TinySet-An Access Efficient Self Adjusting Bloom Filter Construction

  • Einziger G.
  • Friedman R.

Bloom filters are a very popular and efficient data structure for approximate set membership queries. However, Bloom filters have several key limitations as they require 44% more space than the lower bound, their operations access multiple memory words, and they do not support removals. This paper presents TinySet, an alternative ...

Outdoor-to-Indoor Empirical Path loss Models: Analysis for Pico and Femto Cells in Street Canyons

  • Castro G.
  • Chizhik D.
  • Feick R.
  • Rodriguez M.
  • Valenzuela R.

The applicability of COST231, WINNER+, ITU-R, and 3GPP urban microcell outdoor-to-indoor path loss prediction models is empirically tested in 100 m radius urban femtocells. The analysis is based on more than 500 link measurements. Considerations not specified in the models such as the inclusion of antenna gains and the effect ...

Modeling and simulation of RSOA with a dual-electrode configuration

  • De Valicourt G.
  • Liu Z.
  • Violas M.
  • Wang H.
  • Wu Q.

Based on the physical model of a bulk reflective semiconductor optical amplifier (RSOA) used as a modulator in radio over fiber (RoF) links, the distributions of carrier density, signal photon density, and amplified spontaneous emission photon density are demonstrated. One of limits in the use of RSOA is the lower ...

Localised Dynamics of Laminar Pulsatile Flow in a Rectangular Channel

  • Blythman R.
  • Jeffers N.
  • Murray D.
  • Persoons T.

The exploitation of flow pulsation in low-Reynolds number micro/minichannel flows is a potentially useful technique for enhancing cooling of high power photonics and electronics devices. Although the corresponding mechanical and thermal problems are inextricably linked, decoupling of the local instantaneous parameters provides insight into underlying mechanisms. Using two-dimensional, two-component particle ...

Virtualized environments, from connectivity to services

  • Barnaghi P.
  • Bertin E.
  • Hofmann M.

5G Network Slicing - Part 2: Algorithms and Practice

  • Banchs A.
  • Capone A.
  • Obana K.
  • Samdanis K.
  • Ulema M.
  • Wright S.

Radio Channel Modeling for UAV Communication Over Cellular Networks

  • Amorim R.
  • Kovacs I.
  • Mogensen P.
  • Nguyen H.
  • Sorensen T.
  • Wigard J.

The main goal of this letter is to obtain models for path loss exponents and shadowing for the radio channel between airborne unmanned aerial vehicles (UAVs) and cellular networks. In this pursuit, field measurements were conducted in live LTE networks at the 800 MHz frequency band, using a commercial UAV. ...

Queryable Kafka: An agile data analytic pipeline for mobile wireless networks

Owing to their promise of delivering real-time decisions, today's streaming analytics platforms are increasingly being used in the communications networks, where the impact of the decisions go beyond sentiment and trend analysis to include real-time detection of security attacks and prediction of network state (i.e., is the network transitioning towards ...

Multi-user reception in 5G Cloud-RAN: a practical design

  • Boviz D.
  • Chen C.
  • Yang S.

Cloud Radio Access Network (C-RAN) is becoming more then ever timely in 5G for dense network deployments, but its design has to be adapted to 5G requirements. To ensure high uplink throughput in cell edge regions affected by inter-cell interference, C-RAN enables to apply Non-Orthogonal Multiple Access (NOMA) techniques among ...

56-Gbps 4-PAM system over nearly 40 km transmission by employing an O-band EML and SOA

  • Chen J.
  • Chen Y.
  • Chuang C.
  • Hong A.
  • Liu J.
  • Nguyen H.
  • Shie B.
  • Wei C.

This work demonstrates a 56-Gbps 4-PAM EML-based transmission system. Using an O-band SOA to increase power budget and FFE/DFE to compensate SOA-induced ISI, 37.8-km transmission is successfully implemented with BER below the FEC limit (2 × 10â?'4)

67.6% Improvement in data rate employing partial transmit sequence for PAPR reduction and volterra filtering in an OFDM long-reach PON

  • Chen J.
  • Chen Y.
  • Chuang C.
  • Hsu C.
  • Liu J.
  • Nguyen H.
  • Wei C.

We applied partial transmit sequence and Volterra filtering to achieve 67.6% improvement in capacity in a high-launch-power 60-km OFDM LR-PON. 61-Gbps capacity and 30-dB loss budget were realized to support 64 ONUs with 0.95 Gbps/ONU.

Content delivery network slicing: QoE and cost awareness

  • Bagaa M.
  • Flinck H.
  • Retal S.
  • Taleb T.

Content Delivery Networks (CDNs) emerged to manage the great amount of content, as well as the transmissions over long distances. In recent years, this concept proves to be a promising solution for emergent enterprises. In this paper, we present a Content Delivery Network as a Service (CDNaaS) platform which can ...

A simplified deterministic channel model for user mobility investigations in 5G networks

  • Awada A.
  • Enqvist A.
  • Lobinger A.
  • Talukdar A.
  • Viering I.

High frequency bands are considered for the fifth generation (5G) mobile networks to handle the continuous increase in the demand for cellular data traffic. However, the propagation conditions in high frequency bands are more challenging than in low frequency bands, making the radio link more susceptible to obstruction. These new ...

Optimizing service replication for mobile delay-sensitive applications in 5G edge network

  • Bagaa M.
  • Farris I.
  • Flick H.
  • Taleb T.

Extending cloud infrastructure to the Network Edge represents a breakthrough to support delay-sensitive applications in next 5G cellular systems. In this context, to enable ultrashort response times, fast relocation of service instances between edge nodes is required to cope with user mobility. To face this issue, proactive service replication is ...

Pilot contamination is not a fundamental asymptotic limitation in massive MIMO

  • Bjornson E.
  • Hoydis J.
  • Sanguinetti L.

Massive MIMO (multiple-input multiple-output) provides great improvements in spectral efficiency over legacy cellular networks, by coherent combining of the signals over a large antenna array and by spatial multiplexing of many users. Since its inception, the coherent interference caused by pilot contamination has been believed to be an impairment that ...

Cache-aided interference management in wireless cellular networks

  • Avestimehr A.
  • Maddah-Ali M.
  • Naderializadeh N.

We consider the problem of interference management in wireless cellular networks with caches at both base stations and receivers and we characterize the degrees-of-freedom (DoF) per cell to within an additive gap of 1 and a multiplicative gap of 2 for all system parameters, under one-shot linear schemes. Our result ...

Assuring virtual network function image integrity and host sealing in Telco cloue

  • Lal S.
  • Oliver I.
  • Ravidas S.
  • Taleb T.

In Telco cloud environment, virtual network functions (VNFs) can be shipped in the form of virtual machine images and hosted over commodity hardware. It is likely that these VNF images will contain highly sensitive data and mission critical network operations. For this reason, these VNF images are prone to malicious ...

How to optimally allocate resources for coded distributed computing?

  • Avestimehr A.
  • Li S.
  • Maddah-Ali M.
  • Yu Q.

To execute cloud computing tasks over a data center hosting hundreds of thousands of server nodes, it is natural to distribute computations across the nodes to take advantage of parallel processing. However, as we allocate more computing resources and further distribute the computations, a large amount of intermediate data must ...

Link scheduling for mmWave WMN backhaul

  • Chen D.
  • Kilpi J.
  • Paananen J.
  • Seppanen K.
  • Suihko T.
  • Wainio P.

A new link scheduling approach for millimeter wave wireless mesh network is presented. The proposed link scheduling solution is designed to work together with a multiple overlapping spanning trees-based routing schemes on a mesh network topology. The link schedule computation will minimize the end-to-end delay along a subset of shortest-hop ...

Double Iterative Waterfilling for Sum Rate Maximization in Multicarrier NOMA Systems

  • Chen C.
  • Chi Wan Sung
  • Marceau Coupechoux
  • Salaun L.
  • Yaru Fu

This paper investigates the subcarrier and power allocation for the downlink of a multicarrier non-orthogonal multiple access (MC-NOMA) system. A three-step algorithm is proposed to deal with the sum rate maximization problem. First, we assume each user could use all the subcarriers simultaneously and apply the synchronous iterative waterfilling algorithm ...