Search results for: Hina Tabassum

Items from 1 to 20 out of 45 results

article

Safety From the Adverse Effects of Cyclooxygenase-2 Inhibitors During Pain and Inflammation, and Platelet Aggregation by Utilizing NADPH Oxidase Inhibitors

Shumaila Aman, Hina Tabassum, Sumbul Shamim

Journal of Pharmacological and Toxicological Methods > 2017 > 88 > P2 > 234-235

article

Decoupled Uplink-Downlink User Association in Multi-Tier Full-Duplex Cellular Networks: A Two-Sided Matching Game

Silvia Sekander, Hina Tabassum, Ekram Hossain

IEEE Transactions on Mobile Computing > 2017 > 16 > 10 > 2778 - 2791

In multi-tier cellular networks, user performance in both the downlink (DL) and uplink (UL) transmissions depend on the transmit powers of the base stations (BSs) in different network tiers, users’ distances, and non-uniform traffic loads of different BSs. In such a network, decoupled UL-DL user association (DUDe), which allows users to associate with different BSs for UL and DL transmissions, can...

chapter

Uplink Vs. Downlink NOMA in Cellular Networks: Challenges and Research Directions

Hina Tabassum, Md. Shipon Ali, Ekram Hossain, Md. Jahangir Hossain, more

2017 IEEE 85th Vehicular Technology Conference (VTC Spring) > 1 - 7

2017 IEEE 85th Vehicular Technology Conference: VTC2017-Spring

Non-orthogonal multiple access (NOMA) is a promising multiple access technique for 5G wireless technology. In this paper, we first discuss the fundamentals of uplink and downlink NOMA transmissions in a cellular system and outline their key distinctions in terms of implementation complexity, detection and decoding at the SIC receiver(s), and the intra-cell and inter-cell interferences. Later, for...

article

Downlink Spectrum Allocation for In-Band and Out-Band Wireless Backhauling of Full-Duplex Small Cells

Uzma Siddique, Hina Tabassum, Ekram Hossain

IEEE Transactions on Communications > 2017 > 65 > 8 > 3538 - 3554

In-band full-duplex (IBFD) backhauling is a potential technique for wireless backhauling of small cells that allows the use of same spectrum for the backhaul and access links of the small cell base stations (SBSs) concurrently, however, at the expense of backhaul interference and self-interference (SI). This paper investigates the problem of optimal access/backhaul spectrum allocation considering...

article

Modeling and Analysis of Uplink Non-Orthogonal Multiple Access in Large-Scale Cellular Networks Using Poisson Cluster Processes

Hina Tabassum, Ekram Hossain, Jahangir Hossain

IEEE Transactions on Communications > 2017 > 65 > 8 > 3555 - 3570

Using the theory of Poisson cluster process (PCP), this paper provides a framework to analyze multi-cell uplink non-orthogonal multiple access (NOMA) systems. Specifically, we characterize the rate coverage probability of an NOMA user who is at rank

$m$

(in terms of the distance from its serving base station) among all users in a cell and the mean rate coverage probability of all users in a cell...

article

Channel-Access-Aware User Association With Interference Coordination in Two-Tier Downlink Cellular Networks

Uzma Siddique, Hina Tabassum, Ekram Hossain, Dong In Kim

IEEE Transactions on Vehicular Technology > 2016 > 65 > 7 > 5579 - 5594

The diverse transmit power levels of base stations (BSs) in a multitier cellular network, on the one hand, lead to an uneven distribution of traffic loads among different BSs when received signal power (RSP)-based user association is used. This causes underutilization of resources at low-power BSs. On the other hand, strong interference from high-power BSs affects downlink transmissions to the users...

article

Analysis of Massive MIMO-Enabled Downlink Wireless Backhauling for Full-Duplex Small Cells

Hina Tabassum, Ahmed Hamdi Sakr, Ekram Hossain

IEEE Transactions on Communications > 2016 > 64 > 6 > 2354 - 2369

Recent advancements in self-interference (SI) cancellation capability of low-power wireless devices motivate in-band full-duplex (FD) wireless backhauling in small cell networks (SCNs). In-band FD wireless backhauling concurrently allows the use of the same frequency spectrum for the backhaul as well as access links of the small cells. In this paper, using tools from stochastic geometry, we develop...

chapter

Spectrum allocation for wireless backhauling of 5G small cells

Uzma Siddique, Hina Tabassum, Ekram Hossain

2016 IEEE International Conference on Communications Workshops (ICC) > 122 - 127

2016 ICC - 2016 IEEE International Conference on Communications Workshops (ICC)

The anticipated massive deployment of the small cells entail wireless backhauling for 5G cellular networks. However, the scarcity of radio frequency (RF) spectrum in the licensed bands is a major limitation which necessitates efficient spectrum planning for backhaul/access links of 5G small cells. This paper investigates the problem of channel assignment in the backhaul/access of small cells. We first...

article

Saddle Point Approximation for Outage Probability Using Cumulant Generating Functions

Sudarshan Guruacharya, Hina Tabassum, Ekram Hossain

IEEE Wireless Communications Letters > 2016 > 5 > 2 > 192 - 195

This letter proposes the use of saddle point approximation (SPA) to evaluate the outage probability of wireless cellular networks. Unlike traditional numerical integration-based approaches, the SPA approach relies on cumulant generating functions (CGFs) and eliminates the need for explicit numerical integration. The approach is generic and can be applied to a wide variety of distributions, given that...

article

Ambient RF energy harvesting in ultra-dense small cell networks: performance and trade-offs

Amin Ghazanfari, Hina Tabassum, Ekram Hossain

IEEE Wireless Communications > 2016 > 23 > 2 > 38 - 45

In order to minimize electric grid power consumption, energy harvesting from ambient RF sources is considered as a promising technique for wireless charging of low-power devices. To illustrate the design considerations of RF-based ambient energy harvesting networks, this article first points out the primary challenges of implementing and operating such networks, including non-deterministic energy...

article

On feasibility of 5G-grade dedicated RF charging technology for wireless-powered wearables

Olga Galinina, Hina Tabassum, Konstantin Mikhaylov, Sergey Andreev, more

IEEE Wireless Communications > 2016 > 23 > 2 > 28 - 37

For decades, wireless energy transfer and harvesting received focused attention in the research community, but with limited practical applications. Recently, with the development of fifth-generation (5G) mobile technology, the concept of dedicated radio-frequency (RF) charging promises to support the growing market of wearable devices. In this work we shed light on the potential of wireless RF power...

article

Integral Approximations for Coverage Probability

Sudarshan Guruacharya, Hina Tabassum, Ekram Hossain

IEEE Wireless Communications Letters > 2016 > 5 > 1 > 24 - 27

This letter gives approximations to an integral appearing in the formula for downlink coverage probability of a typical user in Poisson point process (PPP)-based stochastic geometry frameworks of the form

$\int_0^\infty \exp\{ - (Ax + B x^{\alpha/2}) \} {\rm{d}} x$

. Four different approximations are studied. For systems that are interference-limited or noise-limited, conditions are identified when...

article

Dynamic User Clustering and Power Allocation for Uplink and Downlink Non-Orthogonal Multiple Access (NOMA) Systems

MD Shipon Ali, Hina Tabassum, Ekram Hossain

IEEE Access > 2016 > 4 > 6325 - 6343

Non-orthogonal multiple access (NOMA) has recently been considered as a key enabling technique for 5G cellular systems. In NOMA, by exploiting the channel gain differences, multiple users are multiplexed into transmission power domain and then non-orthogonally scheduled for transmission on the same spectrum resources. Successive interference cancellation (SIC) is then applied at the receivers to decode...

article

Downlink Power Control in Two-Tier Cellular Networks With Energy-Harvesting Small Cells as Stochastic Games

Tran Kien Thuc, Ekram Hossain, Hina Tabassum

IEEE Transactions on Communications > 2015 > 63 > 12 > 5267 - 5282

Energy harvesting in cellular networks is an emerging technique to enhance the sustainability of power-constrained wireless devices. This paper considers the co-channel deployment of a macrocell overlaid with small cells. The small cell base stations (SBSs) harvest energy from environmental sources whereas the macrocell base station (MBS) uses conventional power supply. Given a stochastic energy arrival...

chapter

Matching with externalities for decoupled uplink-downlink user association in full-duplex small cell networks

Silvia Sekander, Hina Tabassum, Ekram Hossain

2015 IEEE International WIE Conference on Electrical and Computer Engineering (WIECON-ECE) > 411 - 414

2015 IEEE International WIE Conference on Electrical and Computer Engineering (WIECON-ECE)

In multi-tier cellular/small cell networks, decoupled uplink-downlink association (DUDe) enables a user to be associated with different base stations (BSs) for uplink (UL) and downlink (DL) transmissions. In this paper, we consider the overall UL and DL rate maximization problem of the users in such a network with a provisioning for decoupled association. In particular, we formulate the UL and DL...

chapter

A Matching Game for Decoupled Uplink-Downlink User Association in Full-Duplex Small Cell Networks

Silvia Sekander, Hina Tabassum, Ekram Hossain

2015 IEEE Globecom Workshops (GC Wkshps) > 1 - 6

2015 IEEE Globecom Workshops (GC Wkshps)

In multi-tier cellular/small cell networks, user performance is largely affected by the varying transmit powers, distances, and non- uniform traffic loads of different BSs in both the downlink (DL) and uplink (UL) directions of transmission. To optimize user performance in such networks, decoupled UL-DL association (DUDe) has recently been investigated. DUDe enables a user to be associated with different...

article

Wireless backhauling of 5G small cells: challenges and solution approaches

Uzma Siddique, Hina Tabassum, Ekram Hossain, Dong In Kim

IEEE Wireless Communications > 2015 > 22 > 5 > 22 - 31

Dense deployment of small cells over traditional macrocells is considered as a key enabling technique for the emerging 5G cellular networks. However, a fundamental challenge is to provide an economical and ubiquitous backhaul connectivity to these small cells. There is a wide range of backhaul solutions that together can address the backhaul challenges of 5G networks. In this context, this article...

article

On the Deployment of Energy Sources in Wireless-Powered Cellular Networks

Hina Tabassum, Ekram Hossain

IEEE Transactions on Communications > 2015 > 63 > 9 > 3391 - 3404

Wireless-powered cellular networks (WPCNs) are currently being investigated to ensure the reliability as well as improved battery lifetime of wireless devices. A WPCN leverages on a centralized base station (BS) that takes care of both wireless information and energy transfer. However, the harvested energy and, in turn, the spectral efficiency of uplink transmission of the users may significantly...

article

On the Spectral Efficiency of Multiuser Scheduling in RF-Powered Uplink Cellular Networks

Hina Tabassum, Ekram Hossain, Md. Jahangir Hossain, Dong In Kim

IEEE Transactions on Wireless Communications > 2015 > 14 > 7 > 3586 - 3600

This paper characterizes the spectral efficiency of an uplink radio frequency (RF)-powered macrocell network considering harvest-then-transmit protocol such that the macrocell users transmit in the uplink while replenishing the energy from their serving base station (BS) in the downlink. Using the theory of order statistics, a tractable mathematical framework is developed to derive the uplink spectral...

article

Cognitive spectrum access in device-to-device-enabled cellular networks

Ahmed Hamdi Sakr, Hina Tabassum, Ekram Hossain, Dong In Kim

IEEE Communications Magazine > 2015 > 53 > 7 > 126 - 133

Cognitive spectrum access (CSA) in in-band D2D-enabled cellular networks is a potential feature that can promote efficient resource utilization and interference management among coexisting cellular and D2D users. In this article, we first outline the challenges in resource allocation posed by the coexistence of cellular and D2D users. Next, we provide a qualitative overview of the existing resource...

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INTERFERENCE (26)
DOWNLINK (17)
UPLINK (16)
SIGNAL TO NOISE RATIO (12)
WIRELESS COMMUNICATION (12)
FADING (11)
POWER CONTROL (8)
MACROCELL NETWORKS (7)
SILICON (6)
5G CELLULAR (5)
RADIO FREQUENCY (5)
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5G MOBILE COMMUNICATION (4)
ENERGY HARVESTING (4)
GAMES (4)
OFDMA (4)
RECEIVERS (4)
SMALL CELLS (4)
BASE STATIONS (3)
HIGH DEFINITION VIDEO (3)
INTERFERENCE STATISTICS (3)
MEASUREMENT (3)
MOBILE COMPUTING (3)
NOMA (3)
RAYLEIGH CHANNELS (3)
RELAYS (3)
SCHEDULING (3)
SELF-BACKHAULING (3)
SELF-INTERFERENCE (3)
SHADOW MAPPING (3)
SILICON CARBIDE (3)
STOCHASTIC PROCESSES (3)
ACCURACY (2)
ANTENNAS (2)
AREA SPECTRAL EFFICIENCY (2)
BACKHAUL INTERFERENCE (2)
BATTERIES (2)
CHANNEL ACCESS PROBABILITY (2)
CHANNEL ALLOCATION (2)
CHANNEL CAPACITY (2)
ENERGY EFFICIENCY (2)
ERGODIC CAPACITY (2)
FEMTOCELL NETWORKS (2)
FEMTOCELLS (2)
GENERALIZED FADING CHANNELS (2)
HIGHER ORDER STATISTICS (2)
MGF (2)
MOBILE COMMUNICATION (2)
MULTI-CELL (2)
MULTIHOP TRANSMISSION (2)
POWER ALLOCATION (2)
RESOURCE ALLOCATION (2)
ROUND ROBIN (2)
SIMULATION (2)
SPECTRAL EFFICIENCY (2)
TRANSMITTING ANTENNAS (2)
TWO-TIER CELLULAR NETWORKS (2)
UNIVERSAL CHANNEL REUSE (2)
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AMPLIFY-AND-FORWARD (AF) TRANSMISSION (1)
AMPLIFY-AND-FORWARD TRANSMISSION (1)
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ATTENUATION (1)
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CAPACITY (1)
CARBON EMISSIONS (1)
CELL-EDGE MOBILE USERS (1)
CELL-ON-EDGE (COE) (1)
CELLULAR (1)
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DOWNLINK USER ASSOCIATION (1)
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FULLDUPLEX (1)
GENERALIZED FADING CHANNELS AND INTERFERENCE REDUCTION (1)
GENERALIZED-K (1)
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INFONA - science communication portal

Search results for: Hina Tabassum

Safety From the Adverse Effects of Cyclooxygenase-2 Inhibitors During Pain and Inflammation, and Platelet Aggregation by Utilizing NADPH Oxidase Inhibitors

Decoupled Uplink-Downlink User Association in Multi-Tier Full-Duplex Cellular Networks: A Two-Sided Matching Game

Uplink Vs. Downlink NOMA in Cellular Networks: Challenges and Research Directions

Downlink Spectrum Allocation for In-Band and Out-Band Wireless Backhauling of Full-Duplex Small Cells

Modeling and Analysis of Uplink Non-Orthogonal Multiple Access in Large-Scale Cellular Networks Using Poisson Cluster Processes

Channel-Access-Aware User Association With Interference Coordination in Two-Tier Downlink Cellular Networks

Analysis of Massive MIMO-Enabled Downlink Wireless Backhauling for Full-Duplex Small Cells

Spectrum allocation for wireless backhauling of 5G small cells

Saddle Point Approximation for Outage Probability Using Cumulant Generating Functions

Ambient RF energy harvesting in ultra-dense small cell networks: performance and trade-offs

On feasibility of 5G-grade dedicated RF charging technology for wireless-powered wearables

Integral Approximations for Coverage Probability

Dynamic User Clustering and Power Allocation for Uplink and Downlink Non-Orthogonal Multiple Access (NOMA) Systems

Downlink Power Control in Two-Tier Cellular Networks With Energy-Harvesting Small Cells as Stochastic Games

Matching with externalities for decoupled uplink-downlink user association in full-duplex small cell networks

A Matching Game for Decoupled Uplink-Downlink User Association in Full-Duplex Small Cell Networks

Wireless backhauling of 5G small cells: challenges and solution approaches

On the Deployment of Energy Sources in Wireless-Powered Cellular Networks

On the Spectral Efficiency of Multiuser Scheduling in RF-Powered Uplink Cellular Networks

Cognitive spectrum access in device-to-device-enabled cellular networks

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