Throughput Analysis of CSMA With Imperfect Collision Detection in Full Duplex-Enabled WLAN

Kaneko, Megumi

doi:10.1109/lwc.2017.2708089

Cited by 11 publications

(4 citation statements)

References 12 publications

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“…In addition, cross-cutting researches such as physical-layer security [4]- [8], joint communication and sensing [9], [10], and simultaneous wireless information and power transfer (SWIPT) [11], [12] have been conducted on IBFD systems. Therefore, in the future, IBFD communication is expected to be used in various wireless communication systems such as beyond 5G systems [13]- [15], wireless local area networks [16], [17], V2V/V2X systems [18], [19], radar and communication (RadCom) systems [20], cognitive radios [21], [22], etc. IBFD systems suffer from the strong self-interference (SI) that is radiated by the near transmission antenna and received at own receiver.…”

Section: Linear 3rd Distortion 5th Distortionmentioning

confidence: 99%

Theoretical Investigation and Optimization of Power Amplifier Nonlinearity for In-Band Full-Duplex Radios

Komatsu

Miyaji

Uehara

et al. 2023

IEEE Trans. Wireless Commun.

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Although in-band full-duplex (IBFD) communication can theoretically double the spectral efficiency compared with conventional wireless communication technologies, it cannot be realized without reducing a high-power self-interference (SI) signal. Since the SI signal is affected by nonlinear distortion of radio-frequency (RF) circuits of its own terminal, cancellation systems capable of removing the nonlinear distorted SI have been actively developed. Detailed theoretical analysis based on the authors' past literature shows that for IBFD using a nonlinear self-interference canceller, the symbol error rate is improved when the power amplifier has certain distortion characteristics rather than being ideally linearized. However, it is not yet known what amplifier characteristics are best for the IBFD system. In this study, we theoretically analyze the self-interference signal to clarify the optimum amplifier characteristics for the IBFD system. An optimization problem to obtain an optimum transfer function from theoretical analysis is formulated as an Rayleigh quotient with constraints, and we introduce a numerical technique to solve the optimization problem. By numerical experiments, we show that the SI cancellation performance, signal-tointerference-distortion-plus-noise ratio (SIDNR), and amplifier's power efficiency are improved by the optimization.

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Section: Linear 3rd Distortion 5th Distortionmentioning

confidence: 99%

Theoretical Investigation and Optimization of Power Amplifier Nonlinearity for In-Band Full-Duplex Radios

Komatsu

Miyaji

Uehara

et al. 2023

IEEE Trans. Wireless Commun.

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“…They suggested using an antenna cancellation to cancel the SI. The usage of SI cancellation has been studied in various communication systems, such as device-to-device (D2D) relay communication [7] and [8], wireless local area networks (WLAN) [9] and [10], a cellular network [11] and [12], and self-backhauling systems [13]. Increasing spectral efficiency and extending wireless coverage are important in wireless radio communication.…”

Section: Si Cancellation For Full-duplex Wireless Radio Communication...mentioning

confidence: 99%

Self-Interference Cancellation Techniques for In-Band Full-Duplex Wireless Communication Systems: A Review

Naman,

Abdelkareem

2023

Iraqi Journal of Science

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In-Band Full-Duplex (IBFD) systems have the capability of simultaneously transmitting and receiving signals through the channel and require the same resources as half-duplex systems. Unfortunately, IBFD systems have self-interference (SI) issues that prevent the system from gaining double throughput with respect to half-duplex systems. Therefore, the IBFD system will be more reliable if SI is mitigated more. This contribution will look at SI cancellation in wireless radio and underwater acoustic systems. The reviewed documents cover all types of SI cancellations, including passive, analog, and digital cancellations. In a practical full-duplex system, the SI cancellation for all domains must cancel the SI below the receiver noise floor.

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“…I N-band full-duplex communications, which transmit and receive information at the same time and same frequency band, have the capability to increase the channel capacity of conventional wireless communication systems [1]. Fullduplex communication can replace the conventional halfduplex communication system, and its application to various communication systems, such as wireless local area networks (WLAN) [2], [3], device-to-device relay communications [4], [5], cellular networks [6], [7], and self-backhauling systems [8], has been studied. Self-interference is the most challenging obstacle to realize full-duplex communications, and it is important to reduce the self-interference to the thermal noise level.…”

Section: Introductionmentioning

confidence: 99%

Iterative Nonlinear Self-Interference Cancellation for In-Band Full-Duplex Wireless Communications Under Mixer Imbalance and Amplifier Nonlinearity

Komatsu

Miyaji

Uehara

2020

IEEE Trans. Wireless Commun.

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This paper presents an iterative estimation and cancellation technique for nonlinear in-band full-duplex transceivers with IQ imbalances and amplifier nonlinearities. The estimation process of the proposed scheme consists of three stages, namely, the channel response estimation, IQ imbalance estimation, and power amplifier and low-noise amplifier (LNA) nonlinearities estimation. For the estimation of the parameters and improvement of the accuracy, distortions are compensated by cancellation or inversion with the latest estimated parameters. On the one hand, the channel response is estimated on the time domain; on the other hand, the IQ imbalance and nonlinearities are estimated on the frequency domain for a more straightforward estimation and superior accuracy. In the cancellation process of the proposed scheme, the received signal is compensated with the estimated parameters of the LNA and receiver IQ imbalance before cancellation because the desired signal is received with a high-power self-interference and is distorted by the radiofrequency receiver impairments. Simulation results show that the proposed technique can achieve higher cancellation performance compared with the Hammerstein canceller when the LNA is saturated by the self-interference. Additionally, the performance of the proposed canceller converges much faster than that of the Hammerstein canceller.

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Throughput Analysis of CSMA With Imperfect Collision Detection in Full Duplex-Enabled WLAN

Cited by 11 publications

References 12 publications

Theoretical Investigation and Optimization of Power Amplifier Nonlinearity for In-Band Full-Duplex Radios

Theoretical Investigation and Optimization of Power Amplifier Nonlinearity for In-Band Full-Duplex Radios

Self-Interference Cancellation Techniques for In-Band Full-Duplex Wireless Communication Systems: A Review

Iterative Nonlinear Self-Interference Cancellation for In-Band Full-Duplex Wireless Communications Under Mixer Imbalance and Amplifier Nonlinearity

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