Analyzing a full-duplex cellular system

Goyal, Sanjay; Liu, Pei; Hua, Sha; Panwar, Shivendra S.

doi:10.1109/ciss.2013.6552310

Cited by 110 publications

(105 citation statements)

References 15 publications

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“…RELATED WORKS The impact of FD radios on cellular systems has been analysed recently in [6], [11], [12], which provide valuable insights into the design aspects and performance of such systems in terms of rate and energy performance. However, the problem of distributed joint power and user-frequency channel allocation in TNFD networks has not been addressed in these works.…”

Section: Introductionmentioning

confidence: 99%

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Fast-Lipschitz Power Control and User-Frequency Assignment in Full-Duplex Cellular Networks

Silva

Fodor

Fischione

2017

IEEE Trans. Wireless Commun.

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Abstract-In cellular networks, the three-node full-duplex transmission mode has the potential to increase spectral efficiency without requiring full-duplex capability of users. Consequently, three-node full-duplex in cellular networks must deal with selfinterference and user-to-user interference, which can be managed by power control and user-frequency assignment techniques. This paper investigates the problem of maximizing the sum spectral efficiency by jointly determining the transmit powers in a distributed fashion, and assigning users to frequency channels. The problem is formulated as a mixed-integer nonlinear problem, which is shown to be non-deterministic polynomial-time hard. We investigate a close-to-optimal solution approach by dividing the joint problem into a power control problem and an assignment problem. The power control problem is solved by FastLipschitz optimization, while a greedy solution with guaranteed performance is developed for the assignment problem. Numerical results indicate that compared to the half-duplex mode, both spectral and energy efficiencies of the system are increased by the proposed algorithm. Moreover, results show that the power control and assignment solutions have important, but opposite roles in scenarios with low or high self-interference cancellation. When the self-interference cancellation is high, user-frequency assignment is more important than power control, while power control is essential at low self-interference cancellation. I. INTRODUCTIONIn order to meet the need for explosive data volumes and data rates, wireless network operators seek to enhance the spectral efficiency in lower-frequency bands [1], and to exploit higher-frequency bands such as the millimiter waves. The research and standardization communities are currently studying physical layer technologies, including massive MIMO systems, spectrum sharing in mmWave networks, new waveforms, non-orthogonal multiple access technologies, and full-duplex communications [2], [3].In-band full-duplex (FD) transceivers are expected to improve the attainable spectral efficiency of traditional wireless networks operating with half-duplex (HD) transceivers by a factor of two [3]. Due to recent advancements in mitigating the inherent self-interference (SI) by means of passive suppression, analog and/or digital cancellation, in-band FD technology is quickly approaching the phase of commercial deployments in low-power wireless networks [4].

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Section: Introductionmentioning

confidence: 99%

“…With this, we update the current value of t k and t l (see lines [8][9][10][11][12][13][14]. In the following, t l1 (t l2 in the respective upper interval) is updated and the algorithm finds t k for the new given value of t l (see lines 10-11 and 16-17).…”

mentioning

confidence: 99%

Fast-Lipschitz Power Control and User-Frequency Assignment in Full-Duplex Cellular Networks

Silva

Fodor

Fischione

2017

IEEE Trans. Wireless Commun.

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“…A first such aspect relates to the pathloss exponent. Prior works [13] model the pathloss at a distance r as βr −η where η is the exponent while β is the intercept, defined as the pathloss at a unit distance; this single-slope model is inadequate to represent the pathloss among BSs, which as we shall see is critical in full-duplex networks, and a multi-slope model is much more adequate. A second aspect that is ignored in prior works, because of the complexity that it brings into the analysis, is MIMO.…”

Section: Introductionmentioning

confidence: 99%

Full-Duplex MIMO in Cellular Networks: System-Level Performance

Mungara

Thibault

Lozano

2017

IEEE Trans. Wireless Commun.

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Abstract-This paper characterizes, through a stochastic geometry analysis, the increase in spectral efficiency that fullduplex transmission brings about in wireless networks. While, on isolated links, full-duplex promises a doubling of the spectral efficiency, in the context of a network this is weighted down by the corresponding rise in interference, and our characterization captures the balance of these effects. The analysis encompasses both the forward link (FL) and the reverse link (RL) with singleuser and multiuser transmissions. And, as a complement to the analysis, Monte-Carlo simulations on a Vodafone LTE field test network are also presented.In the FL, the rise in interference is found to have minor impact and a doubling in spectral efficiency can indeed be approached, especially in microcellular networks. In the RL, however, a major difficulty arises in the form of exceedingly strong interference among base stations. This renders full-duplex transmission all but unfeasible in macrocellular networks (unless major countermeasures could be implemented) and undesirable in dense microcellular networks. Only in microcells with sufficient spacing among base stations does RL full-duplex pay off. Thus, full-duplex is seen not to blend easily with densification.

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“…They conclude that the capacity can be maximized by operating all nodes in either HD or FD compared to their mixtures, whereas [23] considers a single-cell setting and [22,24] consider multicell setting. A cellular system comprising an FD source and HD destination has been illustrated in which the throughput gain is analyzed via extensive simulation [25]. In [26], the numbers of base station antennas and users antennas are increasing with a fixed ratio, while the capacity grows by the number of users and SNR.…”

Section: Introductionmentioning

confidence: 99%

A Stochastic Geometry Approach to Full‐Duplex MIMO Relay Network

Hindia

Fadoul

Rahman

et al. 2018

Wireless Communications and Mobile Computing

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Cellular networks are extensively modeled by placing the base stations on a grid, with relays and destinations being placed deterministically. These networks are idealized for not considering the interferences when evaluating the coverage/outage and capacity. Realistic models that can overcome such limitation are desirable. Specifically, in a cellular downlink environment, the full-duplex (FD) relaying and destination are prone to interferences from unintended sources and relays. However, this paper considered two-hop cellular network in which the mobile nodes aid the sources by relaying the signal to the dead zone. Further, we model the locations of the sources, relays, and destination nodes as a point process on the plane and analyze the performance of two different hops in the downlink. Then, we obtain the success probability and the ergodic capacity of the two-hop MIMO relay scheme, accounting for the interference from all other adjacent cells. We deploy stochastic geometry and point process theory to rigorously analyze the two-hop scheme with/without interference cancellation. These attained expressions are amenable to numerical evaluation and are corroborated by simulation results.

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Analyzing a full-duplex cellular system

Cited by 110 publications

References 15 publications

Fast-Lipschitz Power Control and User-Frequency Assignment in Full-Duplex Cellular Networks

Fast-Lipschitz Power Control and User-Frequency Assignment in Full-Duplex Cellular Networks

Full-Duplex MIMO in Cellular Networks: System-Level Performance

A Stochastic Geometry Approach to Full‐Duplex MIMO Relay Network

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