An Adaptive Photoelectric Array Signal Processing Algorithm for Free Space Optical Communication

MA Chun-bo; SHI Jun-jie; WANG Ying; ZHANG Lei; AO Jun

doi:10.12263/DZXB.20201407

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ACTA ELECTRONICA SINICA ›› 2021, Vol. 49 ›› Issue (10) : 1908-1912. DOI: 10.12263/DZXB.20201407

OPTICAL WIRELESS COMMUNICATION AND NETWORKING TECHNOLOGY

An Adaptive Photoelectric Array Signal Processing Algorithm for Free Space Optical Communication

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The light beam flicker and jitter caused by atmospheric turbulence will cause the point spread function (PSF) on the focal plane of the optical communication receiver to randomly fluctuate and drift, causing the photodetector to fail to effectively cover the signal light field. In order to minimize the bit error rate (BER) of free space optical communication (FSO) system under the limitation of multi-mode Gaussian background light noise field and received optical signal energy efficiency, an adaptive photoelectric array signal processing algorithm suitable for intensity modulation / direct detection (IM / DD) is proposed. In this method, the combined array path method is used to calculate the system BER of different array elements, and the minimum BER is used as the criterion to optimize the received photoelectric array element sequence. The analysis and simulation results show that under the same atmospheric turbulence and background light noise conditions, compared with the existing photoelectric array processing algorithm, the new method can greatly reduce the computational complexity of the system, while the system performance loss can be almost ignored.

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free space optical communication / photoelectric array receiving / adaptive array algorithm

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MA Chun-bo , SHI Jun-jie , WANG Ying , ZHANG Lei , AO Jun. An Adaptive Photoelectric Array Signal Processing Algorithm for Free Space Optical Communication[J]. ACTA ELECTONICA SINICA, 2021, 49(10): 1908-1912. https://doi.org/10.12263/DZXB.20201407

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