Coverage Analysis of Millimeter Wave Decode-and-Forward Networks With Best Relay Selection

Belbase, Khagendra; Zhang, Zhang; Jiang, Hai; Tellambura, Chintha

doi:10.1109/access.2018.2827026

Cited by 53 publications

(35 citation statements)

References 41 publications

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“…With the aid of relay, the performance of secondary users in the cognitive network can be improved [21]; the physical layer security in the largescale fifth-generation network can be strengthened [22]; the energy efficiency and link reliability for the vehicular ad hoc networks can be enhanced [23]; the cellular coverage area can be extended via multihop D2D communications [6,7,24], especially for the millimeter-wave-based systems [25][26][27] and Internet-of-Things [28]; the high quality transmissions for the sensor network can be achieved [29] as well. However, based on the finding of this paper, the achievable diversity gain via relay transmissions will be seriously diluted under the masquerading attack.…”

Section: Discussionmentioning

confidence: 99%

On the Performance of the DNPS‐Based Relay Networks under Masquerading Attack

Chang

2018

Wireless Communications and Mobile Computing

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In the relay networks, two typical issues of physical layer security are selfishness and garbling. As a matter of fact, a certain nontypical but severely harmful misbehavior can also remove the cooperative diversity gain. Here, we coin the masquerading attack to indicate this kind of misbehavior. A masquerade relay can always pretend to be the best one to forward signals and, in consequence, deprive the others of the opportunities to cooperate. To the best of our knowledge, the impact of the masquerading attack has not yet been fully investigated. In this paper, multiple masquerade relays with random masquerading behavior are taken into account. Also, the complete channel effects, including the effects of the flat Rayleigh fading, log-normal shadowing, and path loss, are considered such that the geographical effects of the network topology can be completely captured. At last, the impact of the masquerade relays are evaluated in terms of the outage probability and end-to-end capacity.

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Section: Discussionmentioning

confidence: 99%

On the Performance of the DNPS‐Based Relay Networks under Masquerading Attack

Chang

2018

Wireless Communications and Mobile Computing

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“…Under the decode-and-forward relaying strategy, we adopt an opportunistic relay selection scheme with two phases. First, we select a set of UAV relays, which can successfully decode the messages received from S. Specifically, for a potential UAV relay R x ∈ Φ U , if the channel capacity between S and R x is greater than a threshold C th , the relay R x can decode the S's messages correctly [35,36], and the decoding set is defined asΦ = {R x ∈ Φ U , C SR x > C th }. After that, the UAV relay R 0 , which provides the lowest path loss to D, is selected fromΦ to forward the S's messages to D. To this end, the selected relay offers the minimum length of LOS or NLOS link to D.…”

Section: Relay Selection and Transmission Schemementioning

confidence: 99%

Secure On-Off Transmission in UAV Relay-Assisted mmWave Networks

Yang

Zhang

et al. 2019

Applied Sciences

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This paper investigates secure transmission in unmanned aerial vehicle (UAV) relay-assisted millimeter wave (mmWave) networks, where the selected UAV relay performs secure transmission in both the on-off and non-on-off schemes. Meanwhile, there are multiple eavesdroppers randomly distributed on the ground and attempting to wiretap the transmission. Leveraging the air-to-ground channel model and the tools of stochastic geometry, the novel expressions of transmit probability (TP) and secrecy outage probability (SOP) are derived in both the on-off and non-on-off transmission schemes with perfect beam alignment. The secrecy performance improvement is demonstrated in the on-off transmission scheme, and we find that there exists an optimal altitude of UAV relays to achieve the best TP. In addition, due to the limitations of UAV carriers, such as its low computational capacity and high mobility, the perfect beam alignment is difficult to achieve in the mmWave networks aided by UAV relays, and the effect of beam alignment error on the secrecy performance is investigated in the considered networks. Analyzing the numerical and simulation results, we find that the SOP will not have obvious deterioration when the beam alignment error is relatively small, and the SOP can be improved by using the antennas with a large number of elements. However, in high beam alignment error regime, the antenna arrays with a smaller number of elements will provide the better SOP.

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“…Thermal noise density is −174 dBm/Hz [27] and devices are using 18 dBm transmit power. Capacity of each link (i, j) at time t is C t ij = B · log 2 (1 + S t ij ) bits/sec, where B = 20 M Hz is bandwidth and SNR threshold S th ij is taken to be 20 dB [28]. We are assuming fixed packet length of 65535 bytes.…”

Section: Simulation Environmentmentioning

confidence: 99%

Network-Assisted D2D Relay Selection Under the Presence of Dynamic Obstacles

Singh

Ghosh

2019

2019 IEEE 44th Conference on Local Computer Networks (LCN)

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Millimeter wave (mmWave) channels in device to device (D2D) communication are susceptible to blockages in spite of using directional beams from multi-input multi-output (MIMO) antennas to compensate for high propagation loss. This motivates one to look for the presence of obstacles while forming D2D links among user equipments (UEs) which are in motion. In D2D communication, moving UEs also act as relays to forward data from one UE to another which introduces the problem of relay selection. The problem becomes more challenging when the obstacles are also in motion (dynamic obstacles) along with the moving UEs. First we have developed a probabilistic model for relay selection which considers both moving UEs and dynamic obstacles. Then we have analyzed the probability of dynamic obstacles blocking a link in 3D Euclidean space by exploiting the information from MIMO radar connected to the base station. Finally, using this information, we have developed unique strategies based on simple geometry to find the best relay which maximizes the expected data rate. Through simulations we have shown that our proposed strategy gives a significant improvement in packet loss due to mobility of nodes and dynamic obstacles in a mmWave channel over traditional approaches which do not consider dynamic obstacle's presence.

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Coverage Analysis of Millimeter Wave Decode-and-Forward Networks With Best Relay Selection

Cited by 53 publications

References 41 publications

On the Performance of the DNPS‐Based Relay Networks under Masquerading Attack

On the Performance of the DNPS‐Based Relay Networks under Masquerading Attack

Secure On-Off Transmission in UAV Relay-Assisted mmWave Networks

Network-Assisted D2D Relay Selection Under the Presence of Dynamic Obstacles

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