Browsing by Author "Marchetti, Nicola"
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3D Beam-Steering MIMO Antenna for On-Body IoT Applications
Zandamela, Abel; Marchetti, Nicola; Ammann, Max J.; Narbudowicz, Adam (IEEE, 2023)In this article, a compact 3D beam-steering MIMO antenna operating at 5.75 GHz is proposed for on-body Internet of Things (IoT) applications. The planar antenna comprises a central patch and two concentric annular rings. ... -
Angle of Arrival Estimation Via Small IoT Devices: Miniaturized Arrays vs MIMO Antennas
Zandamela, Abel; Chiumento, Alessandro; Marchetti, Nicola; Narbudowicz, Adam (2022)This tutorial discusses the problem of Angle-of-Arrival (AoA) estimation from small Internet of Things (IoT) devices. It reviews the limitations and challenges of existing miniaturization strategies, which involve classical ... -
Artificial Intelligence for Dynamical Systems in Wireless Communications: Modeling for the Future
Siljak, Harun; Marchetti, Nicola (2021)Dynamical systems are no strangers in wireless communications. Our story will necessarily involve chaos, but not in the terms secure chaotic communications have introduced it: we will look for the chaos, complexity and ... -
Caching to the Sky: Performance Analysis of Cache-Assisted CoMP for Cellular-Connected UAVs
Marchetti, Nicola (2019)Providing connectivity to aerial users, such as cellular-connected unmanned aerial vehicles (UAVs) or flying taxis, is a key challenge for tomorrow’s cellular systems. In this paper, the use of ... -
Compact Full-Duplex Amplify-and-Forward Relay Design for 5G Applications
Dey, Indrakshi; Marchetti, Nicola; Zhao, Zhixing; Butt, M. Majid (2018)This paper presents a compact circuit design for implementing full-duplex relays serving network architectures envisioned for 5G applications. The proposed design prevents the transmit signal from interfering with the ... -
Compact MIMO Antenna for MUSIC-Based Angle of Arrival Estimation in Wrist-Worn Devices
Zandamela, Abel; Marchetti, Nicola; Narbudowicz, Adam (IEEE, 2022)In this work, we propose a compact Multiple-Input Multiple-Output (MIMO) antenna for wrist-worn devices. The design is capable of unidirectional beamsteering across the entire horizontal plane, a property that is exploited ... -
Compact MIMO Antennas for Localization and PHY layer Security in Wrist Worn IoT Devices
Zandamela, Abel Abdul; Marchetti, Nicola; Ammann, Max J.; Narbudowicz, Adam (SFI, 2022)On-body IoT technologies, like wrist-worn devices, are becoming a key enabler of many cutting-edge applications such as connected healthcare systems (e.g, patient monitoring, in-hospital localization, sports fitness, and ... -
Compact Stacked-Patch Antenna for Directional Modulation in Azimuth and Elevation Planes
Zandamela, Abel Abdul; Marchetti, Nicola (IEEE, 2022)This work proposes a compact stacked-patch antenna capable of beamsteering in the vertical and horizontal directions. These characteristics are studied to realize directional modulation (DM) schemes in the vertical and ... -
Cooperative Transmission and Probabilistic Caching for Clustered D2D Networks
Marchetti, Nicola (2019)In this paper, we aim at maximizing the cache off loading gain for a clustered device-to-device (D2D) caching network by exploiting probabilistic caching and cooperative transmission among the ... -
Directional Modulation for Enhanced Privacy in Smart Watch Devices
Zandamela, Abel Abdul; Marchetti, Nicola; Narbudowicz, Adam (2023)This article studies security aspects of data transmission in on-body Internet of Things (IoT) devices through the use of Directional Modulation (DM) from a smart watch integrated antenna. DM is a beamsteering-based Physical ... -
Directional Modulation from a Wrist-Wearable Compact Antenna
Zandamela, Abel Abdul; Marchetti, Nicola (IEEE, 2022)This work proposes compact multiport antennas for directional modulation (DM) on wrist-wearable devices to improve the secrecy and privacy of the transmitted data. The DM performance is investigated using the antenna in ... -
Electrically Small Multimodal 3D Beamforming MIMO Antenna for PHY-Layer Security
Zandamela, Abel Abdul; Marchetti, NicolaThis work proposes an electrically small 3D beam- forming antenna for PHYsical Layer (PHY-layer) security. The antenna comprises two layers of stacked patch structures, and is a five-mode five-port MIMO system operating ... -
Enabling Asynchronous Machine-Type D2D Communication Using Multiple Waveforms in 5G
Marchetti, Nicola; Farhang, Arman (2018) -
Energy Efficient Dynamic Directional Modulation with Electrically Small Antennas
Marchetti, Nicola; Narbudowicz, Adam (2022)This letter proposes a compact and energy efficient Directional Modulation (DM) scheme for small and power constrained devices (e.g. Internet of Things wireless sensors). The scheme uses a uniform circular array of monopole ... -
Energy-Efficient Physical Layer Security for Wearable IoT Devices
Zandamela, Abel Abdul; Marchetti, Nicola (2023)This work proposes an energy-efficient Directional Modulation (DM) scheme for on-body Internet of Things (IoT) devices. DM performance is tested using a 5-port stacked-patch MIMO antenna under two scenarios: free space ... -
Flexible Multimode-Based Beamforming MIMO Antenna
Zandamela, Abel Abdul; Marchetti, Nicola (2023)This work proposes compact, flexible Multiple Input Multiple Output (MIMO) antennas. The design principle is based on the excitation of different orthogonal radiating modes within the same antenna volume. Via phase ... -
On optimizing power allocation for reliable communication over fading channels with uninformed transmitter
Marchetti, Nicola (2018)We investigate energy efficient packet scheduling and power allocation problem for the services which require reliable communication to guarantee a certain quality of experience (QoE). We establish links between average ... -
Pattern and Polarization Diversity Multi-Sector Annular Antenna for IoT Applications
Zandamela, Abel; Marchetti, Nicola; Ammann, Max J.; Narbudowicz, Adam (IEEE, 2023)This work proposes a small pattern and polarization diversity multi-sector annular antenna with electrical size and profile of ka = 1.2lambda and 0.018lambda, respectively. The antenna is planar and comprises annular sectors ... -
Performance of Massive MIMO Self-Backhauling for Ultra-Dense Small Cell Deployments
Marchetti, Nicola (2018)A key aspect of the fifth-generation wireless communication network will be the integration of different services and technologies to provide seamless connectivity. In this paper, we consider using massive ... -
Small Dual-Band 3D Beamforming MIMO Antenna
Zandamela, Abel Abdul; Marchetti, Nicola; Narbudowicz, Adam (IEEE, 2023)This work proposes a small dual-band (2.4 GHz and 4.89 GHz bands) 3D beamforming Multiple-Input Multiple-Output (MIMO) antenna for emerging size-constrained Internet of Things (IoT) applications. The performance is realized ...