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This work studies centrality metrics as forwarding load predictors, for both unicast and multicast traffic, within dynamic ad hoc network topologies. We present results from a series of emulation experiments based around an emergency response mobile network scenario. From collected temporal topological and traffic data, we calculate a rank correlation measure between predictive centrality metrics...
The evaluation of an IoMT system needs to include the assessment of LPI, LPE, or LPD. To provide a building block for these metrics, in this paper, we introduce the notion of the information-theoretic secrecy. In particular, we focus on the shadowing fading with the log-normal distribution. We extend a recent analysis for uncorrelated eavesdroppers to the case of correlated ones. Then we derive the...
This work considers the use of obfuscation against a global eavesdropper in a resource-constrained environment. We assume a network where network traffic (queries) is not always present on the network but is stochastic in nature. Even if the traffic is encrypted and the payload of packets are secure, under the threat of a passive adversary, activity over the links might be subjected to traffic analysis...
This paper studies the problem of routing in a multilayer (communication and social) network. Network protocols, such as link state routing and its variants, heavily used in mobile ad hoc networks (MANETs) cannot sustain robustness and efficiency as the topological information becomes easily stale with fast network dynamics. Attempts to collect and exchange excessive network information would result...
In this paper, we model a Stackelberg game in a simple Gaussian test channel where a human transmitter (leader) communicates a source message to a human receiver (follower). We model human decision making using prospect theory models proposed for continuous decision spaces. Assuming that the value function is the squared distortion at both the transmitter and the receiver, we analyze the effects of...
Wireless power transfer may enable remotely powered operation of low-energy devices. The use of directional antenna arrays makes millimeter wave (mmWave) band a potential candidate for wireless power transfer. The mmWave signals, however, are prone to blockage due to human bodies. This paper presents a feasibility study of using mmWave for wireless power transfer in a large-scale network consisting...
Recently, automatic modulation classification techniques using convolutional neural networks on raw IQ samples have been investigated and show promise when compared to more traditional likelihood-based or feature-based techniques. While likelihood-based and feature-based techniques are effective, making classification decisions directly on the raw IQ samples allows for reduced system complexity and...
Today, rapid business and technology innovations are producing an array of advanced commercial satellite communications (COMSATCOM) systems that can deliver massive amounts of SATCOM capacity at a fraction of current cost and offer communications diversity that is critical for achieving resilience in a military contested environment. Recognizing the alignment of commercial capabilities with the Department...
As DoD SATCOM stakeholders and developers, it is vital to understand innovative technical trends and both leverage and influence them in order to best address our priorities. These SATCOM development priorities are growth, adoption of open commercial standards, systemic availability and simplification. Major innovative trends in SATCOM development are Digital IF, modem advances and geographical distribution...
In this paper, the problem of minimizing the damaging effect on the frequency hopping (FH) spread-spectrum satellite is formulated using the two-player asymmetric zero-sum game framework. The payoff is modeled as the channel capacity of the defender under white additive Gaussian noise. The defender and attacker are capable of spreading their signals over a pre-specified frequency band. Two scenarios...
The Wideband Global SATCOM system (WGS) satellite has the unique means to set sub-channel (SC) gain for a specific link or bandwidth segment. Certain Ka-band antennas can switch to an orthogonal circular polarization (CP) to use the identical frequencies more than once in the same geographic location. This allows planners to boost total capacity in an area of operations (AOR) without adding assigned...
Wideband SATCOM provides essential beyond line-of-sight communications services. At this time, however, no widely adopted protocols exist to facilitate roaming between access domains. In addition, most commercial SATCOM networks rely on proprietary network management systems. This paper addresses use of a Manager of Manager architecture, supported by local intelligent agents, for managing a global...
This paper describes an approach to address the challenges currently found in the management, provisioning, and troubleshooting of deployed SATCOM Terminals. We believe the proposed solution will address a major capabilities gap in the DOD's ability to maintain reliable and resilient network communications flows required for mission success in a dynamic net-centric battlefield. The proposed solution...
This paper introduces a framework for super-resolution of scalable video based on compressive sensing and sparse representation of residual frames in reconnaissance and surveillance applications. We exploit efficient compressive sampling and sparse reconstruction algorithms to super-resolve the video sequence with respect to different compression rates. We use the sparsity of residual information...
In this paper, we consider the problem of direction-of-arrival (DoA) estimation using electronically steerable parasitic array radiator (ESPAR) antenna based on compressive sensing. For an ESPAR antenna, the beampatterns and sparse model of DoA estimation problem in terms of overcomplete dictionary and sampling grid is presented. The DoA estimation problem is formulated as a mixed-norm ℓ2,1 minimization...
In this paper we consider the broadband-narrowband coexistence scenario where the unused spectral gaps in the professional mobile radio (PMR) frequency band are used for broadband data communications. Spectrally confined filter bank based multicarrier (FBMC) waveform is applied for broadband transmission in order to minimize the interference leakage between the new broadband system and the legacy...
Electromagnetic interference can cause severe performance degradation on wireless communication systems. In modern military platforms there are many closely located electronic systems, which could potentially cause interference. The performance degradation is largely affected by the characteristics of the interference. With knowledge of the actual interference environment, radio receivers can be adapted...
In this paper, we address the use of multi-layered sliding windows to detect the presence of a wireless network for cognitive radio applications. Although synchronization signals of the Long Term Evolution (LTE) has been used as the reference system, the proposed scheme is generic in principle. Our proposed scheme doesn't require any a priori knowledge of the exact synchronization sequences, so it...
In this paper, we propose novel user clustering schemes for downlink non-orthogonal multiple access (NOMA) system, where an N-antenna base station (BS) selects and serves 2N users from K single antenna user equipments (UEs) (K ≥ 2N and K is even). In particular, we propose a signal difference and alignment (SDA) framework to achieve fair and spectral efficient user clustering for NOMA with flexible...
Device-to-device (D2D) communication has been proposed as a solution for vehicle-to-vehicle (V2V) communication, which has strict requirements on reliability and latency. Previous works on V2V communication typically assume single-antenna users, which ignore the potential of multiple antennas. By contrast, this paper studies an uplink power control problem in multi-antenna V2V underlay cellular networks...
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