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Window interleaved turbo (wi-turbo) codes

A technology of interleaver and block interleaving, which is applied in the direction of encoding, code conversion, and encoding elements, and can solve the problems of impossible decoding of windows and limitations of interleaving operations

Active Publication Date: 2022-04-01
HUAWEI TECH DUESSELDORF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, extrinsic information exchange is limited due to interleaving operations, and window decoding is not possible

Method used

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  • Window interleaved turbo (wi-turbo) codes
  • Window interleaved turbo (wi-turbo) codes
  • Window interleaved turbo (wi-turbo) codes

Examples

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Embodiment Construction

[0128] The invention will be explained in detail below.

[0129] The present invention proposes an interleaver, specifically for channel coding, and is used to map the input sequence of k index input symbols to the output sequence of k index output symbols, and k is positive integersion.

[0130] The interleaver includes means for mapping an input index of an input sequence to an output sequence based on an interleaving function. For at least a portion of the input index of all K input indexes, the distance between the input index and the output index defined by the interleaving function is less than or equal to the thresholds P, K and the threshold P are positive integers.

[0131] The K input symbols of the input sequence are indexed in which the order of k input symbols in the input sequence is determined by the respective input indexes. In other words, k input symbols have the order determined by their respective input indexes. Similarly, K output symbols of the output sequenc...

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Abstract

The invention relates to an interleaver (104), in particular for a channel encoder (100), for mapping an input sequence (101) of k indexed input symbols to an output sequence (105) of k indexed output symbols , k is a positive integer comprising means for mapping input indices of the input sequence to output indices of the output sequence according to an interleaving function, wherein, for a particular subset of k input indices, the input indices defined by the interleaving function and The distance between the output indices is less than or equal to a threshold p, where p is a positive integer less than k. Such an interleaver can advantageously be used in conjunction with sliding window decoding.

Description

Technical field [0001] The present invention generally relates to the field of interleaver design, and more particularly to a interleaver and an interleaving method having a strip structure. The invention also relates to this interleaver, and using such interleaways in a communication system, for example, for channel coding and decoding. Background technique [0002] The background of the delay or delay in the communication system is described below and its relationship with the channel code. [0003] In each communication system, there is a delay or delay caused by a channel encoder or a channel decoder. Delay may have a high impact on the quality of service, QoS and Quality OfExperience, QUALITY OFEXPERIENCE, QUALITY OFEXPERIENCE, QOE. [0004] There are several reasons for this time in the communication system. The structural delay can be considered a delay, depending on the system design, without depends on the processing capabilities and memory of the transmitter or receiver...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M13/27H03M13/29H03M13/39
CPCH03M13/2739H03M13/2746H03M13/2771H03M13/2775H03M13/2957H03M13/3972
Inventor 许文欧纽尔凯·伊斯坎
Owner HUAWEI TECH DUESSELDORF
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