Interference canceling matched filter (ICMF) and related methods
AssigneeResearch In Motion Limited
InventorsHuan Wu, Sean Simmons, Zoltan Kemenczy
Life of this patent
Estimating the term…
Abstract
An interference cancelling matched filter (ICMF) may include an antenna array for receiving a signal burst including a training sequence therein, and an adaptive space-time filter connected to the virtual antenna array and having settable filter coefficients. The ICMF may further include a channel impulse response estimator for estimating a channel impulse response based upon the training sequence, and a signal blocker operatively connected between the channel impulse response estimator and the adaptive space-time filter so that the filter coefficients thereof are set based upon the training sequence and not the whole signal burst.
Claims29
An interference cancelling matched filter system comprising:
- an antenna array for receiving a signal burst including a training sequence therein;
- an adaptive space-time filter connected to said antenna array and having settable filter coefficients;
- a channel impulse response estimator for estimating a channel impulse response based upon the training sequence;
- and
- a signal blocker operatively connected between said channel impulse response estimator and said adaptive space-time filter so that the filter coefficients thereof are set based upon the training sequence and not the whole signal burst.
An interference cancelling matched filter system comprising:
- a virtual antenna array for receiving a signal burst including a training sequence therein;
- an adaptive space-time filter connected to said virtual antenna array and having settable filter coefficients;
- a channel impulse response estimator for estimating a channel impulse response based upon the training sequence;
- and
- a signal blocker operatively connected between said channel impulse response estimator and said adaptive space-time filter so that the filter coefficients thereof are set based upon the training sequence and not the whole signal burst;
- said signal blocker subtracting a re-modulated training sequence from corresponding received signals.
A wireless communications device comprising:
- a wireless transmitter and a wireless receiver;
- said wireless receiver comprising an interference cancelling matched filter system comprising
- an antenna array for receiving a signal burst including a training sequence therein,
- an adaptive space-time filter connected to said antenna array and having settable filter coefficients,
- a channel impulse response estimator for estimating a channel impulse response based upon the training sequence, and
- a signal blocker operatively connected between said channel impulse response estimator and said adaptive space-time filter so that the filter coefficients thereof are set based upon the training sequence and not the whole signal burst.
An interference canceling matched filtering method comprising:
- receiving a signal burst including a training sequence therein using an antenna array;
- estimating a channel impulse response based upon the training sequence;
- and
- filtering the received signal burst using an adaptive space-time filter having settable filter coefficients, and performing signal blocking on the received signal burst so that the filter coefficients of the adaptive space-time filter are set based upon the training sequence and not the whole signal burst.
Dependencies are inferred from the claim text.