Method and apparatus for canceling co-channel interference
AssigneeSamsung Electronics Co., Ltd.
InventorMyeong-hwan Lee
Life of this patent
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Abstract
A co-channel interference canceler and a method therefor. The co-channel interference canceler includes: an NTSC interference rejection filter (NRF) for removing co-channel interference from an input signal; a noise reducer for reducing noise by removing interference other than co-channel interference from the input signal; and a selection controller for determining whether or not co-channel interference exists in the signal output from the noise-reducer and selecting the NRF when such co-channel interference exists in the noise reduced signal. Therefore, the effect from interference other than the co-channel interference is minimized, so that the co-channel interference controller is reliably controlled.
Claims20
A co-channel interference canceler comprising:
- a first NTSC interference rejection filter (NRF) for removing co-channel interference from an input signal;
- a noise reducer for reducing noise by removing interference other than co-channel interference from the input signal;
- and
- a selection controller for determining whether or not co-channel interference exists in an output signal from the noise reducer and for generating a selection signal for selecting the first NRF as an input for the noise reducer when co-channel interference exists in the output signal.
A co-channel interference canceler comprising:
- a first NTSC interference rejection filter (NRF) for outputting a second input signal by removing co-channel interference from a first input signal, said first input signal including co-channel interference and other interference;
- a selector for selecting either the first input signal or the second input signal according to a selection signal and for outputting the selected signal;
- a post processor for removing the other interference from the selected signal and for outputting a post-processed signal;
- and
- a selection controller for generating the selection signal by determining whether or not the post-processed signal contains co-channel interference.
A method for canceling co-channel interference, comprising the steps of:
- (a) outputting a noise reduced signal by removing interference other than co-channel interference from an input signal;
- (b) determining whether or not the noise reduced signal contains co-channel interference and generating a selection signal based on the result of the determination;
- and
- (c) removing co-channel interference from the input signal according to the selection signal.
A method for canceling co-channel interference, comprising the steps of:
- (a) outputting a second input signal by performing an NRF process on a first input signal, said first input signal including co-channel interference and other interference;
- (b) selecting either the first input signal or the second input signal according to a selection signal, and outputting the selected signal;
- (c) outputting a post-processed signal by removing the other interference from the selected signal;
- and
- (d) generating the selection signal by determining whether or not the post-processed signal contains co-channel interference.
Dependencies are inferred from the claim text.