System and method for encoding, decoding, and transmitting physical layer data

A physical layer data encoding method, characterized in that:

• data is encoded with error-correcting codes;
• the data encoded by the error-correcting codes is interleaved at a granularity of 1 bit, with an interleaving depth of n;
• the interleaved data is encoded with line codes, and the line code encoding is performed in groups of m-bit binary numbers;
• both n and m are fixed positive integers, and n≥m.

A physical layer data decoding method, characterized in that:

• received data is decoded with line codes, and the data after line code decoding is in groups of m-bit binary numbers;
• the data decoded by the line codes is deinterleaved at a granularity of 1 bit, with a deinterleaving depth of n;
• the deinterleaved data is decoded with error-correcting codes;
• both n and m are fixed positive integers, and n≥m.

A physical layer data replacement method for transmitting data blocks through a transmission system;

• the transmission system comprises a first transmission terminal, a second transmission terminal, and a transmission channel, and the first transmission terminal is connected to the second transmission terminal through the transmission channel,
• characterized in that:
• the first transmission terminal encodes the data blocks with error-correcting codes to generate data blocks encoded by the error-correcting codes, interleaves the encoded data blocks at a granularity of 1 bit with an interleaving depth of n, then encodes the interleaved data with line codes in groups of m-bit binary numbers, and finally sends the symbols generated after line code encoding to the transmission channel;
• the second transmission terminal receives and decodes the symbols encoded by the line codes sent through the transmission channel, replaces the data at the preset replacement positions in the data decoded by the line codes, and re-encodes the replaced data with line codes;
• both n and m are fixed positive integers, and n≥m.