Adaptive PSK Modulation Scheme in the Presence of Phase Noise

Bicaïs, Simon; Doré, Jean‐Baptiste; González-Jiménez, José Luis

doi:10.1109/spawc.2018.8445933

Cited by 2 publications

(3 citation statements)

References 18 publications

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“…This leaves an open question: With regard to normalized corner frequency, when does DPSK become more robust than PSK? The closed form expressions of PSK and DPSK BER subject to M W PN have been derived in [16]. Fig.…”

Section: A Ber Analysis For Psk and Dpskmentioning

confidence: 99%

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Phase Noise Model Selection for Sub-THz Communications

Bicaïs

Doré

2019

2019 IEEE Global Communications Conference (GLOBECOM)

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To face the exponential data traffic growth, the sub-THz spectrum (100-300 GHz) is envisioned for wireless communications. However, sub-THz systems are critically impacted by the strong phase noise of high frequency oscillators. This paper discusses the appropriate choice of phase noise model for sub-THz communications. Two phase noise models are introduced and compared: one correlated, accurate but complex, and another uncorrelated, analytically simpler. The expression of the likelihood ratio enables us to propose an analytical condition to select the best of the two models for a measured oscillator spectral characteristic. Numerical simulations are performed with realistic phase noise generated according to a state-of-the-art sub-THz oscillator and show that an uncorrelated Gaussian process is appropriate to model the impact of phase noise in sub-THz systems. Eventually, the proposed results are applied to link adaptation in the presence of phase noise in order to choose the most robust scheme between a coherent and a differential modulation.

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Section: A Ber Analysis For Psk and Dpskmentioning

confidence: 99%

“…The transceiver has to discriminate between H 0 and H 1 to select the modulation. We have investigated this detection problem in [16] where a statistic of the received pilot sequence has been proposed to perform the link adaptation.…”

Section: B Adaptive Systemsmentioning

confidence: 99%

Phase Noise Model Selection for Sub-THz Communications

Bicaïs

Doré

2019

2019 IEEE Global Communications Conference (GLOBECOM)

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“…The performance analysis of the DPQAM has been pursued but exceeds the scope of this study and is to be released in a further work. Nevertheless, one may refer to our previous work [40] which assessed analytically and numerically the performance degradation due to cumulative PN for phase modulated signals.…”

Section: B Beyond Memoryless Phase Noisementioning

confidence: 99%

Design of Digital Communications for Strong Phase Noise Channels

Bicaïs

Doré

2020

IEEE Open J. Veh. Technol.

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To meet the requirements of beyond 5G networks, the significant amount of unused spectrum in sub-TeraHertz frequencies is contemplated for high-rate wireless communications. Yet, the performance of sub-TeraHertz systems is severely degraded by strong oscillator phase noise. We investigate in this paper the design of digital communications robust to phase noise. This problem is addressed in three steps: the characterization of the phase noise channel, the design of the optimum receiver, and the optimization of the modulation scheme. This paper proposes a joint performance and implementation optimization. First, we address the design of the demodulation scheme for phase noise channels and propose the polar metric, a soft-decision rule for symbol detection. It is shown that performance gains are achieved for coded and uncoded systems with valuable complexity reductions of the receiver. Second, we investigate the optimization of the modulation scheme for phase noise. We demonstrate that using a constellation defined upon a lattice in the amplitude-phase domain leads to significant performance gains and a low-complexity implementation. Thereupon, we propose the Polar-QAM scheme with efficient binary labeling and demodulation. Numerical simulation results show that the proposed modulation and demodulation schemes offer valuable solutions to achieve high-rate communications on systems strongly impaired by phase noise.

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Adaptive PSK Modulation Scheme in the Presence of Phase Noise

Cited by 2 publications

References 18 publications

Phase Noise Model Selection for Sub-THz Communications

Phase Noise Model Selection for Sub-THz Communications

Design of Digital Communications for Strong Phase Noise Channels

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