Equalization system for AM compatible digital receiver

Details Equalization system for AM compatible digital receiver Equalization system for AM compatible digital receiver

1995-01-23

1996-09-24

Chin, Wellington

Pulse or digital communications

Equalizers

Automatic

375232, H03H 730

Patent

active

055598307

ABSTRACT:
An equalizer is provided for enhancing the recoverability of digital audio broadcasting signal information. The equalizer receives the AM compatible digital audio broadcasting waveform and stores that waveform as a waveform vector. The equalizer then processes that waveform by multiplying the waveform vector by an equalization vector. This equalization vector comprises a plurality of equalizer coefficients, each of the coefficients initially set to a predetermined value. The equalizer then compares each location of the processed waveform vector with a stored waveform vector. The equalizer selects as the signal that vector location closest to the stored waveform vector. Preferably, the equalizer includes means for updating the equalizer coefficients using the waveform vector, the processed waveform vector, and the stored waveform vector to provide immunity to noise.

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