Phase Noise Cancellation in Coherent Communication Systems Using a Radio Frequency Pilot Tone

Xu, Tianhua; Jin, Cenqin; Zhang, Shuqing; Jacobsen, Gunnar; Popov, Sergei; Leeson, Mark S.; Liu, Tiegen

doi:10.3390/app9214717

Cited by 4 publications

(3 citation statements)

References 32 publications

(44 reference statements)

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“…• Phase Noise Cancellation in Coherent Communication Systems Using a Radio Frequency Pilot Tone [3] In long-haul optical fiber communication, DSP-based (digital signal processing) dispersion compensation can be distorted by the equalization-enhanced phase noise (EEPN), due to the reciprocities between the dispersion compensation unit and the local oscillator (LO) laser phase noise (LPN). In this invited paper, the authors demonstrated a unique approach for phase noise cancellation using a radio frequency pilot tone.…”

Section: Special Issue Papersmentioning

confidence: 99%

Special Issue on Optical Communications and Networking: Prospects in Industrial Applications

et al. 2020

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Section: Special Issue Papersmentioning

confidence: 99%

Special Issue on Optical Communications and Networking: Prospects in Industrial Applications

et al. 2020

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“…The data show that this algorithm can be applied to QPSK, 16APSK and higher order communication systems. Moreover, the authors of [13] explore the impact of EEPN scale increases with the increase in the fiber dispersion, laser linewidths, symbol rates, signal bandwidths and the order of modulation formats. A 28-Gsym/s QPSK optical transmission system with a significant EEPN has been implemented.…”

Section: Introductionmentioning

confidence: 99%

Analysis on the Effect of Phase Noise on the Performance of Satellite Communication and Measurement System

Liu,

Lu,

et al. 2023

Symmetry

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An oscillator is a key component of a satellite communication measurement and control system, performing symmetry precisely as a time frequency reference. At the same time, the phase noise index has a close coupling relationship with the overall performance of the entire system, while persistently breaking the symmetry property of the oscillator during work. It is very important to study and reasonably allocate the phase noise index. According to the theoretical formula of phase noise, this paper analyzes the power law spectral model in the frequency domain and the noise jitter characteristics in the time domain. Using the carrier tracking loop in the measurement system, the frequency domain transfer model of phase noise is established, and typical analysis results are given. A discrete fractional integration algorithm is proposed, which can generate the phase noise time domain sequence under the given power law spectral model coefficients. The proposed algorithm is more realistic compared with the previous numerical calculation method, and has sufficient accuracy compared with the results of the instrument. After frequency domain conversion, the RMS deviation between the simulated noise sequence in the frequency domain and the measured single sideband power spectral density is less than 2.5 dB, indicating that the phase noise sequence can reflect the frequency domain characteristics more completely. A communication measurement simulation system is built, and a discrete sequence simulation analysis method combining frequency domain and time domain is provided, and the coupling relationship of key indicators such as phase noise, thermal noise, communication data rate, modulation method and bit error rate is synthesized. The results show that the BER of the QPSK/BPSK communication system will not be significantly reduced if the phase jitter RMS caused by the phase noise is less than 5 degrees, so 5 degrees can be used as a reference for the decomposition of the carrier SSB phase noise index. The simulation results have been successfully applied to a satellite inter-satellite link system, which has universal practical application value.

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“…Regarding this nonlinear aspect, special efforts are needed to investigate the effects of nonlinear distortion produced by RF-PAs, which include amplitude distortion, phase distortion [11], and the spread of signal constellations based on the quasi-memoryless Saleh model when passed through the additive white gaussian noise (AWGN) channel. This model was chosen because it involves the amplitude-to-amplitude (AM/AM) and amplitude-to-phase (AM/PM) conversion curves [12].…”

Section: Introductionmentioning

confidence: 99%

A Weighted Linearization Method for Highly RF-PA Nonlinear Behavior Based on the Compression Region Identification

et al. 2021

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In this paper, we present an adaptive modeling and linearization algorithm using the weighted memory polynomial model (W-MPM) implemented in a chain involving the indirect learning approach (ILA) as a linearization technique. The main aim of this paper is to offer an alternative to correcting the undesirable effect of spectral regrowth based on modeling and linearization stages, where the 1-dB compression point (P1dB) of a nonlinear device caused by memory effects within a short time is considered. The obtained accuracy is tested for a highly nonlinear behavior power amplifier (PA) properly measured using a field-programmable gate array (FPGA) system. The adaptive modeling stage shows, for the two PAs under test, performances with accuracies of −32.72 dB normalized mean square error (NMSE) using the memory polynomial model (MPM) compared with −38.03 dB NMSE using the W-MPM for the (i) 10 W gallium nitride (GaN) high-electron-mobility transistor (HEMT) radio frequency power amplifier (RF-PA) and of −44.34 dB NMSE based on the MPM and −44.90 dB NMSE using the W-MPM for (ii) a ZHL-42W+ at 2000 MHz. The modeling stage and algorithm are suitably implemented in an FPGA testbed. Furthermore, the methodology for measuring the RF-PA under test is discussed. The whole algorithm is able to adapt both stages due to the flexibility of the W-MPM model. The results prove that the W-MPM requires less coefficients compared with a static model. The error vector magnitude (EVM) is estimated for both the static and adaptive schemes, obtaining a considerable reduction in the transmitter chain. The development of an adaptive stage such as the W-MPM is ideal for digital predistortion (DPD) systems where the devices under test vary their electrical characteristics due to use or aging degradation.

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Phase Noise Cancellation in Coherent Communication Systems Using a Radio Frequency Pilot Tone

Cited by 4 publications

References 32 publications

Special Issue on Optical Communications and Networking: Prospects in Industrial Applications

Special Issue on Optical Communications and Networking: Prospects in Industrial Applications

Analysis on the Effect of Phase Noise on the Performance of Satellite Communication and Measurement System

A Weighted Linearization Method for Highly RF-PA Nonlinear Behavior Based on the Compression Region Identification

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