Data processing method and data processing apparatus

A data processing apparatus, comprising a block interleaver and a convolution interleaver, wherein

• the block interleaver is configured to perform block interleaving on every t lane data streams of n lane data streams to obtain s first data streams, so as to obtain a total of m first data streams, wherein n=q*t, m=q*s, n is an integer greater than 1, n is exactly divided by q, q is an integer greater than or equal to 1, t is an integer greater than or equal to 1, s is an integer greater than or equal to 1, first forward error correction (FEC) encoding is performed on all the n lane data streams, every a codewords obtained through the first FEC encoding are distributed in b lane data streams, a≤b≤n, n is exactly divided by b, a is an integer greater than or equal to 1, every a consecutive symbols in each lane data stream are from a different codewords, every L1 consecutive symbols in each lane data stream are from at least a different codewords, L1=N*a/b, N represents a length of the codeword, the t lane data streams comprise a total of t*a symbols with a consecutive symbols in each lane data stream, the t*a symbols comprise a total of D bits with Δ bits in each symbol, and D=Δ*t*a, the D bits are consecutive in any one of the s first data streams, Δ=M/s, and M represents a quantity of bits comprised in one symbol;
• and
• the convolution interleaver is configured to perform convolutional interleaving on the m first data streams separately to obtain m second data streams.

A non-transitory computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions;

• and the computer-executable instructions are run on one or more processors to perform operations comprising:
• performing block interleaving on every t lane data streams of n lane data streams to obtain s first data streams, so as to obtain a total of m first data streams, wherein n=q*t, m=q*s, n is an integer greater than 1, n is exactly divided by q, q is an integer greater than or equal to 1, t is an integer greater than or equal to 1, s is an integer greater than or equal to 1, first forward error correction (FEC) encoding is performed on all the n lane data streams, every a codewords obtained through the first FEC encoding are distributed in b lane data streams, a≤b≤n, n is exactly divided by b, a is an integer greater than or equal to 1, every a consecutive symbols in each lane data stream are from a different codewords, every L1 consecutive symbols in each lane data stream are from at least a different codewords, L1=N*a/b, N represents a length of the codeword, the t lane data streams comprise a total of t*a symbols with a consecutive symbols in each lane data stream, the t*a symbols comprise a total of D bits with Δ bits in each symbol, and D=Δ*t*a, the D bits are consecutive in any one of the s first data streams, Δ=M/s, and M represents a quantity of bits comprised in one symbol;
• and
• performing convolutional interleaving on the m first data streams separately to obtain m second data streams.