Concatenated spinal code construction method for error reduction performance

Abstract

The invention discloses a construction method of concatenated Spinal codes for reducing error performance, which mainly solves the problem of poor system transmission reliability caused by high code error performance in the prior art. The implementation scheme is as follows: 1. Select the BCH code with strong error correction ability as the outer code according to the burst error correction ability B; 2. Determine the outer code information according to the outer code parameters in the selected outer code coding scheme and the original Spinal code parameters 3. Generate the segmented check sequence p according to the encoded outer code information bit y; 4. Merge the original information bit m and the segmented check sequence p to generate the input sequence of the concatenated Spinal code; 5. Execute the concatenated Spinal code Generate channel input symbols. The invention reduces the error probability of the tail bits of the Spinal code information sequence and the error performance of the Spinal code, thereby improving the transmission reliability of the communication system, and can be used in cellular communication, satellite communication and Internet of Things systems.

Description

technical field [0001] The invention belongs to the technical field of communication, and further relates to a construction method of a cascaded Spinal code, which can be used in cellular communication, satellite communication and Internet of Things systems, and improves the transmission efficiency and reliability of the system. Background technique [0002] The traditional Spinal code first divides the information bits into segments, uses the hash function to generate the hash state corresponding to each segment of the information sequence, generates the encoded bits of each segment according to the hash state of each segment, and then generates the encoding symbols through the mapping function. For example, in "Two-Way Spinal Codes" (IEEE International Symposium on Information Theory, 2016, pp1919-1923, July 2016), Weiqiang Yang, Ying Li et al. gave a coding structure of a bidirectional Spinal code that improves the error performance of the Spinal code and transfer scheme....

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Problems solved by technology

The disadvantage of this scheme is that it can only use the channel puncturing probability to delete wrongly decoded bits under the BEC channel. In practice, most communication systems transmit data in the AWGN channel. When this scheme is applied to the AWGN channel, the decoding is complicated. too high to achieve

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