A data processing method and device

Abstract

The invention discloses a signal processing method and device, comprising: obtaining the position of expected continuous error bits in the data block to be transmitted; obtaining the position of the target interleaving bit in the data block to be transmitted; wherein, the target interleaving bit is obtained by less than the preset The number of iterations of the iteration threshold can recover the bits of the information; the bits at positions where continuous error bits are expected to occur and the bits at positions where target interleaved bits are expected to be interleaved with each other. It can be seen from the embodiment of the present invention that since the target interleaved bits are interleaved to the position where the continuous error bit is expected to occur, the expected continuous error bit is interleaved to the position where the information can be easily recovered, so that the position where the continuous error bit is expected to occur Both are bits that are easy to recover information, thus simplifying the subsequent decoding process and reducing the decoding overhead.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of optical communication, and in particular, to a data processing method and device. Background technique [0002] In optical communication systems, channels can be roughly divided into three categories according to the characteristics of bit error distribution: random channels, burst channels, and mixed channels. In a random channel, the transmission errors in the receiving sequence appear randomly, and the error distribution has the characteristics of statistical independence, that is, there is no correlation or the correlation is weak, so a reasonable error correction coding method can be used according to the distribution characteristics of the error code. Resistant to independent random errors. However, in a burst channel, such as a channel of a passive optical network (Passive Optical Network, PON) system, since the upstream channel works in the burst mode, and since the optical ...

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Problems solved by technology

[0004] However, the existing interleaving technology randomly selects the positions of the interleaved bits. Therefore, the bits at the selected positions may be bits that are difficult to recover reliable information. Selecting such bits is interleaved with the expected continuous error bits, although It can disperse consecutive error bits, but makes the decoding process after deinterleaving very cumbersome

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