Marina Mondin

California State University, Los Angeles, Electrical and Computer Engineering, Faculty Member

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I am a passionate teacher and researcher. My main fields of expertise are telecommunications and signal processing (often applied to physics-related problems, like quantum key distribution and analysis of dielectric mirrors for gravitational-waves detection)

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Papers by Marina Mondin

Connection between system parameters and localization probability in network of randomly distributed nodes

IEEE Transactions on Wireless Communications, 2007

Saturation throughput analysis of IEEE 802.11 in the presence of non ideal transmission channel and capture effects

IEEE Transactions on Communications, 2008

On the Linear Behaviour of the Throughput of IEEE 802.11 DCF in Non-Saturated Conditions

IEEE Communications Letters, 2007

Blind estimation of output labels of SIMO channels based on a novel clustering algorithm

IEEE Communications Letters, 1998

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Crystallization in Zirconia Film Nano-Layered with Silica

Nanomaterials

Gravitational waves are detected using resonant optical cavity interferometers. The mirror coatin... more Gravitational waves are detected using resonant optical cavity interferometers. The mirror coatings’ inherent thermal noise and photon scattering limit sensitivity. Crystals within the reflective coating may be responsible for either or both noise sources. In this study, we explored crystallization reduction in zirconia through nano-layering with silica. We used X-ray diffraction (XRD) to monitor crystal growth between successive annealing cycles. We observed crystal formation at higher temperatures in thinner zirconia layers, indicating that silica is a successful inhibitor of crystal growth. However, the thinnest barriers break down at high temperatures, thus allowing crystal growth beyond each nano-layer. In addition, in samples with thicker zirconia layers, we observe that crystallization saturates with a significant portion of amorphous material remaining.

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Realistic QKD system hacking and security

This paper discusses the most relevant aspects of the practical implementation of a long-range Qu... more This paper discusses the most relevant aspects of the practical implementation of a long-range Quantum Key Distribution (QKD) link with trusted nodes, achieving the highest possible secret key rate generation within the security and system level constraints. To this purpose, the implementation of an end-to-end QKD system will be discussed, including implementation aspects from physical transmission of photon states through a standard telecommunications grade optical fiber, to consideration of device imperfections, information reconciliation protocols. In addition, since there are circumstances when a fiber optical link may not be available, we will also discuss a test bench implementation of a Free Space Optics (FSO) QKD link. Furthermore, in spite of the fact that Discrete Variable QKD (DV-QKD) systems have reached a maturity level that allows their potential full realization and implementation for creation of a secure network backbone for key distribution in nations, in realistic ...

High level HW/SW Codesign as a solution for Software Defined Radio development

This paper introduces a technique to develop HW/SW radio systems based on the well-known Simulink... more This paper introduces a technique to develop HW/SW radio systems based on the well-known Simulink environment. The proposed high-level language and cosimulation environment allows to quickly explore the HW/SW design space, analyze the effect of implementation choices, optimize system parameters and minimize the cost/performance ratio. As a consequence, the proposed approach significantly reduces the time-to-market. The design of the physical link of the UMTS standard is reported as a case of study

On the throughput performance of multirate IEEE 802.11 networks with variable-loaded stations: analysis, modeling, and a novel proportional fairness criterion

IEEE Transactions on Wireless Communications, 2010

LDPC-based channel coding of correlated sources with iterative joint decoding

IEEE Transactions on Communications, 2006

Integrated services from high-altitude platforms: a flexible communication system

IEEE Communications Magazine, 2006

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The modified Gaussian: a novel wavelet with low sidelobes with applications to digital communications

IEEE Communications Letters, 1998

In this letter we present a wavelet with very low sidelobes whose spectral occupancy in the frequ... more In this letter we present a wavelet with very low sidelobes whose spectral occupancy in the frequency domain is controlled by a parameter that can assume any positive real value. The associated scaling function is derived from the Gaussian waveform. Due to its good spectral characteristics, this function is well suited as an elementary shaping pulse for digital modulation.

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Advanced Channel Coding for HAP-based Broadband Services [Internetworking and Resource Management in Satellite Systems Series]

IEEE Aerospace and Electronic Systems Magazine, 2007

ABSTRACT First Page of the Article

Performance of IA-MMSE Iterative Structures for SFBC Decoding in MIMO Systems Using Realistic System Parameters

2018 International Symposium on Networks, Computers and Communications (ISNCC), 2018

In this paper, a MIMO-OFDM system operating with SFBC encoded signals and affected by inter-cell ... more In this paper, a MIMO-OFDM system operating with SFBC encoded signals and affected by inter-cell interference is analyzed, and the performances of Interference Aware-Minimum Mean Square Error (IA-MMSE) symbol estimators are discussed in presence of realistic estimation of the interference auto-correlation matrix. Different estimation techniques are described and compared, based both on a system description using a $4\times 2$ channel matrix (requiring the estimation and inversion of a $4\times 4$ auto-correlation matrix), or using two $2\times 2$ matrices (requiring the estimation and inversion of two $2\times 2$ auto-correlation matrices). The first approach offers better performances, but the second approach has a very limited loss, counterbalanced by a simpler implementation complexity, characteristics that makes it an interesting solution in practical applications. An extensive simulation campaign using realistic system level parameters has been used for performance assessment.

Geometrically uniform TCM codes over groups based on L×MPSK constellations

IEEE Transactions on Information Theory, 1994

The thc ory of geometracally unaform (CL') sagnal constellations arid lanear codes over groups is... more

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Integration of a HAP within a Terrestrial UMTS Network: Interference Analysis and Cell Dimensioning

Wireless Personal Communications, 2003

In this paper we consider several issues regarding the use of a High Altitude Platform (HAP) as a... more In this paper we consider several issues regarding the use of a High Altitude Platform (HAP) as a mobile communications base station for the UMTS standard. We refer in particular to a solar powered unmanned stratospheric platform named Heliplat, which is currently being designed at Politecnico di Torino within the HeliNet project funded by the European Community as part of

System parameter optimization for minimization of sign error probability in free space optical CV-QKD

Quantum Communications and Quantum Imaging XVII

Information Reconciliation (IR) in QKD is a fundamental step in ensuring Alice and Bob share iden... more Information Reconciliation (IR) in QKD is a fundamental step in ensuring Alice and Bob share identical set of bits (reconciled key). IR could be done by one-way or two-way channel coding using an auxiliary public authenticated channel to send parities to correct the actual labels so that the sample labels at Alice and Bob match. We assume that communication is performed through an Optical Wireless (OW) or Free Space Optics (FSO) channel, which effects the received signal by a stochastic fading due to jitter in pointing. The effect is that the received samples do not match with the transmitted ones, this is the reason why IR is necessary in such a system. In a previous work, we analyzed the system performance over FSO channel, uncovering the dependence between performance and system parameters such as fading variance or the telescope gain. In this paper we want to study the overall performance and try to obtain optimal values for the parameters that influence the sign error probability.

Simultaneous Localization and Mapping with Application to Monitoring of Underground Transportation Infrastructure

2019 International Symposium on Advanced Electrical and Communication Technologies (ISAECT)

This paper presents the results of development, design and implementation of a Simultaneous Local... more This paper presents the results of development, design and implementation of a Simultaneous Localization And Mapping (SLAM) system for autonomous real-time localization with application to Underground Transportation Infrastructure (UTI) such as tunnels. Localization is achieved in absence of any GPS or auxiliary system. The system is a necessary element of a fully autonomous platform for detection of cracks and other anomalies on the interior surfaces of tunnels and other UTI. It can be used for tagging of high-resolution sensor data obtained with low-cost prototype data acquisition platforms previously developed [1], [2]. Visual based SLAM has been used as the core element in an architecture also employing a Commercial Off The Shelf (COTS) ZED stereocamera from Stereolabs. To achieve real-time operation, an NVIDIA Jetson Tx2 massively parallel Graphic Processing Unit (GPU) has been used as the core computational engine employing two different software libraries. We achieved localization at 5 frames per second (fps) using ORBSLAM2 open source software library, while the much lighter but proprietary ZED SDK was able to deliver performance at nearly 60 fps.

A Novel Proportional Fairness Criterion for Throughput Allocation in Multirate IEEE 802.11

ArXiv, 2008

This paper focuses on multirate IEEE 802.11 Wireless LAN employing the mandatory Distributed Coor... more This paper focuses on multirate IEEE 802.11 Wireless LAN employing the mandatory Distributed Coordination Function (DCF) option. Its aim is threefold. Upon starting from the multi-dimensional Markovian state transition model proposed by Malone \textit{et.al.} for characterizing the behavior of the IEEE 802.11 protocol at the Medium Access Control layer, it presents an extension accounting for packet transmission failures due to channel errors. Second, it establishes the conditions under which a network constituted by $N$ stations, each station transmitting with its own bit rate, $R^{(s)}_d$, and packet rate, $\lambda_s$, can be assumed loaded. Finally, it proposes a modified Proportional Fairness (PF) criterion, suitable for mitigating the \textit{rate anomaly} problem of multirate loaded IEEE 802.11 Wireless LANs, employing the mandatory DCF option. Compared to the widely adopted assumption of saturated network, the proposed fairness criterion can be applied to general loaded netwo...

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Capacity Optimization of Channel Models for a Pragmatic QKD Protocol Based on Spatial Entanglement of Twin Beams in PDC

One of the key issues in QKD is the rather limited data rate at which the secret key can be gener... more One of the key issues in QKD is the rather limited data rate at which the secret key can be generated. This paper explores the use of twin beams in a PDC process for imaging CCD devices whose photon counts in symmetric pixel positions can be used to generate secret keys. The fundamental reason is that the two beams are entangled in the photon number state and measurements of the correlation statistics should theoretically expose the presence of the eavesdropper. Via a binning approach the photon counts at Alice and Bob who each image one of the two beams, can be turned into discrete labels that represent elements of the raw key that needs further reconciliation and privacy amplification. Discrepancies between the photon counts can be modeled via a fictitious discrete memoryless channel. Furthermore, the use of multi-pixels images allows to create a number of parallel channels for generation of secret keys, thus significantly boosting the achievable key rate. This work explores the d...

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Use of Deep Learning for Automatic Detection of Cracks in Tunnels

Tunnel cracks on concrete surfaces are one of the earliest indicators of degradation, and if not ... more Tunnel cracks on concrete surfaces are one of the earliest indicators of degradation, and if not promptly treated, they could result in full closure of an entire infrastructure or even worse in a structural failure of it. Visual inspection, carried out by trained operators, is still the most commonly used technique, and according to the literature, automatic assessment systems are arguably expensive and still rely on old image processing techniques, precluding the possibility to afford a large quantity of them for a high-frequency monitoring. So, this article proposes a low cost, automatic detection system that exploits deep convolutional neural network (CNN) architectures for identifying cracks in tunnels relying only on low-resolution images. The trained model is obtained with two different methods: a custom CNN trained from scratch and a retrained 48-layer network, using supervised learning and transfer learning, respectively. Both architectures have been trained and tested with ...