Data processing method and device

Abstract

The invention discloses a signal processing method and device. The method comprises the following steps: acquiring a position where continuous error bits are expected to appear in a to-be-transmitteddata block; obtaining the position of a target interleaving bit in the to-be-transmitted data block, wherein the target interleaving bits are bits capable of recovering information through iteration times smaller than a preset iteration threshold value; interleaving the bits at the location where the consecutive error bits are expected to appear and the bits at the location where the target interleaved bits with each other. According to the embodiment of the invention, the target interleaving bits are interleaved to the positions where continuous error bits are expected to appear; the expectedcontinuous error bits are interleaved to the positions where the bits of the information are easy to recover, so that the positions where the continuous error bits are expected to appear are the bitswhere the information is easy to recover, the subsequent decoding process is simplified, and the decoding expenditure is reduced.

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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