The Experts below are selected from a list of 3141 Experts worldwide ranked by ideXlab platform
Michele Zorzi - One of the best experts on this subject based on the ideXlab platform.
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design aspects of short range millimeter wave networks a mac layer perspective
IEEE Network, 2016Co-Authors: Hossein Shokrighadikolaei, Carlo Fischione, Petar Popovski, Michele ZorziAbstract:Increased density of wireless devices, ever growing demands for extremely high data rate, and spectrum scarcity at microwave bands make the millimeter-wave frequencies an important player in future wireless networks. However, millimeter-wave communication systems exhibit severe attenuation, blockage, and deafness, and may need microwave networks for coordination and fall-back support. To compensate for high attenuation, mmWave systems exploit highly directional operation, which in turn substantially reduces the interference footprint. The significant differences between millimeter-wave networks and legacy communication technologies challenge the classical design approaches, especially at the MAC layer, which has received comparatively less attention than PHY and propagation issues in the literature so far. In this article, the MAC layer design aspects of short-range millimeter- wave networks are discussed. In particular, we explain why current mmWave standards fail to fully exploit the potential advantages of short-range mmWave technology, and argue for the necessity of new collision-aware hybrid resource allocation frameworks with on-demand control Messages, the advantages of a collision Notification Message, and the potential of multihop communication to provide reliable mmWave connections.
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design aspects of short range millimeter wave networks a mac layer perspective
arXiv: Information Theory, 2015Co-Authors: Hossein Shokrighadikolaei, Carlo Fischione, Petar Popovski, Michele ZorziAbstract:Increased density of wireless devices, ever growing demands for extremely high data rate, and spectrum scarcity at microwave bands make the millimeter wave (mmWave) frequencies an important player in future wireless networks. However, mmWave communication systems exhibit severe attenuation, blockage, deafness, and may need microwave networks for coordination and fall-back support. To compensate for high attenuation, mmWave systems exploit highly directional operation, which in turn substantially reduces the interference footprint. The significant differences between mmWave networks and legacy communication technologies challenge the classical design approaches, especially at the medium access control (MAC) layer, which has received comparatively less attention than PHY and propagation issues in the literature so far. In this paper, the MAC layer design aspects of short range mmWave networks are discussed. In particular, we explain why current mmWave standards fail to fully exploit the potential advantages of short range mmWave technology, and argue for the necessity of new collision-aware hybrid resource allocation frameworks with on-demand control Messages, the advantages of a collision Notification Message, and the potential of multihop communication to provide reliable mmWave connections.
Sherah Kurnia - One of the best experts on this subject based on the ideXlab platform.
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gain loss framing comparing the push Notification Message to increase purchase intention in e marketplace mobile application
IEEE Access, 2020Co-Authors: Priscilla Tiffany, Aa Pinem, An Hidayanto, Sherah KurniaAbstract:Cart abandonment is a phenomenon that occurs when a customer begins an online transaction but does not complete the sale until the payment process of an e-marketplace app. It has become an issue for e-marketplace sellers and developers because it can reduce sales and delay income. One way to reduce cart-abandonment rates is to send push Notifications as a reminder to persuade customers to complete their transaction. A stimulus-organism-response (SOR) framework is used as the conceptual foundation. The stimulus is the push Notification, then the organism perceives the value of the product, and purchase intention is the response . The push Notification is designed to use Message framing, which can be gain-framed or loss-framed. The personalization effect is also analyzed, because it has been shown to persuade users with marketing and promotional products effectively. This study also compares two product types: utilitarian and hedonic. The study was conducted with a 2 (gain-framed and loss-framed) $\times $ 2 (hedonic and utilitarian) $\times $ 2 (personalized and general) between-subjects experiment. Hypotheses were tested by comparing the perceived value for each group using analysis of variance and a mediation analysis of 600 datasets. The result shows a general Message with gain-framed and the loss-framed Message is not significantly different from the perceived value of the product, regardless the product type. A personalized Message with gain-framed content has a better effect than loss-framed content as it relates to the perceived value of a utilitarian product, but the improvement is not significant for a hedonic product. Perceived value of the product also has a significant effect on purchase intention and partially mediated the effect of Message-framing toward product purchase intention. Thus, it is better to design the push Notification as a personalized Message with gain-framed Message content in order to reduce cart-abandonment rates.
Hossein Shokrighadikolaei - One of the best experts on this subject based on the ideXlab platform.
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design aspects of short range millimeter wave networks a mac layer perspective
IEEE Network, 2016Co-Authors: Hossein Shokrighadikolaei, Carlo Fischione, Petar Popovski, Michele ZorziAbstract:Increased density of wireless devices, ever growing demands for extremely high data rate, and spectrum scarcity at microwave bands make the millimeter-wave frequencies an important player in future wireless networks. However, millimeter-wave communication systems exhibit severe attenuation, blockage, and deafness, and may need microwave networks for coordination and fall-back support. To compensate for high attenuation, mmWave systems exploit highly directional operation, which in turn substantially reduces the interference footprint. The significant differences between millimeter-wave networks and legacy communication technologies challenge the classical design approaches, especially at the MAC layer, which has received comparatively less attention than PHY and propagation issues in the literature so far. In this article, the MAC layer design aspects of short-range millimeter- wave networks are discussed. In particular, we explain why current mmWave standards fail to fully exploit the potential advantages of short-range mmWave technology, and argue for the necessity of new collision-aware hybrid resource allocation frameworks with on-demand control Messages, the advantages of a collision Notification Message, and the potential of multihop communication to provide reliable mmWave connections.
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design aspects of short range millimeter wave networks a mac layer perspective
arXiv: Information Theory, 2015Co-Authors: Hossein Shokrighadikolaei, Carlo Fischione, Petar Popovski, Michele ZorziAbstract:Increased density of wireless devices, ever growing demands for extremely high data rate, and spectrum scarcity at microwave bands make the millimeter wave (mmWave) frequencies an important player in future wireless networks. However, mmWave communication systems exhibit severe attenuation, blockage, deafness, and may need microwave networks for coordination and fall-back support. To compensate for high attenuation, mmWave systems exploit highly directional operation, which in turn substantially reduces the interference footprint. The significant differences between mmWave networks and legacy communication technologies challenge the classical design approaches, especially at the medium access control (MAC) layer, which has received comparatively less attention than PHY and propagation issues in the literature so far. In this paper, the MAC layer design aspects of short range mmWave networks are discussed. In particular, we explain why current mmWave standards fail to fully exploit the potential advantages of short range mmWave technology, and argue for the necessity of new collision-aware hybrid resource allocation frameworks with on-demand control Messages, the advantages of a collision Notification Message, and the potential of multihop communication to provide reliable mmWave connections.
Radha Poovendran - One of the best experts on this subject based on the ideXlab platform.
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optimal jamming attack strategies and network defense policies in wireless sensor networks
IEEE Transactions on Mobile Computing, 2010Co-Authors: Iordanis Koutsopoulos, Radha PoovendranAbstract:We consider a scenario where a sophisticated jammer jams an area in which a single-channel random-access-based wireless sensor network operates. The jammer controls the probability of jamming and the transmission range in order to cause maximal damage to the network in terms of corrupted communication links. The jammer action ceases when it is detected by the network (namely by a monitoring node), and a Notification Message is transferred out of the jammed region. The jammer is detected by employing an optimal detection test based on the percentage of incurred collisions. On the other hand, the network defends itself by computing the channel access probability to minimize the jamming detection plus Notification time. The necessary knowledge of the jammer in order to optimize its benefit consists of knowledge about the network channel access probability and the number of neighbors of the monitor node. Accordingly, the network needs to know the jamming probability of the jammer. We study the idealized case of perfect knowledge by both the jammer and the network about the strategy of each other and the case where the jammer and the network lack this knowledge. The latter is captured by formulating and solving optimization problems where the attacker and the network respond optimally to the worst-case or the average-case strategies of the other party. We also take into account potential energy constraints of the jammer and the network. We extend the problem to the case of multiple observers and adaptable jamming transmission range and propose a meaningful heuristic algorithm for an efficient jamming strategy. Our results provide valuable insights about the structure of the jamming problem and associated defense mechanisms and demonstrate the impact of knowledge as well as adoption of sophisticated strategies on achieving desirable performance.
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optimal jamming attacks and network defense policies in wireless sensor networks
IEEE International Conference Computer and Communications, 2007Co-Authors: Mingyan Li, Iordanis Koutsopoulos, Radha PoovendranAbstract:We consider a scenario where a sophisticated jammer jams an area in a single-channel wireless sensor network. The jammer controls the probability of jamming and transmission range to cause maximal damage to the network in terms of corrupted communication links. The jammer action ceases when it is detected by a monitoring node in the network, and a Notification Message is transferred out of the jamming region. The jammer is detected at a monitor node by employing an optimal detection test based on the percentage of incurred collisions. On the other hand, the network computes channel access probability in an effort to minimize the jamming detection plus Notification time. In order for the jammer to optimize its benefit, it needs to know the network channel access probability and number of neighbors of the monitor node. Accordingly, the network needs to know the jamming probability of the jammer. We study the idealized case of perfect knowledge by both the jammer and the network about the strategy of one another, and the case where the jammer or the network lack this knowledge. The latter is captured by formulating and solving optimization problems, the solutions of which constitute best responses of the attacker or the network to the worst-case strategy of each other. We also take into account potential energy constraints of the jammer and the network. We extend the problem to the case of multiple observers and adaptable jamming transmission range and propose a intuitive heuristic jamming strategy for that case.
Priscilla Tiffany - One of the best experts on this subject based on the ideXlab platform.
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gain loss framing comparing the push Notification Message to increase purchase intention in e marketplace mobile application
IEEE Access, 2020Co-Authors: Priscilla Tiffany, Aa Pinem, An Hidayanto, Sherah KurniaAbstract:Cart abandonment is a phenomenon that occurs when a customer begins an online transaction but does not complete the sale until the payment process of an e-marketplace app. It has become an issue for e-marketplace sellers and developers because it can reduce sales and delay income. One way to reduce cart-abandonment rates is to send push Notifications as a reminder to persuade customers to complete their transaction. A stimulus-organism-response (SOR) framework is used as the conceptual foundation. The stimulus is the push Notification, then the organism perceives the value of the product, and purchase intention is the response . The push Notification is designed to use Message framing, which can be gain-framed or loss-framed. The personalization effect is also analyzed, because it has been shown to persuade users with marketing and promotional products effectively. This study also compares two product types: utilitarian and hedonic. The study was conducted with a 2 (gain-framed and loss-framed) $\times $ 2 (hedonic and utilitarian) $\times $ 2 (personalized and general) between-subjects experiment. Hypotheses were tested by comparing the perceived value for each group using analysis of variance and a mediation analysis of 600 datasets. The result shows a general Message with gain-framed and the loss-framed Message is not significantly different from the perceived value of the product, regardless the product type. A personalized Message with gain-framed content has a better effect than loss-framed content as it relates to the perceived value of a utilitarian product, but the improvement is not significant for a hedonic product. Perceived value of the product also has a significant effect on purchase intention and partially mediated the effect of Message-framing toward product purchase intention. Thus, it is better to design the push Notification as a personalized Message with gain-framed Message content in order to reduce cart-abandonment rates.
