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On type-B1 burst-error-correcting convolutional codes

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Two new classes of type-B1 burst-error-correcting convolutional codes are introduced. One of them requires a shorter length of guard space and a smaller number of shift register stages than optimum type-B2 codes used for type-B1 burst correction. Another class of codes improves the required number of shift register stages considerably when the correctable burst length is very large. In addition, these codes require a very short length of additional guard space to restore the decoder to correct operation after a decoding failure. Both classes of codes are derived in a straightforward manner and their implementations are also very simple. Thus, we can avoid type-B2 code procedures to correct type-B1 bursts. The codes derived here result in the more efficient and simply implemented type-B1 burst-correcting convolutional codes.

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Information Theory, IEEE Transactions on  (Volume:14 ,  Issue: 4 )