Researching | Performance Analysis of SCB-Spinal Code in Free-Space Optical Communication

Laser & Optoelectronics Progress, Volume. 59, Issue 23, 2320003(2022)

Performance Analysis of SCB-Spinal Code in Free-Space Optical Communication

Jing Zhang, Wenqing Li^*, Yang Cao, Xiaofeng Peng, and Fangding Du

Author Affiliations

School of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing 400054, China

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Abstract Get PDF(in Chinese)

Figures&Tables (13)

References (16)

Paper Information

Figures & Tables(13)

Fig. 1. FSO system model of SCB-Spinal codes

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Fig. 2. Encoding structure of Spinal code

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Fig. 3. Segmentation and traditional schemes

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Fig. 4. CRC scheme with 4 segments

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Fig. 5. Encoding structure of SCB-Spinal code

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Fig. 6. Decoding tree of SCB-Spinal

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Fig. 7. Complexity of different scheme in weak turbulence

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Fig. 8. Complexity of different scheme in moderate turbulence

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Fig. 9. Complexity of different scheme in strong turbulence

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Fig. 10. Rate performance of SCB-Spinal and traditional Spinal code

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Fig. 11. Bit error rate performance under different turbulence intensities and schemes

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Table 0. [in Chinese]

Table 0. [in Chinese]

Algorithm 1

1：Initialization

2：while $i = 1 \leq S - 1$ do #decoding segment by segment；

3： $D \leftarrow n - m / k S$ ；

4： for $j = 1$ to $D$ do

5： calculate $B 2^{k}$ nodes and sort them；

6： PATH $\leftarrow$ the best $B$ paths；

7： end for

8： for $z = 1$ to $B$ do

9： if CRC PASS

10： save the path

11： else

12： delete

13： end for

14： if CRC all failed

15： declare a decoding failure and feedback ACK message to the sender

16： end if

17：for $i = 1$ to $m + p / k$ do

18： calculate $B 2^{k}$ nodes and sort them；

19： calculate adjoint matrix

20： if adjoint matrix check is 0

21： return the path

22： else

23： calculate error locating polynomial $σ (x)$ and error correction

24： end if

25： if adjoint matrix check is 0

26： return the path

27： else

28： declare a decoding failure

Table 1. Simulation parameters
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Table 1. Simulation parameters
Parameter Value
Wavelength /nm 1550
Air fluctuation-distribution Gamma-Gamma
Transmission distance /km 2
Modulation BPSK
Turbulence intensity 0.2，1.6，3.5

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Jing Zhang, Wenqing Li, Yang Cao, Xiaofeng Peng, Fangding Du. Performance Analysis of SCB-Spinal Code in Free-Space Optical Communication[J]. Laser & Optoelectronics Progress, 2022, 59(23): 2320003

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Paper Information

Category: Optics in Computing

Received: Feb. 25, 2022

Accepted: Jun. 24, 2022

Published Online: Nov. 28, 2022

The Author Email: Wenqing Li (467144986@qq.com)

DOI:10.3788/LOP2022059.2320003

Topics

laser devices and laser physics

Lasers and Laser Optics

laser manufacturing

Instrumentation, Measurement and Metrology