burst correction in a sentence

1. There is more than one upper bound on the achievable code rate of linear block codes for multiple phased-burst correction ( MPBC ).
2. This bound, when reduced to the special case of a bound for single burst correction, is the Abramson bound ( a corollary of the Hamming bound for burst-error correction ) when the cyclic burst length is less than half the block length.
3. It's difficult to find burst correction in a sentence.