Capacity Analysis of Device-to-Device mmWave Networks Under Transceiver Distortion Noise and Imperfect CSI

Tlebaldiyeva, Leila; Maham, Behrouz; Tsiftsis, Theodoros A.

doi:10.1109/tvt.2020.2983417

Cited by 11 publications

(4 citation statements)

References 22 publications

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“…In this paper, we treat mmWave communication over access links, for which we employ the analytical Nakagamim channel model (similar to [20]- [24]) concatenated with a random blockage model. The proposed concatenated channel model is useful because of number of reasons.…”

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confidence: 99%

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Capacity Analysis of Coordinated Multipoint Reception for mmWave Uplink With Blockages

Maham

Popovski

2020

IEEE Trans. Veh. Technol.

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We consider an uplink coordinated multi-point (CoMP) transmission from a user served by multiple base stations (BSs) which are connected to each other via a central unit (CU). We model the millimeter-wave communication link with Nakahami-m fading and random blockage. In this paper, we investigate the impact of blockage on the system ergodic capacity and try to find analytical formulation which can be useful in future optimization problems such as power control and resource allocations. The system performance is analyzed by deriving the probability density function of the received signal and finding closed form solution of ergodic capacity. Finally, the analytical results are compared with simulations and the impact of blockage is studied numerically. Numerical results show the efficiency of using CoMP in capacity improvement and reducing the blockage effect, as well as necessity of considering the blockage effect in performance analysis. I. INTRODUCTIONMillimeter-wave (mmWave) communications is one of the main enabling technologies for 5G and Beyond mobile networks due to abundance of unused frequency bands in this spectrum. However, due to challenges such as high path loss and blockage, ultra-dense deployment of base stations (BSs) is required to improve the coverage. The further discussion of the above is given in [1], [2] and references therein. An efficient strategy to tackle adverse effects of mmWave communications is coordination among small cells by employing coordinated multi-point (CoMP) systems which is necessary to reduce handoff and inter-cell interference. The CoMP systems are employed in 4G LTE-A (see, e.g., [3]-[5]), especially for celledge users improvement. They will be also featured in 5G systems as a part of the cloud-radio access networks (C-RAN) architecture (see, e.g., [6], [7]). Despite the great potential of CoMP based mmWave cellular communications, there are many key technical challenges need to be addressed [5], [8], [9].The performance of CoMP system has been investigated in the literature. For instance, in [10], the outage probability of joint processing CoMP using maximum ratio transmission was presented. The capacity analysis for CoMP transmission over fading channels is also studied in a number of work such as [4] and [11], in which downlink and uplink scenarios were considered, respectively. Moreover, the devices in mmWave

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“…n Λ n,i,k f γi (γ; k)(24) Authorized licensed use limited to: Aalborg Universitetsbibliotek. Downloaded on December 08,2020 at 13:02:27 UTC from IEEE Xplore.…”

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Capacity Analysis of Coordinated Multipoint Reception for mmWave Uplink With Blockages

Maham

Popovski

2020

IEEE Trans. Veh. Technol.

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“…5 illustrates the impact of N and small-scale fading parameter m on the average BER performance at different RIS locations on the x-axis. Similar to [45] and [56], we assume LOS and NLOS mmWave links with m = 2 and m = 4, respectively. As expected, the system with N = 24 achieves better BER than that with N = 16.…”

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confidence: 99%

RIS-Assisted Full-Duplex Relay Systems

Arzykulov

Nauryzbayev

Çelik

et al. 2022

IEEE Systems Journal

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Reconfigurable intelligent surfaces (RISs) have recently been presented as a revolutionary technique and recognized as one of the candidates for beyond fifth-generation wireless networks. The RIS technology becomes especially attractive due to its capability to operate in a full-duplex (FD) mode, which is able to ideally double the half-duplex radio spectrum efficiency. This article analyzes the performance of an RIS-aided multihop FD relaying system, where an intermediate FD relay is employed to defeat the far-field path-loss effect inherent to RIS communication links. To this end, we analytically derive exact and asymptotic closed-form expressions for the outage probability, average spectral efficiency, and average bit error rate. The RIS-aided system demonstrates effective performance improvement for the proposed network. However, from the results, it is noticed that the increase in the number of RIS units within a certain communication link does not provide linear performance improvement due to the RIS channel's far-field path-loss model. Thus, mixing active FD relaying techniques with passive RIS platforms can be an ideal solution to improve further system performance, such as outage probability, average spectral efficiency, and average bit error rate in RIS-enabled networks.Index Terms-Bit error rate (BER), full-duplex (FD), outage probability (OP), reconfigurable intelligent surface (RIS), spectral efficiency. I. INTRODUCTIONF UTURE wireless networks will be required to provide a thousand times as much capacity increase compared to the current networks to support the quality of service (QoS) needed by high-data-rate applications, such as virtual reality and three-dimensional (3-D) video [1]. This enormous increase in data traffic cannot be obtained with the existing wireless communication systems. Hence, intensive research is being carried out by academia and industry to overcome the deficiencies of traditional transmission concepts. One of the promising technologies for future wireless networks is millimeter-wave (mmWave) communication that can provide gigabits-per-second Manuscript

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“…However, as we noted above, these PDFs are hard to obtain, because the closed-form expression of the distribution of the sum of arbitrary Gamma RVs is not known. However, several approximation methods [46]- [48] to estimate the distribution of sum of Gamma RVs are reported in the literature. These methods offer better accuracy when the number of RVs to be summed are very high.…”

Section: Optimization Of Closed-loop Teleoperation Systemmentioning

confidence: 99%

Statistical Characterization of Closed-Loop Latency at the Mobile Edge

Suman¹,

Chiariotti²,

Stefanović³

et al. 2022

Preprint

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The stringent timing and reliability requirements in mission-critical applications require a detailed statistical characterization of the latency. Teleoperation is a representative use case, in which a human operator (HO) remotely controls a robot by exchanging command and feedback signals. We present a framework to analyze the latency of a closed-loop teleoperation system consisting of three entities: HO, robot located in remote environment, and a Base Station (BS) with Mobile edge Computing (MEC) capabilities. A model of each component of the system is used to analyze the closed-loop latency and decide upon the optimal compression strategy. The closed-form expression of the distribution of the closed-loop latency is difficult to estimate, such that suitable upper and lower bounds are obtained. We formulate a non-convex optimization problem to minimize the closed-loop latency. Using the obtained upper and lower bound on the closed-loop latency, a computationally efficient procedure to optimize the closed-loop latency is presented. The simulation results reveal that compression of sensing data is not always beneficial, while system design based on average performance leads to under-provisioning and may cause performance degradation. The applicability of the proposed analysis is much wider than teleoperation, for systems whose latency budget consists of many components.

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Capacity Analysis of Device-to-Device mmWave Networks Under Transceiver Distortion Noise and Imperfect CSI

Cited by 11 publications

References 22 publications

Capacity Analysis of Coordinated Multipoint Reception for mmWave Uplink With Blockages

Capacity Analysis of Coordinated Multipoint Reception for mmWave Uplink With Blockages

RIS-Assisted Full-Duplex Relay Systems

Statistical Characterization of Closed-Loop Latency at the Mobile Edge

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