期刊
IEEE COMMUNICATIONS LETTERS
卷 27, 期 6, 页码 1525-1529出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LCOMM.2023.3270184
关键词
Optical sensors; Optical pulses; Symbols; Optical receivers; Codes; Laser radar; Optical signal processing; Integrated sensing and communication; optical wireless communication; optical sensing
This letter proposes an integrated sensing and communication scheme based on pulse sequence sensing and pulse position modulation for free space optics. By generating a unipolar optical signal, optical wireless communication and optical sensing can adopt the intensity modulation and direct detection scheme simultaneously. The performance metrics for communication and sensing are derived theoretically and simulations demonstrate the effectiveness of the proposed method, even in multi-user scenarios. Different optical systems can adjust system parameters to enhance the future wireless network's ability.
The future wireless network is expected to provide communication and sensing abilities simultaneously, and the optical spectrum brings a promising candidate for integrated sensing and communication. In this letter, an integrated sensing and communication scheme based on pulse sequence sensing and pulse position modulation is proposed for free space optics. By generating a unipolar optical signal, optical wireless communication and optical sensing can adopt the intensity modulation and direct detection scheme simultaneously. Benefited from the nearly-ideal correlation properties of the pulse sequence, the communication receiver can detect the pulse position, and the sensing receiver can estimate the target distance. Moreover, different performance metrics of communication and sensing are derived theoretically. Simulations show that the proposed method can carry out communication and sensing simultaneously, even in the multi-user scenario. Furthermore, different optical systems can adjust system parameters to adapt to different scenarios, so that they will enhance the ability of the future wireless network.
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