Joint Space-Time Optimum Filters (JSTOF) with at Least One Antenna, at Least One Channel, and Joint Filter Weight and CIR Estimation
First Claim
Patent Images
1. A wireless communications device comprising:
- at least one virtual antenna;
a space-time filter circuit for filtering a communications signal received by said at least one virtual antenna by jointly estimating space-time filter weights and at least one channel impulse response (CIR); and
a matched filter circuit downstream from said space-time filter circuit and having a filter response that is provided by a channel impulse response estimation from said space-time filter circuit.
3 Assignments
0 Petitions
Accused Products
Abstract
A wireless communications device may include at least one virtual antenna, and a space-time filter circuit for filtering a communications signal received by the at least one virtual antenna by jointly estimating space-time filter weights and at least one channel impulse response (CIR). The wireless communications device may further include a matched filter circuit downstream from the space-time filter circuit and having a filter response that is provided by a channel impulse response estimation from the space-time filter circuit.
-
Citations
21 Claims
-
1. A wireless communications device comprising:
-
at least one virtual antenna;
a space-time filter circuit for filtering a communications signal received by said at least one virtual antenna by jointly estimating space-time filter weights and at least one channel impulse response (CIR); and
a matched filter circuit downstream from said space-time filter circuit and having a filter response that is provided by a channel impulse response estimation from said space-time filter circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A wireless communications device comprising:
-
at least one virtual antenna;
a space-time filter circuit for filtering a communications signal received by said at least one virtual antenna by jointly estimating space-time filter weights and at least one channel impulse response (CIR);
a matched filter circuit downstream from said space-time filter circuit and having a filter response that is provided by a channel impulse response estimation from said space-time filter circuit; and
an alternative filter operative when an interference level is below a predetermined threshold and comprising an alternative matched filter circuit, a cross-correlation circuit, and a switch mechanism for selectively switching the communications signal into said matched filter circuit and cross-correlation circuit. - View Dependent Claims (11, 12, 13, 14, 15, 16)
-
-
17. A method of reducing co-channel interference within a wireless communications device receiver comprising:
-
providing at least one virtual antenna;
filtering a communications signal received by the at least one virtual antenna using a space-time filter circuit by jointly estimating space-time filter weights and at least one channel impulse response (CIR); and
generating a filter response based upon a channel impulse response estimation from the space-time filter circuit using a matched filter circuit. - View Dependent Claims (18, 19, 20, 21)
-
Specification