Data interleaving method and device

A data and deinterleaving technology, applied in the field of field communication, to improve demodulation performance, facilitate error correction and data recovery

Inactive Publication Date: 2018-11-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this interleaving process still cannot avoid the regular interference brought by power harmonics

Method used

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  • Data interleaving method and device
  • Data interleaving method and device
  • Data interleaving method and device

Examples

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Example Embodiment

[0079] The technical solution in this application will be described below in conjunction with the drawings.

[0080] To facilitate the understanding of the embodiments of the present invention, first combine figure 1 The scenarios of the method and device for data transmission in the embodiments of the present invention are described. figure 1 It is a schematic diagram of a scene of the method and device for data transmission applicable to the embodiment of the present invention. specifically, figure 1 Shows the data processing process before the data is transmitted through the OFDM symbol. Such as figure 1 As shown, after the data from the upper layer is channel coded, coded bits are obtained. As data is transmitted through the channel, it may suffer from channel interference, fading and other long burst errors. In order to solve the problem of string bit errors, the channel-encoded bits are interleaved to make consecutive bits Be scattered. Even if a series of errors occur du...

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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...

Claims

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Application Information

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IPC IPC(8): H04L1/00
CPCH04L1/0014H04L1/0071
Inventor 孙瑜陈金雷胡宇鹏
Owner HUAWEI TECH CO LTD
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