Limited length coding and improved energy detection for underwater photoelectric signal recovery
| Autor: | Yang Yi, Lilin Meng, Wenjiao Liu, Yunzhou Zhu, Zhuo Gao |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Computer science
Attenuation Bandwidth (signal processing) General Engineering Optical communication 02 engineering and technology 01 natural sciences Atomic and Molecular Physics and Optics 010309 optics 020210 optoelectronics & photonics 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Bit error rate Electronic engineering Underwater Transceiver Communication channel Coding (social sciences) |
| Zdroj: | Optical Engineering. 58:1 |
| ISSN: | 0091-3286 |
| Popis: | In underwater wireless optical communications (UWOC), low signal-to-noise ratio (SNR) and baseline drift problems caused by the attenuation of seawater channels and limited bandwidth of the transceiver system deteriorate the quality of the received signal and result in a higher bit error rate (BER). The transmission characteristics of underwater optical communication systems are analyzed, and a scheme combining length-limited coding and improved energy detection is proposed to improve the detection performance under low SNR and baseline drift. Experiments show that the scheme can improve the performance of the intensity-modulated direct-detection nonreturn-to-zero UWOC system. The BER performance of 3 × 10 − 4 can be achieved at SNR = 5.14 dB, which lays the foundation for long-distance UWOC. |
| Databáze: | OpenAIRE |
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