基于光编/解码技术的抗截获通信系统研究 
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Anti-Interception Communication System Based on an Optical Encoding/Decoding Technology
陆军工程大学通信工程学院, 江苏 南京 210007
图 & 表
图 1. 基于OCDMA编/解码技术的抗截获通信系统的示意图
Fig. 1. Diagram of anti-interception communication system based on OCDMA encoding/decoding technology
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图 2. 可重构WH/TS编码器(0λ100λ2000000λ300λ40)的编码过程
Fig. 2. Encoding process of reconfigurable WH/TS encoder (0λ100λ2000000λ300λ40)
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图 3. 可重构WH/TS解码器(0λ400λ3000000λ200λ10)的解码过程
Fig. 3. Decoding process of reconfigurable WH/TS decoder (0λ400λ3000000λ200λ10)
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图 4. 基于光编/解码技术的抗截获通信系统的仿真框图
Fig. 4. Simulation block diagram of anti-interception communication system based on optical encoding/decoding technology
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图 5. 编解码器的仿真结构图(q=4)
Fig. 5. Simulation architecture diagram of encoder/decoder (q=4)
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图 6. 抗截获通信系统中信号的波形及眼图
Fig. 6. Waveforms and eye diagrams of signals in anti-interception communication system
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图 7. 误码率随接收光功率的变化关系曲线
Fig. 7. Relationship of the BER and the received optical power
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表 1对于q=4的情况下,部分跳频/扩时(WH/TS)序列及码字
Table1. For the case of q=4, part of wavelength-hopping/time-spreading (WH/TS) sequences and codes
| WH/TS sequence | WH/TS code of encoder | WH/TS codes of decoder |
|---|
| 00/01 10 11 01 | Primary user | 0λ100 00λ20 000λ3 0λ400 | 00λ40 λ3000 0λ200 00λ10 | | Interference user #1 | 00λ10 λ2000 00λ30 0λ400 | | Interference user #2 | 000λ1 0λ200 000λ3 00λ40 | | Interference user #3 | λ1000 0λ200 λ3000 000λ4 | | Interference user #4 | 0λ100 000λ2 0λ300 λ4000 | | 01/00 11 01 10 | Primary user | λ2000 000λ3 0λ400 0λ100 | 00λ10 00λ40 λ3000 000λ2 | | Interference user #1 | 0λ200 0λ300 λ4000 0λ100 | | Interference user #2 | 00λ20 00λ30 0λ400 00λ10 | | Interference user #3 | 000λ2 000λ3 00λ40 000λ1 | | Interference user #4 | 0λ200 00λ30 000λ4λ1000 | | 10/10 00 11 11 | Primary user | 00λ30 λ4000 000λ1 000λ2 | λ2000 λ1000 000λ4 0λ300 | | Interference user #1 | 000λ3 00λ40 00λ10 000λ2 | | Interference user #2 | λ3000 000λ4 000λ1λ2000 | | Interference user #3 | 0λ300 λ4000 λ1000 0λ200 | | Interference user #4 | 00λ30 0λ400 0λ100 00λ20 | | 11/11 10 01 10 | Primary user | 000λ4 00λ10 0λ200 00λ30 | 0λ300 00λ20 0λ100 λ4000 | | Interference user #1 | λ4000 λ1000 λ2000 00λ30 | | Interference user #2 | 0λ400 0λ100 0λ200 000λ3 | | Interference user #3 | 00λ40 00λ10 00λ20 λ3000 | | Interference user #4 | 000λ4 000λ1 000λ2 0λ300 |
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表 2具体的仿真参数
Table2. Specific simulation parameters
| Parameter | Value | Parameter | Value |
|---|
| Bit rate /(Gbit·s-1) | 2.5 | Attenuation coefficient /(dB·km-1) | 0.2 | | Input optical power /dBm | 0 | Transmission distance /km | 100 | | Wavelength range /nm | 1549.3~1550.8 | Dispersion coefficient of SMF /(ps·nm-1·km-1) | 16 | | Wavelength space /nm | 0.1 | Dispersion coefficient of DCF /(ps·nm-1·km-1) | -80 | | Gain of EDFA /dB | 20 | Responsivity of receiver /(A·W-1) | 1 | | Noise index of EDFA /dB | 4 | Spectral density of thermal noise /(10-23 W·Hz-1) | 5 |
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表 3仿真中各个用户使用的跳频/扩时(WH/TS)码
Table3. Wavelength-hopping/time-spreading(WH/TS) codes used by each user in the simulation
| User name | Wavelength-hopping/time-spreading (WH/TS) code |
|---|
| Primary user | λ1000000000000000 0λ200000000000000 00λ30000000000000 000λ4000000000000 0000λ500000000000 00000λ60000000000 000000λ7000000000 0000000λ800000000 00000000λ90000000 000000000λ10000000 0000000000λ1100000 00000000000λ120000 000000000000λ13000 0000000000000λ1400 00000000000000λ150 000000000000000λ16 | | Interference user #1 | λ1000000000000000 00λ20000000000000 0000λ300000000000 000000λ4000000000 00000000λ50000000 0000000000λ600000 000000000000λ7000 00000000000000λ80 λ9000000000000000 00λ100000000000000 0000λ1100000000000 000000λ12000000000 00000000λ130000000 0000000000λ1400000 000000000000λ15000 00000000000000λ160 | | Interference user #2 | 0000000λ100000000 000000000λ2000000 00000000000λ30000 0000000000000λ400 λ5000000000000000 00λ60000000000000 0000λ700000000000 000000λ8000000000 00000000λ90000000 0000000000λ1000000 000000000000λ11000 0000000000000λ1200 λ13000000000000000 00λ140000000000000 0000λ1500000000000 000000λ16000000000 | | Legitimate receiver | λ16000000000000000 0λ1500000000000000 00λ140000000000000 0000λ1300000000000 0000λ1200000000000 00000λ110000000000 000000λ10000000000 0000000λ900000000 00000000λ80000000 000000000λ7000000 0000000000λ600000 00000000000λ50000 000000000000λ4000 0000000000000λ300 00000000000000λ20 000000000000000λ1 | | Eavesdropper | λ11000000000000000 λ12000000000000000 λ13000000000000000 λ14000000000000000 λ15000000000000000 λ16000000000000000 λ1000000000000000 λ2000000000000000 λ3000000000000000 λ4000000000000000 λ5000000000000000 λ6000000000000000 λ7000000000000000 λ8000000000000000 λ9000000000000000 λ10000000000000000 |
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谭业腾, 蒲涛, 郑吉林, 周华, 苏国瑞. 基于光编/解码技术的抗截获通信系统研究[J]. 光学学报, 2020, 40(9): 0906001. Yeteng Tan, Tao Pu, Jilin Zheng, Hua Zhou, Guorui Su. Anti-Interception Communication System Based on an Optical Encoding/Decoding Technology[J]. Acta Optica Sinica, 2020, 40(9): 0906001.
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