CKF Phase Noise Compensation Algorithm of Block Lagrangian Interpolation for CO-OFDM Systems

Jianguo Yuan; Yangxu Li; Zhihang Zuo

doi:10.3788/AOS202242.1606003

Acta Optica Sinica, Volume. 42, Issue 16, 1606003(2022)

CKF Phase Noise Compensation Algorithm of Block Lagrangian Interpolation for CO-OFDM Systems

Jianguo Yuan^*, Yangxu Li, and Zhihang Zuo

Chongqing Key Laboratory of Photoelectronic Information Sensing and Transmitting Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

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Fig. 1. Block diagram of proposed BSSLI-CKF phase noise compensation algorithm

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Fig. 2. Constellation diagrams of different compensation stages with linewidth of 800 kHz. (a) Without compensation; (b) with SLI algorithm; (c) with BSSLI algorithm; (d) with BSSLI-CKF algorithm

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Fig. 3. BER varying with laser linewidth of several phase noise compensation algorithms under different QAMs

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Fig. 4. BER varying with SNR of several phase noise compensation algorithms when laser linewidth is 800 kHz. (a) 16QAM; (b) 32QAM

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Fig. 5. BER varying with laser linewidth of several phase noise compensation algorithms under different QAMs. (a) 16QAM; (b) 32QAM

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Table 1. Complexity of BSSLI-CKF algorithm
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Table 1. Complexity of BSSLI-CKF algorithm
Method SLI in coarse phase noise compensation BSSLI in fine phase noise compensation CKF FFT/IFFT
Complexity of BSSLI-CKF algorithm $O (2 N_{p} + 4 N)$ $O (3 N + 3 N_{b} \cdot N)$ $O (N l o g_{2} N + 20 N)$ $O (4 N l o g_{2} N)$

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Jianguo Yuan, Yangxu Li, Zhihang Zuo. CKF Phase Noise Compensation Algorithm of Block Lagrangian Interpolation for CO-OFDM Systems[J]. Acta Optica Sinica, 2022, 42(16): 1606003

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