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Encoding/decoding device based on multi-hop concatenated convolutional code and realization method thereof

A convolutional coding and coding/decoding technology, applied in the field of coding/decoding devices based on multi-hop concatenated convolutional coding, can solve the problems of not fully utilizing the multi-hop network topology structure, complicated signal decoding and processing at the receiving end, etc. The effect of simplified implementation and good bit error rate performance

Inactive Publication Date: 2011-06-08
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

However, this method can only be aimed at the situation where the sender and the relay work together, and the transmission on each link needs to adopt a complex interleaving and cascading Turbo coding, which does not make full use of the characteristics of the multi-hop network topology. , the processing of signal decoding at the receiving end is also relatively complicated

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  • Encoding/decoding device based on multi-hop concatenated convolutional code and realization method thereof
  • Encoding/decoding device based on multi-hop concatenated convolutional code and realization method thereof
  • Encoding/decoding device based on multi-hop concatenated convolutional code and realization method thereof

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Embodiment 2

[0062] In this embodiment: the receiving end adopts a soft decoding scheme to realize; the decoding algorithm of the receiving end adopts the LogMAP algorithm to realize; the SISO decoder at the receiving end adopts an additive SISO decoding module to realize;

[0063] Such as image 3 As shown, this embodiment adopts soft decoding, and the specific process is as follows:

[0064] C1: Initialize the sub-decoders of all relay nodes;

[0065] The initialization refers to: initializing the prior likelihood value of the input data of the sub-decoder to zero.

[0066] C2: The receiving end uses the sub-decoder of the adjacent relay node that sends the multi-hop concatenated convolutional code to perform SISO decoding on the multi-hop concatenated convolutional code, and obtains the input update likelihood value, which is deinterleaved After generating the prior likelihood value.

[0067] Described SISO decoding refers to: use addition SISO decoding module to carry out decoding o...

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Abstract

The invention provides an encoding / decoding device based on a multi-hop concatenated convolutional code in the technical field of wireless communication and a realization method thereof; the device comprises a transmitting end, a receiving end and n concatenated relay nodes; wherein the receiving end comprises a hard judging device, (n+1) grades of sub-decoders and n grades of deinterleavers; andthe sub-decoders are Viterbi decoders or addition SISO (single input single output) decoding modules. By the method provided by the invention, distributed concatenated codes are formed by concatenation characteristics of multi-hop paths in an auxiliary cellular communication system in which the relay nodes are led in, so that an error level better than the error level of a single-hop mode is obtained.

Description

technical field [0001] The present invention relates to a method in the technical field of wireless communication, in particular to an encoding and decoding device based on a multi-hop concatenated convolutional code and an implementation method thereof. Background technique [0002] Traditional wireless communication systems generally use a cell-based cellular architecture. Users in each cell directly access the system through a base station. The wireless link usually uses a convolutional code with a high number of storage units, or a Turbo code based on an interleaved cascade structure as channel coding. . In recent years, the mode of adding a relay node between a base station and a user to perform multi-hop wireless communication in a traditional cellular communication system has attracted more attention from the industry. The relay node divides the long link between the base station and the user into multiple shorter links with better communication quality. Each link ha...

Claims

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Application Information

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IPC IPC(8): H04L1/00
Inventor 潘晟崔高刘涛戎蒙恬刘文江
Owner SHANGHAI JIAO TONG UNIV
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