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.

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

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.

32-degree OXC with very low add/drop contention

This study reports a colorless/directionless wavelength routing Optical Cross-Connect (OXC) based on multicast switch partially equipped with variable splitters, to achieve a 32-degree OXC with negligible add/drop contention probability and still with reasonable intermediate amplification.

Impact of Software Defined Contention in OXC at network level

This study quantifies how software defined contention influences the number of MCS-based add/drop stages needed to serve a given set of connections, over 2 distinct WDM network topologies.

Numerical Investigation and Scaling Rules for the Estimation of Nonlinear Interference Variability of Dispersion Managed and Unmanaged Systems in Presence of PMD and Kerr Effects

  • Fazel S.
  • Frignac Y.
  • Ramantanis P.
  • Rossi N.

We estimate the Kerr nonlinear noise variance for WDM-PDM QPSK links and its variability in presence of PMD. Results specify rules giving the PMD-based NLI statistics and its evolution with distance for both legacy and recent coherent link designs. Introduction Prediction of Quality of Transmission (QoT) has been actively investigated, ...

Duobinary IQ Modulation Schemes for C- and O-band PAM4 Direct Detect Systems

  • Buchali F.
  • Buelow H.
  • Chagnon M.
  • Dischler R.
  • Eriksson T.
  • Stephan Ten Brink

We present two novel modulation schemes for PAM4 direct detect systems employing duobinary signals as least and most significant bit. One format, designed for C-band, is experimentally demonstrated at 70 GBaud. The other, for O-band, is compared to conventional PAM4.

Achieving Near Maximum Ratio Combining Diversity Gains With Directive Antennas

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

We present an empirically based comparison of the effectiveness of spatial and angular diversity systems in outdoor-to-indoor fixed wireless links. We concentrate on the simple to implement, single RF-chain selection diversity systems. We find that for such systems, angular diversity very significantly outperforms spatial diversity using comparatively sized arrays. This ...

Fully monolithic integrated silicon photonics slave transceiver for short-reach network

  • Chen Y.
  • De Valicourt G.
  • Dong P.
  • Kakande J.
  • Sinsky J.
  • Tkach R.

We demonstrate an ultra-compact monolithic integrated silicon-based slave transceiver integrating a D-BPSK receiver and a polarization insensitive reflective modulator. We successfully achieved 25 Gbit/s OOK-NRZ modulation for the upstream and 25 Gbit/s D-BPSK detection for the downstream as well as transmission over the full C-band and few km.

Distributed Transmission and Spatially-Coupled Coding in Multi-Point to Point Networks

  • Buchali F.
  • Eriksson T.
  • Gebhard U.
  • Schmalen L.

We investigate the performance of coded modulation for multi-hop regenerative optical networks. We analyze various simplifications to compute LLRs, compute the achievable rates and show how to optimize distributed spatially coupled FEC schemes.