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Signaling code encoding method applied to broadcast communication system and corresponding decoding method

A technology of broadcast communication and encoding method, which is applied in the direction of transmission system, digital transmission system, forward error control, etc. It can solve the problems of no explanation or report found, no data collected, etc., and achieve the effect of improving the anti-noise performance

Active Publication Date: 2018-06-01
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, there is no description or report of the similar technology of the present invention, and no similar data at home and abroad have been collected yet.

Method used

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  • Signaling code encoding method applied to broadcast communication system and corresponding decoding method
  • Signaling code encoding method applied to broadcast communication system and corresponding decoding method
  • Signaling code encoding method applied to broadcast communication system and corresponding decoding method

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Embodiment 1

[0047] This embodiment provides a signaling code coding method applied to a broadcast communication system, including the following steps:

[0048] Step S1: divide the codeword to be encoded into a constant variable part and an inconstant variable part;

[0049] Step S2:

[0050] Perform CRC encoding on the constant variable part to obtain the CRC check digit 1, and splicing the check digit 1 to the constant variable part to obtain the information bit constant variable part;

[0051] Carry out CRC encoding on the invariant part to obtain the CRC check digit 2, and splicing the check digit 2 into the inconstant part to obtain the infrequent information bit part;

[0052] Step S3: Put the constant variable part of the information bit and the non-constant variable part of the information bit at the corresponding positions in the information bit of the signaling code;

[0053] Step S4: performing LDPC encoding and interleaving on the information bits;

[0054] Step S5: Intercep...

Embodiment 2

[0080] Embodiment 2 This embodiment provides a decoding method corresponding to the signaling code encoding method in Embodiment 1, including the following steps:

[0081] Step A1: filling the truncated bits with zeros;

[0082] Step A2: performing deinterleaving and LDPC decoding on the received soft value information;

[0083] Step A3: judge whether the CRC check bit 1 and CRC check bit 2 are passed, if the CRC check bit 2 is not passed, proceed to step A4, and at the same time, regardless of whether the CRC check bit 1 is passed, the decoding failure flag is output; if CRC check bit 2 is passed, proceed to step A6, if CRC check bit 1 is not passed at this moment, output decoding unsuccessful sign, if CRC check bit 1 passes, the decoding code word is output;

[0084] Step A4: Keep the soft value information of the bits corresponding to the invariant part of the information bit and the parity bits related only to the inconstant part of the information bit, clear the soft val...

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Abstract

The invention provides a signaling code encoding method applied to a broadcast communication system and a corresponding decoding method. Used code words for signaling code encoding are LDPC code wordswhich have a code length of N and an information bit length of K and are of a raptor-like structure. Generally, when noise exceeds a threshold that the code words can be decoded, a signaling code ina system completely cannot normally work and the system can be in a non-working state, but according to the signaling code encoding method applied to the broadcast communication system and the corresponding decoding method which are provided by the invention, when the noise exceeds the threshold that the code words can be decoded, superposition decoding is started up, after superposition encodingis successful in decoding, constantly changeable bits are decoded according to inconstantly changeable bits, and finally, all the word codes can be successfully decoded. A case that the system cannotnormally work when receiving the first several frames of data can be caused, but after sufficient frames, the system can normally work, so that noise resistance performance of the system is greatly improved.

Description

technical field [0001] The present invention relates to the technical field of communication coding, in particular, to a signaling code coding method applied to a broadcast communication system and a corresponding decoding method. Background technique [0002] With the continuous development of broadcast system applications, the current design of physical layer signals needs to meet different application requirements, such as adapting to different terminals and providing video services of various qualities. Therefore, signaling information needs to be added before the data information to indicate the parameter configuration of the receiver. The signaling signal generally consists of two parts. One is the P1 signal similar to DVB-T2 or the Bootstrap signal of ATSC3.0. On the one hand, this type of signal is used for time-frequency synchronization and signal detection; signaling transmission. The signal is characterized by extremely strong robustness, so the signaling inform...

Claims

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Application Information

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IPC IPC(8): H04L1/00
CPCH04L1/004H04L1/0056H04L1/0071
Inventor 张文军张根宁王延峰何大治徐胤刘宜璠钱程熊帅赵康
Owner SHANGHAI JIAO TONG UNIV
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