The embodiment of the invention discloses a
data processing method and a related device, which are used for realizing inner code coding with higher
gain, improving the performance of
cascade coding and being beneficial to being applied to a 1.6 T ZR scene. Specifically, a coded data frame subjected to outer code coding is obtained, the coded data frame comprises v bits, and v is an integer greater than 1. Afterwards, a first bit set is obtained according to the coded data frame and the added dpad filling bits, the number of bits in the first bit set is v + dpad, and dpad is an integer greater than or equal to 1; next, performing convolutional
interleaving on the first bit set to obtain a second bit set; and further, performing inner code coding on the second bit set to obtain a third bit set. The third bit set comprises R code words coded by the second FEC, each
code word comprises N bits including K information bits and N-K check bits, R, N and K are all integers greater than 1, v + dpad = R * K, and dpad cannot be exactly divided by K.