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Turbo code decoder device with variable length

A decoder and a variable technology, applied in the field of turbo code decoders, can solve problems such as lack of versatility, achieve strong practicability, wide application value, and solve the effect of excessive resource occupation

Pending Publication Date: 2021-12-31
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The hardware design of the traditional turbo code decoder is based on the simulation results to select a single parameter for solidification design. When the index changes, the program needs to be greatly modified and reconfigured, or even the system solution needs to be replaced, which lacks versatility

Method used

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  • Turbo code decoder device with variable length
  • Turbo code decoder device with variable length
  • Turbo code decoder device with variable length

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Embodiment Construction

[0028] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] like Figure 1-3 As shown, a variable-length Turbo code decoder device includes a variable-length interleaver module, a controller, a SISO component decoder module, and a data storage module. The data storage module in this example adopts RAM; wherein,

[0030] After the turbo code decoder device receives a frame of data to be decoded, it stores the data in RAM; the controller sends out the start flag, starts the variable-length interleaver module, and after completing the interleaving operation according to different data lengths, maps the The pattern is written into the RAM for storage; after the interleaving address is generated, the controller sends the first frame data decoding start flag, and controls the SISO component decoder module to start iterative decoding. The SISO component decoder modu...

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Abstract

The invention discloses a Turbo code decoder device with variable length, and belongs to the field of Turbo code decoders. The device comprises a variable-length interleaver module, a controller, an SISO component decoder module and a data storage module, can be used for setting the length of an input data frame by a user according to different index requirements of a system on information reliability and data real-time performance, can adapt to different application scenes, and has wide application value.

Description

technical field [0001] The invention relates to the technical field of Turbo code decoders, in particular to a variable-length Turbo code decoder device. Background technique [0002] Turbo codes were proposed by C. Berrou and Alain Glavieux in 1993. Due to their excellent performance approaching the limit value of Shannon theory, they have been widely used in communication systems. Turbo codes are a kind of parallel concatenated convolutional codes, which combine component codes and random interleavers, adopt a parallel concatenated structure, and realize the idea of ​​random coding. Turbo decoding adopts the iterative decoding idea of ​​soft input and soft output, and achieves a performance close to the limit of Shannon's theory. [0003] The principle of the common Turbo code decoder is as follows: figure 1 As shown, it consists of two soft-input soft-output (SISO) component decoders DEC1 and DEC2 serially cascaded, and the interleaver used in the decoder must be the sa...

Claims

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Application Information

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IPC IPC(8): H03M13/27H03M13/29
CPCH03M13/2771H03M13/296H03M13/2978
Inventor 杨丽云张亚林方真
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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