A Novel Ultra-broadband, Hybrid High-Low Band Wireless Access

  • Calin D.
  • Kaya A.
  • Viswanathan H.

This paper addresses the design of an ultra-broadband wireless access system, as an alternative to fiber to the home (FTTH) deployments. Hence, the system must be capable of delivering very high data rates to indoor users without the need of deploying fiber to homes. We show that a hybrid wireless ...

Impact of Humans on the Design and Performance of Millimeter Wave Cellular Networks in Stadiums

  • Calin D.
  • Jeffrey G. Andrews
  • Kaya A.
  • Mandar N. Kulkarni

We use 3-D ray tracing to evaluate the performance of millimeter wave (mmWave) cellular in a realistic model of MetLife stadium, NJ, USA. We model thousands of human blockages using the dielectric properties at 28GHz. Using this setup, we contrast the coverage and capacity performance with and without human blockages. ...

Cost-aware fronthaul rate allocation to maximize benefit of multi-user reception in C-RAN

  • Boviz D.
  • Chen C.
  • Yang S.

Aiming throughput enhancement in future mobile networks dense deployment of wireless access points (APs) is intended. Spectral efficiency on the uplink can be improved via joint processing of users located in areas covered by several APs. Thanks to centralized processing of such users offered by Cloud Radio Access Network (C-RAN) ...

Enhanced Split TCP with End-to-End Protocol Semantic over Wireless Networks

  • Calin D.
  • Kim B.
  • Lee I.

The global mobile traffic is exponentially growing and more than 90% of the Internet traffic uses Transmission Control Protocol (TCP) for reliable transmission. However, TCP is known to perform poorly over unreliable wireless networks. One of the promising families of solutions to improve the performance of TCP is centered on ...

On Medium and Long Term Channel Conditions Prediction for Mobile Devices

  • Faucher D.
  • Grinshpun E.
  • Sharma S.
  • Wang X.

With wireless spectrum being a precious commodity, the knowledge of the future wireless channel conditions is very valuable. Channel condition maps enable wireless service providers to identify and fix coverage gaps as they build their networks and deploy a variety of self-optimization technologies. Knowing future channel conditions for an individual ...

A novel joint coding scheme for downlink non-orthogonal multiple access (NOMA)

  • Bo Ai
  • Deshan Miao
  • Fanggang Wang
  • Guoyu Ma
  • Hao G.
  • Xia Chen
  • Xianan Hu
  • Zhuyan Z.

Non-orthogonal multiple access (NOMA) is a promising candidate for future 5G multiple access. Particularly NOMA uses power domain for multiple access and successive interference canceler (SIC) algorithm for multiuser detection (MUD). Different from the current downlink transmission scheme for NOMA, a novel joint coding scheme is proposed in this paper ...

Interference Impact on Coverage and Capacity for Low Power Wide Area IoT Networks

  • Kovacs I.
  • Lauridsen M.
  • Mogensen P.
  • Nguyen H.
  • Sorensen M.
  • Vejlgaard B.

In this paper we analyze and discuss the coverage and capacity of Sigfox and LoRaWAN in a large scale urban environments covering 150 km2 in Northern Denmark. First, the study measures and analyzes interference in the European 868 MHz license free industrial, scientific, and medical band, creating a model for ...

Impact of Mobility on the Reliability Performance of 5G Multi-Connectivity Architectures

  • Awada A.
  • Fettweis G.
  • Ohmann D.
  • Simsek M.
  • Viering I.

The support of mission-critical use cases is an ambitious goal of the upcoming fifth generation of mobile networks. In addition to challenging requirements regarding reliability and latency, particular use cases need to be supported in high mobility scenarios as well. To avoid extensive system simulations and enable studies of very ...

BalCon: A Distributed Elastic SDN Control via Efficient Switch Migration

  • Cello M.
  • Chao H.
  • Marchese M.
  • Walid A.
  • Wilfong G.
  • Xu Y.

Scalability and reliability are among the main concerns in large-scale Software Defined Networking (SDN) application scenarios. A common approach is to use multiple distributed controllers, each managing one static partition of the network. In this paper, we show that dynamic mapping can improve efficiency in managing traffic load variations. We ...

Low Complexity Hybrid Beamforming for Uplink Multiuser mmWave MIMO Systems

  • Yang T.
  • Zhu Y.

This paper considers a low-complexity hybrid beamforming (HBF) for uplink multiuser mmWave MIMO systems. The proposed scheme employs a two-stage beamforming design. In the first stage, the base station (BS) analog beamforming is designed to maximize the th user's signal-to-interference-plusnoise-ratio (SINR) in single-carrier systems and to maximize the sum rate's ...

Lipid Layers on Nanoscale Surface Topography: Stability and Effect on Protein Adsorption

  • Asadauskas S.
  • Beauvais M.
  • El Kirat K.
  • Lambert J.
  • Landoulsi J.
  • Liascukiene I.

Herein, we report the coating of a surface with a random nanoscale topography with a lipid film formed by an anchoring stearic acid (SA) monolayer and phospholipid (DPPC) layers. For this purpose, different procedures were used for phospholipid coating, including adsorption from solution, drop deposition, and spin-coating. Our results reveal ...

Coexistence-aware dynamic channel allocation for 3.5 GHz shared spectrum systems

  • Buddhikot M.
  • Roy S.
  • Ying X.

The paradigm of shared spectrum allows secondary devices to opportunistically access spectrum bands underutilized by primary owners. As the first step, the FCC targeted sharing the 3.5 GHz (3550–3700 MHz) federal spectrum with commercial systems. The proposed rules require a Spectrum Access System to implement a three-tiered spectrum management framework, ...

On Non-parametric Models for Detecting Outages in the Mobile Network

The wireless/cellular communications network is composed of a complex set of interconnected computation units that form the mobile core network. The mobile core network is engineered to be fault tolerant and redundant; small errors that manifest themselves in the network are usually resolved automatically. However, some errors remain latent, and ...

Towards edge-caching for image recognition

  • Drolia U.
  • Gandhi R.
  • Guo K.
  • Narasimhan P.
  • Tan J.

With the available sensors on mobile devices and their improved CPU and storage capability, users expect their devices to recognize the surrounding environment and to provide relevant information and/or content automatically and immediately. For such classes of real-time applications, user perception of performance is key. To enable a truly seamless ...

A 5G Lightweight Connectionless Protocol for Massive Cellular Internet of Things

  • Huang H.
  • Kahn C.
  • Samardzija D.
  • Tavares M.
  • Viswanathan H.

We present a novel protocol for massive cellular Internet of Things (IoT) based on the connectionless access approach. Our solution has very low signaling overhead and is thus very efficient for sporadic short burst traffic applications. Numerical analysis of the capacity achieved by our solution indicates that millions of (IoT) ...

Bubble-wake interactions of a sliding bubble pair and the mechanisms of heat transfer

  • Donnelly B.
  • Murray D.
  • Nolan K.
  • O'Reilly Meehan R.

An experimental investigation is reported for the bubble-wake interactions that occur between an in-line air bubble pair sliding under an inclined surface in quiescent water. Three experimental techniques are utilised, namely time- resolved particle image velocimetry (PIV), high speed video and high speed infrared thermography. These allow for the fluid ...

distributed channel probing and sequential access for ultra dense networks: joint spectrum- and energy-aware design

  • Cai L.
  • Guo H.

Ultra dense network (UDN) with universal resource reuse capability is recognized as a promising technology for 5G. In this paper, we advance a distributed channel probing and sequential access (DISCO-SEA) scheme for UDNs, which enables an autonomous procedure for network expanding by blending receiver-transmitter pairing, interference avoidance, spectrum sharing, power ...

Overlapped Subarray Based Hybrid Beamforming for Millimeter Wave Multiuser Massive MIMO

  • Song N.
  • Sun H.
  • Yang T.

For massive multiple input multiple output systems at millimeter wave (mm Wave) bands, we consider an efficient hybrid array architecture, namely, overlapped subarray (OSA), and develop a Unified Low Rank Sparse (ULoRaS) recovery algorithm for hybrid beamforming in downlink multiuser scenarios. The ULoRaS scheme takes advantage of the transmit-receive coordinated ...

Improving Dense Network Performance Through Centralized Scheduling and Interference Coordination

  • Fernández-Lopez V.
  • Mogensen P.
  • Pedersen K.
  • Soret B.
  • Steiner J.

Dense network deployments comprising small cells pose a series of important challenges when it comes to achieving an efficient resource use and curbing intercell interference in the downlink. This paper examines different techniques to treat these problems in a dynamic way, from the network and the receiver sides. As a ...

PERMIT: Network Slicing for Personalized 5G Mobile Telecommunications

  • Corici M.
  • Flinck H.
  • Mada B.
  • Nakao A.
  • Taleb T.

5G mobile systems are expected to meet different strict requirements beyond the traditional operator use cases. Effectively, to accommodate needs of new industry segments such as healthcare and manufacturing, 5G systems need to accommodate elasticity, flexibility, dynamicity, scalability, manageability, agility, and customization along with different levels of service delivery parameters ...