An investigation is conducted of the high-rate punctured convolutional codes suitable for
Viterbi and sequential decoding. Results on known short-memory codes M less than or
equal to 8 discovered by others are extended. Weight spectra and upper bounds on the bit
error probability of the best known punctured codes having memory M betweem 2 amd 8,
and coding rates R between 2/3 ande 7/8 are provided. Newly discovered rate-2/3 and-3/4
long-memory punctured convolutional codes with M between 9 and 23 are provided …