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US 5,822,368 AGranted
Developing a channel impulse response by using distortion
AssigneeLucent Technologies Inc.
InventorJin-Der Wang
Life of this patent
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AssigneeLucent Technologies Inc.
InventorJin-Der Wang
Estimating the term…
A digital audio broadcasting (DAB) system includes a radio-frequency (RF) receiver that develops a characterization signal representative of a respective mobile communications channel as a precursor to estimating a channel impulse response. The latter is used to set coefficients of an equalizer of the receiver to compensate for distortion such as intersymbol interference. In generating the channel impulse response a Fast Fourier Transform (FFT) of the characterization signal is performed. The resulting FFT is then clipped such that frequency components above a predetermined upper threshold and less than a predetermined lower threshold are set to the respective threshold values. This allows coefficients for the equalizer to be generated such that the equalizer converges even in the presence of strong reflections in a mobile communications environment.
Apparatus for use in a communications receiver, the apparatus comprising:
A method for use in a receiver, the method comprising the steps of:
A method for use in a receiver comprising the steps:
Dependencies are inferred from the claim text.