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Symbol interlacing method, apparatus and terminal equipment

A symbol interleaving and symbol group technology, applied in the field of interleaving technology, can solve the problems of poor randomization effect of interference, collision of physical resources, inability to effectively reduce the impact of interference system performance, etc., to simplify generation, reduce the impact of system performance, The effect of improving the effect

Active Publication Date: 2012-04-04
HUAWEI TECH CO LTD
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Problems solved by technology

[0018] It can be seen that although the existing symbol interleaving technology performs symbol group interleaving and cyclic shifting, the physical resources mapped by the CEs of different cells will still completely collide, and the effect of interference randomization is not good, so that it cannot effectively reduce the impact of inter-cell interference on the system. performance impact

Method used

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  • Symbol interlacing method, apparatus and terminal equipment
  • Symbol interlacing method, apparatus and terminal equipment
  • Symbol interlacing method, apparatus and terminal equipment

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Embodiment Construction

[0051] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0052] In the embodiments of the present invention, a sequence is defined, and for the convenience of description in this embodiment, the sequence is denoted as S(i). The different element values ​​in the sequence S(i) correspond to different element groups respectively, and the multiple elements in S(i) with the same element value are replaced with the element values ​​included in the corresponding element group, and the replacement The sequence of element values ​​is used as a symbol interleaving sequence.

[0053] In this way, if each of the above element groups corresponds to a CE, it can be guaranteed that the CE is directly related to the characteristics of the sequence S(i), which can be regarded as a sequence interleaved with the CE. Therefore, ...

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Abstract

The invention discloses a symbol interleaving method and a symbol interleaving device. A symbol interleaving sequence is generated through the transformation of a sequence S(i). Because the numerical value in the sequence S(i) is corresponding to the serial number of a CE, the symbol interleaving sequence generated through the sequence S(i) can effectively ensure that different cells enable less amount of symbol set in one CE to be mapped to an identical physical resource position, the effect of the interference randomization between the cells can be improved, and the influence of the interference between the cells to the system performance can be reduced. The symbol interleaving sequence can be also obtained by using a Costas sequence, and similarly, the symbol interleaving sequence can ensure that the different cells enable less amount of the symbol set in one CE to be mapped to the identical physical resource position more effectively, so that the effect of the interference randomization between the cells can be improved, the influence of the interference between the cells to the system performance can be reduced, and the generation of the symbol interleaving sequence is also simplified.

Description

technical field [0001] The invention relates to the communication field, in particular to the interweaving technology in the communication system. Background technique [0002] In a mobile communication system, in order to discretize bit errors during signal transmission, signals are usually interleaved. [0003] Taking an Orthogonal Frequency Division Multiplexing (OFDM) system as an example, in each cell, after encoding, bit interleaving, and modulation of the information bit packets to be transmitted in sequence, multiple modulation symbols are obtained, and then Group the obtained multiple modulation symbols to obtain multiple symbol groups; assign the obtained multiple symbol groups to multiple channels, for example, each channel corresponds to one or more channel elements (Channel Element, CE), then you can Multiple symbol groups are evenly allocated to multiple CEs corresponding to different channels, and symbol interleaving is performed on the multiple symbol groups...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L5/00
CPCH04L5/0044H04L1/0071H04L5/0007H04L5/0066
Inventor 马蒂尔斯·温斯特姆步兰尼斯夫·波波维奇李洋
Owner HUAWEI TECH CO LTD
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