ENHANCED VSB VITERBI DECODER
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Abstract
An enhanced VSB receiver includes a tuner which tunes an RF signal and converts it into an IF signal, an IF mixer which converts the IF signal into a baseband signal, and a demodulator which demodulates the baseband signal signal into a VSB signal. The enhanced VSB receiver further includes a map recovery unit which recovers VSB map information of the VSB signal, an enhanced equalizer for compensating channel distortion of the VSB signal and outputting an equalized symbol, and an enhanced Viterbit decoder for estimating whether polarity inversion occurred during a symbol period of the equalized symbol and Viterbi-decoding the equalized symbol based on the polarity estimation.
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Citations
39 Claims
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1-27. -27. (canceled)
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28. A method for processing a digital television (DTV) broadcast signal in a broadcasting receiver, the method comprising:
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receiving, by a tuner, the DTV broadcast signal including enhanced data; decoding, by a decoder, the enhanced data included in the received DTV broadcast signal; and derandomizing, by a derandomizer, the decoded enhanced data, wherein the enhanced data results from; randomizing original enhanced data, first Reed Solomon (RS) encoding the randomized original enhanced data, convolutional encoding the first RS-encoded original enhanced data, second RS encoding the convolutional encoded original enhanced data, interleaving the second RS-encoded original enhanced data, and trellis encoding the interleaved original enhanced data. - View Dependent Claims (29, 30, 31, 32, 33)
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34. A broadcasting receiver for processing a digital television (DTV) broadcast signal, the broadcasting receiver comprising:
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a tuner for receiving the DTV broadcast signal including enhanced data; a decoder for decoding the enhanced data included in the received DTV broadcast signal; and a derandomizer for derandomizing the decoded enhanced data, wherein the enhanced data results from; randomizing original enhanced data, first Reed Solomon (RS) encoding the randomized original enhanced data, convolutional encoding the first RS-encoded original enhanced data, second RS encoding the convolutional encoded original enhanced data, interleaving the second RS-encoded original enhanced data, and trellis encoding the interleaved original enhanced data. - View Dependent Claims (35, 36, 37, 38, 39)
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Specification