4results about "Error correction/detection using concatenated codes" patented technology

This application discloses a data processing method and a data processing apparatus. First data processing is performed on multiple first data streams encoded with a first FEC to obtain m second data streams. Each second data stream undergoes second FEC encoding, and each codeword after second FEC encoding includes N bits, where N = K + S, K represents the number of information bits, and S represents the number of parity bits. Second data processing is performed on each of the m second data streams to obtain m third data streams. Each third data stream includes at least one bit sequence, each bit sequence including P + W bits, where P bits in each bit sequence come from the second data streams, and W bits in each bit sequence are added alignment markers, where P = N × b. Third data processing is performed on the m third data streams to obtain Y modulation symbol streams, each modulation symbol stream being modulated, and the baud rate value of each modulation symbol stream being an integer multiple of the typical Ethernet reference clock frequency value.

An apparatus configured to apply a convolutional precoder with a time-varying polynomial to an information vector to generate a precoded vector, wherein coefficients of the time-varying polynomial are generated by a pseudo-random number generator (PRNG) using a radio network temporary identifier (RNTI) as an initialization seed, generate a polarization-adjusted convolution (PAC) codeword based on the precoded vector and transmit the PAC codeword.

Streams of data encoded by a plurality of OFEC encoders are merged and allocated among a plurality of optical subcarriers of an optical communication system having two polarization channels. Methods and apparatus are provided for performing the merging and allocating such that for each OFEC encoder of said OFEC encoder plurality, a same number of bits of encoded data is allocated to each subcarrier of the subcarrier plurality, and a same number of bits of encoded data is allocated to each of the two polarization channels.

Streams of data encoded by a plurality of OFEC encoders are merged and allocated among a plurality of optical subcarriers of an optical communication system having two polarization channels. Methods and apparatus are provided for performing the merging and allocating such that for each OFEC encoder of said OFEC encoder plurality, a same number of bits of encoded data is allocated to each subcarrier of the subcarrier plurality, and a same number of bits of encoded data is allocated to each of the two polarization channels.