Delay Comparison of Delivery and Coding Policies in Data Clusters

  • Baccelli F.
  • Bouillard A.
  • Shah V.

A key function of cloud infrastructure is to store and deliver diverse files, e.g., scientific datasets, social network information, videos, etc. In such systems, for the purpose of fast and reliable delivery, files are divided into chunks, replicated or erasure-coded, and disseminated across servers. It is neither known in general ...

Evolution of Social Power for Opinion Dynamics Networks

  • Iglesias Rey S.
  • Silva A.
  • Valenzuela P.

This paper studies the evolution of interpersonal influences in a group as they discuss a sequence of issues following a particular opinion dynamics model. In this work, we propose a general opinion dynamics model and we extend it to the evolution of influence networks using the model of reflected appraisal ...

Spatial mean-field limits for CSMA networks

  • Borst S.
  • Cecchi F.
  • Van Leeuwaarden J.
  • Whiting P.

Random-access algorithms such as the CSMA protocol provide a popular mechanism for distributed medium access control in large-scale wireless networks. Mean-field analysis has emerged as a convenient approach to obtain tractable performance estimates in such networks, but a critical limitation of the classical set-up is that all nodes are assumed ...

Coded fourier transform

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

We consider the problem of computing the Fourier transform of high-dimensional vectors, distributedly over a cluster of machines consisting of a master node and multiple worker nodes, where the worker nodes can only store and process a fraction of the inputs. We show that by exploiting the algebraic structure of ...

Compression-Based Compressed Sensing

  • Erkip E.
  • Jalali S.
  • Poor H.
  • Rezagah F.

Modern compression codes exploit signals’ complex structures to encode them very efficiently. On the other hand, compressed sensing algorithms recover “structured” signals from their under-determined set of linear measurements. Currently, there is a noticeable gap between the types of structures used in the area of compressed sensing and those employed ...

Proactive Fiber Break Detection Enabled by In-Service Coherent Transceiver

  • Boitier F.
  • Chavarria Valenzuela L.
  • Dutisseuil E.
  • Lemaire V.
  • Pesic J.

we demonstrate on a real-time PDM-QPSK receiver coupled with trained learning machine that digital signal processing used in coherent technologies enable a concurrent monitoring of mechanical events occurring on optical fiber enabling proactive fiber break detection on deployed optical networks.

Hybrid Resource Allocation for Millimeter-Wave NOMA

  • António Morgado
  • Christos Politis
  • Gacanin H.
  • Jonathan Rodriguez
  • Kazi Mohammed Saidul Huq

The ever-increasing demand for data traffic for future wireless systems poses challenging requirements for 5G wireless communications, such as high spectral efficiency, better interference management, and extensive connectivity. These challenges open the possibility to use non-orthogonal multiple access (NOMA) schemes in future radio access networks. In these schemes, the users ...

Bit- and Power-Loading-A Comparative Study on Maximizing the Capacity of RSOA Based Colorless DMT Transmitters

  • Bonjour R.
  • Brenot R.
  • Gebrewold S.
  • Hillerkuss D.
  • Leuthold J.

We present a comparative study of the capacity increase brought by bit- and power-loading discrete multi-tone (DMT) modulation for low-cost colorless transmitters. Three interesting reflective semiconductor optical amplifier (RSOA) based colorless transmitter configurations are compared: First, an amplified spontaneous emission (ASE) spectrum-sliced source; second, a self-seeded RSOA fiber cavity laser ...

A theoretical analysis of buffer occupancy for Intermittently-Connected Networks

  • Boero L.
  • Cello M.
  • Gnecco G.
  • Marchese M.
  • Patrone F.
  • Sanguineti M.

Network congestion is a well-known problem that may heavily affect the overall network performance. Congestion control approaches in Intermittently-Connected Networks (ICNs) differ from those used in classical networks, since the assumptions of ``universal connectivity{''} of the nodes and ``global information{''} about the network do not hold. In this paper, an ...

Practical LTE and WiFi Coexistence Techniques Beyond LBT

  • Khawer M.
  • Ling J.
  • Lopez-Perez D.

Coexistence with WiFi is the key issue for unlicensed band LTE. The main coexistence mechanism is listen-before-talk, whereby radio frequency energy is sensed over a short period and compared to a threshold. Given the default energy thresholds, the energy sensing range is much less than the cell range. Either technology ...

MOBILE BANDWIDTH IMPROVEMENT TECHNIQUES

  • Gurbani V.
  • Loreto S.
  • Subramanyan R.

BEHAVIOR RECOGNITION BASED ON WI-FI CSI : PART 1

  • Chen Y.
  • Guo B.
  • Lane N.
  • Liu Y.
  • Yu Z.

Physical-Layer Security With Full-Duplex Transceivers and Multiuser Receiver at Eve

  • Ansari I.
  • Mahmood N.
  • Mogensen P.
  • Popovski Petar
  • Qaraqe K.

Full- duplex communication enables simultaneous transmission from both ends of a communication link, thereby promising significant performance gains. Generally, it has been shown that the throughput and delay gains of full-duplex communication are somewhat limited in realistic network settings, leading researchers to study other possible applications that can accord higher ...

Organic visible light communications: Methods to achieve 10 Mb/s

  • Bausi F.
  • Cacialli F.
  • Darwazeh I.
  • Ghassemlooy Z.
  • Haigh P.
  • Le Minh H.
  • Le S.

In this review, we summarise methods towards achieving 10 Mb/s connectivity for visible light communications links utilising organic polymer based light-emitting diodes as the transmitter. We present two different methods; on-off keying supported by least mean squares equalisation and orthogonal frequency division multiplexing without equalisation.

Timing mismatch tolerance of 16QAM OFDM based spectrum slicing optical transmission systems

  • Le S.
  • Megret P.
  • Nguyen T.
  • Wuilpart M.

We propose an effective synchronization and digital signal processing scheme for OFDM spectrum slicing transmissions in the presence of a large timing mismatch. Without loss of generality, a 76.8 Gbaud DP-16QAM OFDM three-slice spectrum slicing system was considered.

Integrated ultra-wide band wavelength-tunable hybrid external cavity silicon-based laser

We demonstrate two novel hybrid lasers with the same III-V gain medium. An hybrid III-V/Si laser and its III-V/SiO2 counterpart exhibit high fiber-coupled output power without booster SOA (up to +13 dBm for III-V/Si and +10 dBm for III-V/SiO2) and a record tuning range (respectively 95 nm and 66 nm) ...

Enforcing Users Constraints In Dynamic Software-Defined Networks Of Devices

  • Boussard M.
  • Bui D.
  • Peloso P.

Paper to Netsoft 2016 detailing the policies defined for multi-tenants sharing of devices

Quality of experience-aware enhanced inter-cell interference coordination for self organized HetNet

  • Morel M.
  • Randriamasy S.

Fifth-generation (5G) mobile networks are geared to support future services such as enhanced Mobile BroadBand. They already face dramatic data traffic increase mainly due to the generalized demand by mobile consumers for Full High Definition/High Definition (Full HD/HD) video services. The most viable solution to solve this problem is to ...

Applying Neural Networks in Optical Communication Systems: Possible Pitfalls

  • Buelow H.
  • Eriksson T.
  • Leven A.

We investigate the risk of overestimating the performance gain when applying neural network based receivers in systems with pseudo random bit sequences or with limited memory depths, resulting in repeated short patterns. We show that with such sequences, a large artificial gain can be obtained which comes from pattern prediction ...

On the Bit Error Rate of Optical Transmission Systems Corrupted by Bivariate Additive White Gaussian Noise

  • Bigo S.
  • Delezoide C.
  • Essiambre R.
  • Frignac Y.
  • Jenneve P.
  • Layec P.
  • Ramantanis P.

We derive in integral form the exact Bit Error Probability for QPSK constellations corrupted by elliptic AWGN. We show that for an in-phase/quadrature noise the performance only depends on the overall Signal to Noise Ratio and not on noise ellipticity.