采用Raptor码的DNA信息存储技术 
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DNA Information Storage Technology Based on Raptor Code
天津大学电气自动化与信息工程学院, 天津 300072
图 & 表
图 1. DNA-Raptor码技术流程图
Fig. 1. Flow chart of DNA-Raptor code technology
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图 2. 四进制纠错编码流程
Fig. 2. Flowchart of quaternary error correction coding process
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图 3. 筛选方案的流程
Fig. 3. Screening plan process
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图 4. DNA-Raptor码的编码过程
Fig. 4. Coding process of DNA-Raptor code
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图 5. LT码与Raptor码的编解码性能。(a)度值与频数的变化曲线;(b)冗余与解码成功率的变化曲线
Fig. 5. Encoding and decoding performance of LT code and Raptor code. (a) Change curves of degree value and frequency; (b) change curves of redundancy and decoding success rate
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图 6. 两种方案的信息符号频率。(a) DNA-Raptor码;(b) DNA喷泉码
Fig. 6. Information symbol frequency of two plans. (a) DNA-Raptor code; (b) DNA fountain code
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图 7. DNA喷泉码的信息符号频率
Fig. 7. Frequency of information symbols in DNA fountain code
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表 1四进制RS纠错码结果
Table1. Results of quaternary RS error correction code
| Redundancy /% | Errorprobability /% | Error rateafter decoding /% |
|---|
| 13.33 | 0.02 | 0 | | 0.04 | 0 | | 0.10 | 0.003 | | 0.20 | 0.011 |
|
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表 2筛选方案的性能比对
Table2. Comparison of screening plan performance
| Plan | A | B |
|---|
| Coding efficiency per basic /bit | 1.46 | 1.46 | | Time /s | 0.56 | 0.61 |
|
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表 3DNA-Raptor存储框架的性能参数
Table3. Performance parameters of DNA-Raptor storage framework
| File | Inputdata /KB | Coding efficiencyper basic /bit | Time /s |
|---|
| Text | 9 | 1.463 | 0.556 | | Video | 523 | 1.501 | 127.729 | | Picture | 53 | 1.493 | 2.113 | | Average | - | 1.486 | - |
|
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表 4不同DNA信息存储方案的性能
Table4. Performance of different DNA information storage plans
| Plan | Ref. [6] | Ref. [5] | Ref. [15] | Ref. [4] | Ref. [16] | Ref. [7] | Proposed |
|---|
| Coding efficiency per basic /bit | 0.83 | 0.33 | 1.14 | 0.88 | 0.92 | 1.57 | 1.49 | | Redundancy /% | 17.00 | 79.11 | 35.96 | 44.30 | 42.50 | 20.71 | 23.52 | | Error correction | No | Repetition | RS | No | Repetition | RS | Quaternary RS | | Full recovery | No | No | Yes | No | Yes | Yes | Yes |
|
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表 5DNA-Raptor码与DNA喷泉码性能对比
Table5. Performance comparison between DNA-Raptor code and DNA fountain code
| Plan | Coding efficiencyper basic /bit | Time /s |
|---|
| DNA-Raptor | 1.46 | 0.55 | | DNA-LT | 1.54 | 0.84 |
|
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张淑芳, 彭康. 采用Raptor码的DNA信息存储技术[J]. 激光与光电子学进展, 2020, 57(15): 151701. Shufang Zhang, Kang Peng. DNA Information Storage Technology Based on Raptor Code[J]. Laser & Optoelectronics Progress, 2020, 57(15): 151701.
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