In-band full-duplex relaying for 5G cellular networks with wireless virtualization

Liu, Gang; Yu, F. Richard; Ji, Hong; Leung, Victor C. M.; Li, Xi

doi:10.1109/mnet.2015.7340425

Cited by 28 publications

(8 citation statements)

References 10 publications

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“…In addition, various advanced mixtures of FD and other new techniques were examined in the literature. To name a few, wireless power [13], [14], relaying [15]- [18], non-orthogonal multiple access (NOMA) [19], [20], deviceto-device (D2D) communications [21], [22], millimeter Wave (mmWave) [23], [24] and small cell [25]- [28], etc., can be combined with FD to further enhance the system performance.…”

Section: Introductionmentioning

confidence: 99%

Active Interference Cancellation for Full-Duplex Multiuser Networks With or Without Existence of Self-Interference

Lee

Huang

2019

IEEE Access

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It is understood that in a network with an in-band full-duplex (FD) access point (AP) simultaneously serving multiple half-duplex clients, various kinds of interference may severely degrade the network spectral efficiency (SE). In this paper, we first address the problem of canceling the interclient interference (ICI) from multiple uplink clients to multiple downlink clients in such a scenario. The proposed ICI nulling approach, namely, multiuser ICI cancellation (MU-IC2), enables the AP to actively and completely eliminate the ICI for the downlink clients. With this method, the gain from FD processing can be achieved much efficiently. Design guideline is given and reduced-complexity implementation for use with a large number of antennas at the AP is also derived. Furthermore, in some circumstances, notable residual self-interference (SI) exists at the AP due to the imperfection of SI cancellation during the FD operation. This may enlarge the interference observed by the downlink clients. We provide new ways, i.e., two MU-SI-IC2 approaches, to deal with this case based on the possible knowledge of SI as well. As a result, both the SI-induced interference and ICI are effectively eliminated, and the overall throughput can still be benefited from FD and kept at a high level. The simulation results show that in terms of the network SE, our proposed MU-IC2 and MU-SI-IC2 can significantly outperform some baseline schemes and the state-of-the-art active ICI mitigation methods in various scenarios.

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Section: Introductionmentioning

confidence: 99%

Active Interference Cancellation for Full-Duplex Multiuser Networks With or Without Existence of Self-Interference

Lee

Huang

2019

IEEE Access

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“…Therefore, the SI signal can be represented as r SI (t) = h SI (t) * s(t) = k n s(t − t n ). (5) In this paper, the SI signal in the RF domain of the near-end receiver of the full-duplex system is estimated using the DTV-LMS algorithm. The implementation process of this algorithm is described in detail in Section 3.…”

Section: System Modelmentioning

confidence: 99%

“…Compared to traditional half-duplex systems, such as a frequency division duplex (FDD) system and a frequency division duplex (TDD) system, the spectrum efficiency of the CCFD systems can be double. This increase has a significant advantage on throughput by reducing congestion [5,6]. However, the data from the uplink and downlink are transmitted while in the same frequency band, and the near-end receiver of the full duplex system will be subjected to high-power interference from the local transmitter.…”

Section: Introductionmentioning

confidence: 99%

A Novel Self-Interference Cancellation Method Using an Optimized LMS Algorithm in CCFD Systems for a 5G Communication Network

Sun

Zhao

2019

Applied Sciences

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The Co-frequency Co-time Full Duplex (CCFD) is a key concept in 5G wireless communication networks. The biggest challenge for CCFD wireless communication is the strong self-interference (SI) from near-end transceivers. Aiming at cancelling the SI of near-end transceivers in CCFD systems in the radio frequency (RF) domain, a novel time-varying Least Mean Square (LMS) adaptive filtering algorithm which is based on step-size parameters gradually decrease with time varying called the DTV-LMS algorithm is proposed in this paper. The proposed DTV-LMS algorithm in this paper establishes the non-linear relationship between step factor and the evolved arct-angent function, and using the relationship between the time parameter and error signal correlation value to coordinately control the step factor to be updated. This algorithm maintains a low computational complexity. Simultaneously, the DTV-LMS algorithm can also attain the ideal characteristics, including the interference cancellation ratio (ICR), convergence speed, and channel tracking, so that the SI signal in the RF domain of a full duplex system can be effectively cancelled. The analysis and simulation results show that the ICR in the RF domain of the proposed algorithm is higher than that in the compared algorithms and have a faster convergence speed. At the same time, the channel tracking capability has also been significantly enhanced in CCFD systems.

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“…Similarly to PVN, we consider that the bandwidth requested by each SU can be satisfied by one channel. Hence, the average number of SUs in the and the amount of resources requested by SUs considering each channel with bandwidth bps are calculated by (2) and 3, respectively.…”

Section: Wireless Communications and Mobile Computingmentioning

confidence: 99%

“…The Fifth Generation (5G) of wireless communication is envisioned to comprise three service categories-enhanced mobile broadband (eMBB), massive machine-type communication (mMTC), and ultra-reliable and low-latency communication (URLLC)-that have different requirements in terms of Quality of Service (QoS), Quality of Experience (QoE), and security [1]. To tackle this heterogeneity, Wireless Virtualization (WV) is put forward as a key technology [2], since virtual wireless networks (VWNs) with different services may share the same wireless infrastructure.…”

Section: Introductionmentioning

confidence: 99%

An Evolutionary Scheme for Secondary Virtual Networks Mapping onto Cognitive Radio Substrate

Balieiro

Falcao

Dias

2019

Wireless Communications and Mobile Computing

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The Fifth Generation (5G) of wireless communication is envisioned to comprise heterogeneous applications, different radio access technologies (RATs), and a large demand for mobile traffic. In this respect, Wireless Virtualization (WV) and Cognitive Radio (CR) are put forward as 5G enablers for providing additional spectrum resources through dynamic spectrum access (DSA) techniques, besides dealing with heterogeneity with no hardware modification. By empowering the synergy between CR and WV, we visualize an environment denoted as Cognitive Radio Virtual Networks Environment (CRVNE) that encompasses VWNs with different access priorities, called Primary Virtual Networks (PVNs) and Secondary Virtual Networks (SVNs) that may be deployed in an overlay manner. In this scenario, the SVNs users (SUs) access the resources opportunistically, which naturally raises challenges towards the SVN mapping. In this paper, we revisit our previous letter that models the interactions between PUs and SUs in a CRVNE and analyzes a proposed formulation for collision probability during the SVN mapping process. The current work is pioneer as it presents a comprehensive approach to the SVNs mapping problem; models, validates, and analyzes additional performance metrics such as SU blocking and SU dropping probabilities and joint utilization; formulates the SVNs mapping as a multiobjective problem; and proposes an evolutionary scheme based on Genetic Algorithms (GAs) to solve it. The results show that the proposed scheme outperforms the alternative method in terms of collision, SU dropping, SU blocking probabilities, and joint utilization under different primary and secondary loads.

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In-band full-duplex relaying for 5G cellular networks with wireless virtualization

Cited by 28 publications

References 10 publications

Active Interference Cancellation for Full-Duplex Multiuser Networks With or Without Existence of Self-Interference

Active Interference Cancellation for Full-Duplex Multiuser Networks With or Without Existence of Self-Interference

A Novel Self-Interference Cancellation Method Using an Optimized LMS Algorithm in CCFD Systems for a 5G Communication Network

An Evolutionary Scheme for Secondary Virtual Networks Mapping onto Cognitive Radio Substrate

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