Full‐duplex Radios

Vannithamby, Rath; Talwar, Shilpa

doi:10.1002/9781118979846.ch16

Cited by 172 publications

(398 citation statements)

References 11 publications

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“…However, recent technological advances in antenna design and radio frequency interference cancellation techniques can reduce self-interference by up to 110 dB [1]. Similar studies have also been conducted regarding the physical layer by [2][3][4]. The latest technologies for self-interference cancellation allow us to transmit and receive signals simultaneously using the same frequency, which is known as in-band full-duplex (IBFD) communication [5].…”

Section: Introductionmentioning

confidence: 90%

“…IBFD is one of the techniques with the greatest potential for supporting the huge traffic demands in the near future, and researchers are attracted to IBFD because it can increase the spectral efficiency without requiring any additional frequency resources [5]. IBFD can also double the ergodic capacity of a multiple-input multiple-output system [1,3].…”

Section: Introductionmentioning

confidence: 99%

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In-band full-duplex medium access control design for heterogeneous wireless LAN

Alim

Kobayashi

Saruwatari

et al. 2017

J Wireless Com Network

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Full-duplex (FD) wireless communication is evolving into a practical technique, and many studies are being conducting in this area, especially regarding the physical layer. However, to exploit FD benefit successfully, efficient medium access control (MAC) protocols are crucial as well as physical layer advances. Numerous FD-MAC protocols have been proposed, but these MAC protocols cannot address all the issues encountered in this area. In addition, many half-duplex (HD) capable devices are present in existing wireless local area networks (WLANs), so there is an urgent need to integrate FD clients and HD clients in the same WLAN. We refer to this type of WLAN as a heterogeneous WLAN (Het-WLAN). In this paper, we propose an FD-MAC for Het-WLAN, which considers all possible types of FD transmissions. Our proposed FD-MAC protocol suppresses inter-user interference. Simulation results demonstrated that a significant throughput gain (about 96%) could be achieved by using our proposed FD-MAC compared with traditional HD communications. Moreover, our proposed MAC obtained better performance (average throughput gain of about 11%) compared with another existing FD-MAC design. In addition, probability analysis suggested that the total probability of FD transmissions increased rapidly as the WLAN approached saturation conditions.

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Section: Introductionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

In-band full-duplex medium access control design for heterogeneous wireless LAN

Alim

Kobayashi

Saruwatari

et al. 2017

J Wireless Com Network

View full text Add to dashboard Cite

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“…the transmit antennas and receive antennas must be placed on each other's perpendicular bisector, which makes it unscalable for practical implementation. In [19], it propose a improved mechanism based on [6] to achieve a 3 Â 3 MIMO communications in practical. Some cascade dynamic cancellation circuits are utilized to cancel the cross antenna self-interference.…”

Section: Self-interference: Components and Existing Cancellation Schemesmentioning

confidence: 99%

“…So far two mechanisms [17][18][19] has been proposed to achieve full duplex MIMO communications. In [17,18], a so-called two-level antenna cancellation scheme through antenna placement is proposed, which provides about 45 dB cancellation in an open environment.…”

Section: Self-interference: Components and Existing Cancellation Schemesmentioning

confidence: 99%

Balanced RF-circuit based self-interference cancellation for full duplex communications

Tang

Wang

2015

Ad Hoc Networks

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“…A novel design of a FD MIMO radio is presented in [11]. The authors' proposal provides meaningful results on SIC, reducing the complexity, cost and error of current models.…”

mentioning

confidence: 99%

Analyzing the potential of full duplex in 5G ultra-dense small cell networks

Sarret

Berardinelli

Mahmood

et al. 2016

J Wireless Com Network

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Full-duplex technology has become an attractive solution for future 5th generation (5G) systems for accommodating the exponentially growing mobile traffic demand. Full duplex allows a node to transmit and receive simultaneously in the same frequency band, thus, theoretically, doubling the system throughput over conventional half-duplex systems. A key limitation in building a feasible full-duplex node is the self-interference, i.e., the interference generated by the transmitted signal to the desired signal received on the same node. This constraint has been overcome given the recent advances in the self-interference cancellation technology. However, there are other limitations in achieving the theoretical full-duplex gain: residual self-interference, traffic constraints, and inter-cell and intra-cell interference. The contribution of this article is twofold. Firstly, achievable levels of self-interference cancellation are demonstrated using our own developed test bed. Secondly, a detailed evaluation of full-duplex communication in 5G ultra-dense small cell networks via system level simulations is provided. The results are presented in terms of throughput and delay. Two types of full duplex are studied: when both the station and the user equipments are full duplex capable and when only the base station is able to exploit simultaneous transmission and reception. The impact of the traffic profile and the inter-cell and intra-cell interferences is addressed, individually and jointly. Results show that the increased interference that simultaneous transmission and reception causes is one of the main limiting factors in achieving the promised full-duplex throughput gain, while large traffic asymmetries between downlink and uplink further compromise such gain.

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Full‐duplex Radios

Cited by 172 publications

References 11 publications

In-band full-duplex medium access control design for heterogeneous wireless LAN

In-band full-duplex medium access control design for heterogeneous wireless LAN

Balanced RF-circuit based self-interference cancellation for full duplex communications

Analyzing the potential of full duplex in 5G ultra-dense small cell networks

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