Marija Poposka | Ss. Cyril & Methodius University in Skopje (original) (raw)
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Papers by Marija Poposka
IEEE Communications Letters
2022 30th Telecommunications Forum (TELFOR)
ITU Journal on Future and Evolving Technologies
Mobile Edge Computing (MEC) has recently emerged as a new communications/computing concept that a... more Mobile Edge Computing (MEC) has recently emerged as a new communications/computing concept that amends the limited computing of IoT devices by completely or partially offloading the computational tasks to the MEC servers at the network edge (typically co-located with the base stations). Because IoT devices are typically power limited, the potential of the MEC is further enhanced by its integration with wireless power transfer technology, especially for those IoT devices with a high duty cycle that requires frequent battery replacement. This paper develops fairness-aware resource allocation schemes for a WPT-assisted MEC system whose Energy Harvesting Users (EHUs) employ either binary or partial offloading. Specifically, the proposed schemes optimize the computational speeds and the energy harvesting and offloading durations of the EHUs with the aim to maximize the minimum of their computed bits (sum of locally and remotely processed bits of each EHU), subject to the RF energy harves...
2019 14th International Conference on Advanced Technologies, Systems and Services in Telecommunications (TELSIKS)
In the literature, wireless powered communication networks (WPCNs) are typically assumed to emplo... more In the literature, wireless powered communication networks (WPCNs) are typically assumed to employ dynamic time division multiple access (TDMA), such that the rate and duration for information transmission of each energy harvesting user (EHU) is adjusted in each TDMA frame. Such implementations are fairly complex, so, in this paper, we propose a simple model for a WPCN employing a static TDMA, where each EHU employs fixed rate transmission over fixed time slot duration. Specifically, we develop a simple communication scheme that maximizes the network throughput by proper selection of the duration of the radio frequency energy broadcasts by the base station (BS), and the optimal information rate and optimal transmission duration of each EHU. The performance of such system depends only on the average gains of the channels between the BS and each EHU, which can be estimated more cost effectively than the instantaneous channel state information.
Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 2021
In this paper, we propose a single RF-chain multiantenna full-duplex (FD) relay built with b-bit ... more In this paper, we propose a single RF-chain multiantenna full-duplex (FD) relay built with b-bit analog phase shifters. Assuming only passive self-interference cancellation at the FD relay, we derive the achievable data rate of a system comprised of a source, the proposed FD relay, and a destination. Next, we compare the achievable data rate of the proposed FD relaying system with the achievable data rate of the same system but with the FD relay replaced by an ideal passive intelligent reflecting surface (IRS). Our results show that the proposed relaying system with 2-bit quantized analog phase shifters can significantly outperform the IRS-assisted system.
2021 International Balkan Conference on Communications and Networking (BalkanCom)
IEEE Communications Letters
IEEE Communications Letters
2022 30th Telecommunications Forum (TELFOR)
ITU Journal on Future and Evolving Technologies
Mobile Edge Computing (MEC) has recently emerged as a new communications/computing concept that a... more Mobile Edge Computing (MEC) has recently emerged as a new communications/computing concept that amends the limited computing of IoT devices by completely or partially offloading the computational tasks to the MEC servers at the network edge (typically co-located with the base stations). Because IoT devices are typically power limited, the potential of the MEC is further enhanced by its integration with wireless power transfer technology, especially for those IoT devices with a high duty cycle that requires frequent battery replacement. This paper develops fairness-aware resource allocation schemes for a WPT-assisted MEC system whose Energy Harvesting Users (EHUs) employ either binary or partial offloading. Specifically, the proposed schemes optimize the computational speeds and the energy harvesting and offloading durations of the EHUs with the aim to maximize the minimum of their computed bits (sum of locally and remotely processed bits of each EHU), subject to the RF energy harves...
2019 14th International Conference on Advanced Technologies, Systems and Services in Telecommunications (TELSIKS)
In the literature, wireless powered communication networks (WPCNs) are typically assumed to emplo... more In the literature, wireless powered communication networks (WPCNs) are typically assumed to employ dynamic time division multiple access (TDMA), such that the rate and duration for information transmission of each energy harvesting user (EHU) is adjusted in each TDMA frame. Such implementations are fairly complex, so, in this paper, we propose a simple model for a WPCN employing a static TDMA, where each EHU employs fixed rate transmission over fixed time slot duration. Specifically, we develop a simple communication scheme that maximizes the network throughput by proper selection of the duration of the radio frequency energy broadcasts by the base station (BS), and the optimal information rate and optimal transmission duration of each EHU. The performance of such system depends only on the average gains of the channels between the BS and each EHU, which can be estimated more cost effectively than the instantaneous channel state information.
Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 2021
In this paper, we propose a single RF-chain multiantenna full-duplex (FD) relay built with b-bit ... more In this paper, we propose a single RF-chain multiantenna full-duplex (FD) relay built with b-bit analog phase shifters. Assuming only passive self-interference cancellation at the FD relay, we derive the achievable data rate of a system comprised of a source, the proposed FD relay, and a destination. Next, we compare the achievable data rate of the proposed FD relaying system with the achievable data rate of the same system but with the FD relay replaced by an ideal passive intelligent reflecting surface (IRS). Our results show that the proposed relaying system with 2-bit quantized analog phase shifters can significantly outperform the IRS-assisted system.
2021 International Balkan Conference on Communications and Networking (BalkanCom)
IEEE Communications Letters