LT Codes with Limited Feedback

Jia, Dongli; Fei, Zesong; Chenglin, Shangguan; Cao, Chen; Kuang, Jingming

doi:10.1109/cit.2014.73

Cited by 7 publications

(1 citation statement)

References 12 publications

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“…The decoding overhead was reduced through adjusted degree function according to the ripples in [9, 10] proposed an improved LT codes by employing only a single feedback message. In [11], redundancy could be reduced at the receiver end after informing the transmitter the most useful symbols by several acknowledgement bits. Talari and Rahnavard [12] proposed an LT codes using alternating feedback codes and its performance were improved for short‐block lengths.…”

Section: Introductionmentioning

confidence: 99%

Improved shifted robust soliton distribution

Niu

Chen³

et al. 2016

IET Communications

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Section: Introductionmentioning

confidence: 99%

Improved shifted robust soliton distribution

Niu

Chen³

et al. 2016

IET Communications

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Research of LT Code Based on Key Information Feedback in Deep Space Communication

et al. 2020

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CCSDS LDPC code cannot effectively solve the problems of communication interruptions and high communication error rates in deep space communication. An application scheme of digital fountain code for deep space communication is thoroughly studied in this paper. First, an improved joint coding and decoding algorithm for LT code is proposed by adjusting the probability of the source symbol selection to achieve a nonuniform selection coding algorithm and by introducing the idea of real-time decoding on the basis of combining the BP and GE decoding algorithms to disperse the decoding complexity. Second, to ensure that the LT code can be reliably transmitted under different channel conditions, a feedback information extraction method and a retransmission coding method are designed, and an LT code transmission scheme based on key information feedback is proposed. Finally, the concatenation of the LDPC code with the LT code based on key information feedback is proposed. The LDPC code processing can be equivalently run on deep-space channels as erasure channels so that the advantage of the LT code being rateless can still be exploited in deep-space communication. Through simulation experiments, the performance of the cascade codes is analyzed from the two aspects of decoding efficiency and decoding overhead, and the performance of the cascade codes and CCSDS LDPC codes are compared from the perspective of the bit error rate. Simulation results show that the decoding efficiency of the cascade code increases, the decoding overhead decreases, and the communication bit error rate is lower in deep space communication compared with the CCSDS LDPC code. Therefore, the cascade code can improve the reliability of deep space communication.

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Zigzag Decodable Online Fountain Codes With High Intermediate Symbol Recovery Rates

Shi

Wang

et al. 2020

IEEE Trans. Commun.

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LT Codes with Limited Feedback

Cited by 7 publications

References 12 publications

Improved shifted robust soliton distribution

Improved shifted robust soliton distribution

Research of LT Code Based on Key Information Feedback in Deep Space Communication

Zigzag Decodable Online Fountain Codes With High Intermediate Symbol Recovery Rates

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