Data interleaving method and device

Abstract

The invention provides a data interleaving method and a data interleaving device, capable of improving the demodulation performance. The method comprises: acquiring original information source data bytransmitting end equipment, wherein the information source data comprises K bit groups; copying the information source data for N times to obtain N+1 information source data; interleaving the N+1 information source data, wherein the assignment order of the K bit groups in the interleaved first information source data is different from that of the K bit groups in the interleaved second informationsource data, the assignment order of the interleaved coding bits of the ith bit group in the first information source data is at least partially different from that of the interleaved coding bits ofthe ith bit group in the second information source data, and the ith bit group in the first information source data and the ith bit group in the second information source data both are bit groups determined according to the assignment order of the K bit groups before interleaving; and transmitting the interleaved N+1 information source data.

Description

technical field [0001] The present application relates to the field of communication, and more specifically, to a data interleaving method and device. Background technique [0002] Orthogonal Frequency Division Multiplexing (OFDM) is an important technology used to realize multi-carrier transmission. OFDM divides the channel into several orthogonal sub-channels. The spectral peak of each carrier and the spectral zero of adjacent carriers Overlap, which can reduce inter-carrier interference and obtain higher bandwidth utilization. [0003] In the process of data transmission, the channel-coded data (or coded bits) are usually subjected to diversity and interleaving before OFDM modulation. That is, the received multiple original encoded bits are divided into multiple bit groups according to the original arrangement order, or in other words, the multiple original encoded bits are put into multiple bit groups according to the original arrangement order, and each bit A group co...

AI Technical Summary

Problems solved by technology

However, this interleaving process still cannot avoid the regular interference brought by power harmonics in the power line communication channel to data transmission, thus affecting the demodulation performance

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