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Digital Signal Processing of 400 Gbps CO-QPSK-WDM System Over Optical Wireless Channel for Carrier Phase Estimation

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Abstract

High bandwidth, low cost and small size has made Inter satellite optical wireless communication a promising and advance technology with an alternative to current microwave satellite systems. In this paper, advantages of coherent-detection quadrature phase shift keying (CO-QPSK) with DSP are investigated for the mitigation of non-linear effects. The technique of carrier phase estimation has been used to prolong the transmission range to several thousand kilometers. Further, 400 Gbps WDM-QPSK system has been analyzed for different distances with 30 dB transmitting power and 11 dB LO power. At last, system has been investigated at narrow channel spacing of 50 GHz and a brief comparison has been made with system having channel spacing of 100 GHz.

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Authors and Affiliations

  1. Department of Electronics and Communication Engineering, Chandigarh University, SAS Nagar, Punjab, India

    Amandeep Singh & Shaina Nagpal

  2. Department of Electrical Engineering, Chandigarh University, SAS Nagar, Punjab, India

    Surbhi Bakshi

  3. IKG PTU, Jalandhar, Punjab, India

    Amit Gupta

Authors
  1. Amit Gupta
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  2. Amandeep Singh
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  3. Surbhi Bakshi
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  4. Shaina Nagpal
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Correspondence to Amit Gupta.

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Gupta, A., Singh, A., Bakshi, S. et al. Digital Signal Processing of 400 Gbps CO-QPSK-WDM System Over Optical Wireless Channel for Carrier Phase Estimation. Wireless Pers Commun 99, 111–120 (2018). https://doi.org/10.1007/s11277-017-5042-1

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  • DOI: https://doi.org/10.1007/s11277-017-5042-1

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