Linearized Photonic-assisted Self-interference Cancellation for In-band Full-duplex Systems

Yu CHEN; Taixia SHI; Yang CHEN

doi:10.3788/gzxb20215010.1006002

Acta Photonica Sinica, Volume. 50, Issue 10, 1006002(2021)

Linearized Photonic-assisted Self-interference Cancellation for In-band Full-duplex Systems

Yu CHEN... Taixia SHI and Yang CHEN* |Show fewer author(s)

Shanghai Key Laboratory of Multidimensional Information Processing，School of Communication and Electronic Engineering，East China Normal University，Shanghai 200241，China

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Fig. 1. Schematic diagram of the linearized photonic-assisted self-interference cancellation

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Fig. 2. The DSP flow chart

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Fig. 3. The electrical spectra of the output signals from the system under ideal conditions

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Fig. 4. The electrical spectra of the output signals from the system under non-ideal conditions

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Fig. 5. The SICD as functions of Δp andΔτ

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Fig. 6. The electrical spectra of the output signals from the system under different power mismatch conditions

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Fig. 7. The EVM as functions of Δv and Δt

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Fig. 8. The SFDR of the system with and without linearization

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Fig. 9. The electrical spectra of output signals from the system with and without linearization

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Fig. 10. The electrical spectra of the output signals from the system with and without self-interference cancellation and linearization

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Table 1. DSP parameter values
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Table 1. DSP parameter values
Signal $E_{1} (t) = A \{1 + c o s [β x (t)]\}$ $E_{2} (t) = B \{1 + s i n [β x (t)]\}$
DC（signal） $D_{1} = A [1 + J_{0} (β)]$ $D_{2} = B$
DC²（signal） $D_{1}^{2} = A^{2} [1 + 2 J_{0} (β) + J_{0}^{2} (β)]$ $D_{2}^{2} = B^{2}$
DC（siganl²） $D_{3} = A^{2} [\frac{3}{2} + 2 J_{0} (β) + \frac{1}{2} J_{0} (2 β)]$ $D_{4} = B^{2} [\frac{3}{2} - \frac{1}{2} J_{0} (2 β)]$

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Yu CHEN, Taixia SHI, Yang CHEN. Linearized Photonic-assisted Self-interference Cancellation for In-band Full-duplex Systems[J]. Acta Photonica Sinica, 2021, 50(10): 1006002

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