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.

Practical LTE and Wi-Fi Coexistence Techniques beyond LBT

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

Coexistence with Wi-Fi 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 of time and compared to a threshold. Given the default energy thresholds, the energy sensing range is actually much less than the cell ...

BGA Interconnection Reliability in Mirrored Module Configurations

Interconnection dimensions are becoming more important due to electrical signal timing requirements and stray effects, such as unwanted inductance, leading to increasingly denser packaging. One way to shorten the signal path is to use mirrored structures, where the components are placed on opposite sides of the printed circuit board (PCB). ...

25-Gb/s transmission over 2.5-km SSMF by silicon MRR enhanced 1.55-μm III-V/SOI DML

The use of a micro-ring resonator (MRR) to enhance the modulation extinction ratio and dispersion tolerance of a directly modulated laser (DML) is experimentally investigated with a bit rate of 25 Gb/s as proposed for the next generation data center communications. The investigated system combines a 11-GHz 1.55-μm directly modulated ...

Network Slicing via Function Decomposition and Flexible Network Design

  • Bega D.
  • Doll M.
  • Michalopoulos D.
  • Rost P.
  • Schneider P.
  • Sciancalepore V.

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 ...

An SDR-based Turbo-SIC Implementation: Towards 5G New Radio Advanced Receiver for Uplink Boosting

  • Harman D.
  • Otterbach J.
  • Samardzija D.
  • Tavares M.
  • Zivkovic M.

Significant uplink capacity improvements in next generation 5G wireless networks, especially in enhanced Machine Type Communications (eMTC) for emerging Internet-of-Things (IoT) applications where the large number of users shares the limited band., can be achieved by assigning the same time-frequency resources to several users simultaneously. This requires advanced signal processing ...

Single-Wavelength, Single-Polarization, Single-Photodiode Kramers-Kronig Detection of 440-Gb/s Entropy-Loaded Discrete Multitone Modulation Transmitted over 100-km SSMF

  • A. Mecozzi
  • C. Antonelli
  • Chen X.
  • Cho J.
  • M. Shtaif
  • Sethumadhavan C.
  • Winzer P.

We demonstrate 100-km standard single-mode fibre (SSMF) 1550-nm dispersion-uncompensated transmission and single-photodiode Kramers-Kronig direct detection of 440-Gb/s line rate discrete multitone modulation with entropy- and power-loaded probabilistically shaped subcarriers generated by digital band interleaving

On the Energy Efficiency of Multi-hop Cooperative Relaying Power Line Communication Systems

  • Augustine Ikpehai
  • Bamidele Adebisi
  • Gacanin H.
  • Galymzhan Nauryzbayev
  • Khaled M. Rabie

In this paper, we analyze the energy efficiency performance of multi-hop cooperative relaying power line communication (PLC) systems. In order to further minimize the energy consumption of such systems, we study the performance of incremental decode-and-forward (IDF) relying over the lognormal fading PLC channel contaminated with impulsive noise. For more ...

Multicarrier approaches for high-baudrate optical-fiber transmission systems with a single coherent receiver

  • Compernolle L.
  • He Q.
  • Le S.
  • Nguyen T.
  • Patrice Mégret
  • Wuilpart M.

In this paper, we show the remarkable timing error (TE) and residual chromatic dispersion (CD) tolerance improvements of the filte bank multicarrier (FBMC) over orthogonal frequency division multiplexing (OFDM) for high-baudrate spectral slicing transmitter and single coherent receiver transmissions. For a 512 Gb/s 16 quadrature amplitude modulated (16QAM) spectrum slicing ...

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 ...

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 ...

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 ...

Single-wavelength, single-polarization, single- photodiode kramers-kronig detection of 440-Gb/s entropy-loaded discrete multitone modulation transmitted over 100-km SSMF

  • Antonelli C.
  • Chen X.
  • Cho J.
  • Mecozzi A.
  • Sethumadhavan C.
  • Shtaif M.
  • Winzer P.

We demonstrate 100-km standard single-mode fiber (SSMF) 1550-nm dispersion-uncompensated transmission and single-photodiode Kramers-Kronig direct detection of 440- Gb/s line rate and 279 Gb/s net-data-rate using discrete multitone modulation with entropy- and power-loaded probabilistically shaped subcarriers generated by digital band interleaving.

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

  • Brenot R.
  • Chen Y.
  • De Valicourt G.
  • Debregeas H.
  • Dong P.
  • Earnshaw M.
  • Verdier A.

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 ...

Pilot allocation for multi-cell tdd massive mimo systems

  • Gacanin H.
  • H. Furukawa
  • O. Muta
  • W. Hao

Pilot contamination due to the pilot reuse in adjacent cells is a very serious problem in time-division duplex (TDD) based massive multi-input multiple-output (MIMO) system. Therefore, the pilot-user allocation is significant for improving the performance of the system. In this paper, we formulate the pilot-user allocation optimization problem for maximizing ...

Investigation of Non-Orthogonal Multiple Access Techniques for Future Cellular Networks

  • Ghosh A.
  • Keating R.
  • Ratasuk R.

There is an expected explosion in the number of users which will be connected to future wireless networks with the continued expansion of the Internet of Things. New technologies are needed in order to keep up with this connectivity demand. Non-orthogonal multiple access (NOMA) is one technology which seeks to ...

5G New Radio UL Coverage with Peak Clipping

  • Kaikkonen J.
  • Levanen T.
  • Nielsen S.
  • Pajukoski K.
  • Renfors M.
  • Valkama M.

For the 5G new radio physical layer the CP-OFDM waveform has been chosen as the baseline for communications below 40 GHz. The requirement for multicarrier waveforms used for uplink is to achieve similar coverage as achieved by SC-FDMA in LTE uplink. In this paper, multiple candidate waveforms with enhanced CP-OFDM ...