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Encoder

A decoder and data technology, applied in the decoder field, can solve the problem of large amount of data buffered by the decoder

Inactive Publication Date: 2014-06-04
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a decoder to solve the problem of a large buffer data volume of the decoder

Method used

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] In the embodiment of the present invention, the decoder used is a Turbo decoder. However, other decoders to which the embodiments of the present invention can be applied should not be limited outside the protection scope of the present invention.

[0029] See figure 1 , figure 1 is a schematic block diagram of the structure of the decoder in the first embodiment of the present invention. The decoder 10 disclosed in this embodiment inc...

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Abstract

The invention discloses an encoder which comprises at least one SISO unit, a storage unit and a data interweaving network. The encoder carries out encoding through multiple iteration processes, and each iteration process comprises primary iteration and secondary iteration. In a first system, the SISO unit directly reads first data from the storage unit during the primary iteration, second data are generated according to the first data, and the second data are written into the storage unit through the data interweaving network. The SISO unit directly reads third data from the storage unit during the secondary iteration, fourth data are generated according to the third data, and the fourth data are written into the storage unit through the data interweaving network. By means of the mode, the cache data quantity of the encoder can be reduced.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a decoder. Background technique [0002] At present, Turbo code is the main coding scheme for the data channel of the 3rd Generation Network (3G) or 4th Generation Network (4G). Due to the complexity of the algorithm and the large processing delay, Turbo decoding , requiring dedicated decoder processing. [0003] The turbo decoder in the prior art includes a soft input soft output (Soft Input Soft Output, SISO) unit, an interleaver, a deinterleaver, and a decision device. After the data is operated by the SISO unit, the gain information is extracted, and then the interleaving address or sequential address Input to the SISO unit to operate again, the process is iterative. After several iterations, the decoding gain gradually converges, and the final decoding result is determined by the decision unit. [0004] Wherein, each iteration includes the first iteration and the se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/29
Inventor 李璐
Owner HUAWEI TECH CO LTD
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