Impacts of Phase Noise on Digital Self-Interference Cancellation in Full-Duplex Communications

Quan, Xin; Liu, Ying; Shao, Shihai; Huang, Chuan; Tang, Youxi

doi:10.1109/tsp.2017.2652384

Cited by 73 publications

(54 citation statements)

References 26 publications

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“…Note that the slope (in dB scale) of ICI power versus δ f in Fig. 3 for OFDM is approximately equal to the maximally decreasing slope (in dB scale) of SI cancellation gain (β) versus δ f in Figure 2 in [15] (or increasing slope in Figure 5 in [16]). From this observation, we can set up a relation that in 10 -2 dB scale, the maximum decreasing slope of β versus ICI power is equal to 1 dB/dB, i.e., the maximum reduction of β by the ICI power increase is as large as the increase of ICI power.…”

Section: B Case With the Worst (Maximum) Si Cancellation Penalty Formentioning

confidence: 87%

“…The SI at the input to digital SI cancellation stage suffers its own ICI, which degrades SI cancellation performance. In order to analyse how the ICI of SI affects the FD systems with different waveforms, we consider the oscillator phase noise (PN) that is the main limiting factor of SI cancellation [15,16].…”

Section: B Case With the Worst (Maximum) Si Cancellation Penalty Formentioning

confidence: 99%

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FD-FBMC: A Solution for Multicarrier Full Duplex Cellular Systems

Choi

2021

IEEE Commun. Lett.

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This letter reports on a critical issue with the application of OFDM to a full-duplex (FD) cellular system. With small frequency offsets of uplink signals, the downlink BER increases considerably. This is attributed to the high spectral-leakage-interference from the OFDM waveforms of geographically nearby uplink users. As an alternative, we propose applying the FBMC waveform to the same FD cellular system scenario. We calculate the precise spectral-leakage-interference for OFDM and FBMC, based on which, we set up a semianalytic BER simulation framework. Analysis and numerical results confirm that spectral leakage interference from uplink signals is the critical performance limiting factor. Even with tiny frequency offsets among the users, the performance of FD with OFDM is severely degraded. Although the FDs with the other multicarrier waveforms having lower spectral leakage such as GFDM, UFMC, and f-OFDM overcome this issue to a certain extent, the degradations remain substantial. However, the FBMC-based FD cellular system achieves almost spectralleakage-interference-free performance, and thus, it substantially outperforms the counterparts with other waveforms.

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Section: B Case With the Worst (Maximum) Si Cancellation Penalty Formentioning

confidence: 87%

Section: B Case With the Worst (Maximum) Si Cancellation Penalty Formentioning

confidence: 99%

FD-FBMC: A Solution for Multicarrier Full Duplex Cellular Systems

Choi

2021

IEEE Commun. Lett.

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“…The SI cancellation capability G is defined as the power ratio of the signal power before the SI cancellation to the signal power after the SI cancellation, when the signal of interest is absent [14], [24], [25]:…”

Section: B Performance Metricsmentioning

confidence: 99%

Self-Interference Cancellation Enabling High-Throughput Short-Reach Wireless Full-Duplex Communication

Kerrebrouck

Caytan

et al. 2018

IEEE Trans. Wireless Commun.

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In-band full-duplex (FD) wireless communication allows the simultaneous transmission and reception of data at the same frequency band, effectively doubling the spectral efficiency and data rate while reducing the latency. Previously published designs mostly target the self-interference (SI) cancellation in conventional wireless systems. In this paper, we focus on real-time SI cancellation for short-reach wireless FD systems. The superior signal quality of a point-to-point short-reach wireless system, allows the utilization of wideband communications to achieve a high throughput. Besides, in such wireless systems, the impacts of phase noise and nonlinear distortions are largely reduced, easing the SI cancellation. Moreover, the degradation of signal reception quality due to FD operation is experimentally evaluated in different environments. Experimental results of a prototype implementation show that a combination of antenna isolation and digital cancellation can already achieve an overall SI cancellation performance of 72.5 dB over a bandwidth of 123 MHz. This prototype can support a high-data-rate FD communication link of close to 1 Gbps up to 300 cm with an error vector magnitude (EVM) lower than -26 dB in a typical indoor environment.

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“…For digital cancellation techniques, the effect of transmitter and receiver power amplifier (PA) nonlinearities is analyzed in [1], [9], whereas the impact of inphase/quadrature (IQ) imbalances and resulting image components is investigated in [10]. Signal models including the phase noise of transmitter and receiver oscillators are presented in [11]. It was observed that the phase noise is a bottleneck for perfect SI cancellation while using two different oscillators for transmitter and receiver.…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Self-Interference Model for Single-Antenna Full-Duplex Communication Systems

Islam

Smida

2019

ICC 2019 - 2019 IEEE International Conference on Communications (ICC)

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Single-antenna full-duplex communication technology has the potential to substantially increase spectral efficiency. However, limited propagation domain cancellation of singleantenna system results in a higher impact of receiver chain nonlinearities on the residual self-interference (SI) signal. In this paper, we offer a comprehensive SI model for single-antenna fullduplex systems based on direct-conversion transceiver structure considering nonlinearities of all the transceiver radio frequency (RF) components, in-phase/quadrature (IQ) imbalances, phase noise effect, and receiver noise figure. To validate our model, we also propose a more appropriate digital SI cancellation approach considering receiver chain RF and baseband nonlinearities. The proposed technique employs orthogonalization of the design matrix using QR decomposition to alleviate the estimation and cancellation error. Finally, through circuit-level waveform simulation, the performance of the digital cancellation strategy is investigated, which achieves 20 dB more cancellation compared to existing methods.

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Impacts of Phase Noise on Digital Self-Interference Cancellation in Full-Duplex Communications

Cited by 73 publications

References 26 publications

FD-FBMC: A Solution for Multicarrier Full Duplex Cellular Systems

FD-FBMC: A Solution for Multicarrier Full Duplex Cellular Systems

Self-Interference Cancellation Enabling High-Throughput Short-Reach Wireless Full-Duplex Communication

A Comprehensive Self-Interference Model for Single-Antenna Full-Duplex Communication Systems

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