing an initial channel correlation matrix based on the received samples and the channel response;
means for factorizing the initial channel correlation matrix to produce a Cholesky factor;
means for performing forward substitution using the Cholesky factor and received samples to produce initial values for the at least one wireless communication;
means for updating the Cholesky factor using additional channel correlation matrix values producing an updated Cholesky factor; and
means for producing subsequent values for the at least one wireless communication using the updated Cholesky factor. - View Dependent Claims (16, 17, 18, 19, 20)
-
-
21. A base station comprising:
-
an antenna or antenna array for receiving at least one wireless communication;
a sampling device configured to receive the at least one wireless communication and produce samples of the at least one received wireless communication;
a channel estimation device for estimating a channel response corresponding to the at least one wireless communication;
a channel correlation computation device configured to receive the channel response and produce an initial channel correlation matrix and update values for the initial channel correlation matrix;
a Cholesky decomposition device configured to receive the initial channel correlation matrix and produce an initial Cholesky factor;
a forward substitution device configured to receive initial samples of the samples and the initial Cholesky factor and perform forward substitution and producing initial values of the at least one wireless communication;
a Cholesky factor update device configured to receive the update values for the initial channel correlation matrix and the initial Cholesky factor and produce values of an updated Cholesky factor;
a forward substitution update device for receiving the updated Cholesky factor and a result of the forward substitution device and produce subsequent values of the at least one communication. - View Dependent Claims (22)
-
-
23. An integrated circuit comprising:
-
an input configured to receive samples of at least one wireless communication;
a channel estimation device for estimating a channel response corresponding to the at least one wireless communication;
a channel correlation computation device configured to receive the channel response and produce an initial channel correlation matrix and update values for the initial channel correlation matrix;
a Cholesky decomposition device configured to receive the initial channel correlation matrix and produce an initial Cholesky factor;
a forward substitution device configured to receive initial samples of the samples and the initial Cholesky factor and perform forward substitution and producing initial values of the at least one wireless communication;
a Cholesky factor update device configured to receive the update values for the initial channel correlation matrix and the initial Cholesky factor and produce values of an updated Cholesky factor;
a forward substitution update device for receiving the updated Cholesky factor and a result of the forward substitution device and produce subsequent values of the at least one communication. - View Dependent Claims (24)
-
Specification