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Maxantalet träffar du kan exportera från sökgränssnittet är 250. Vid större uttag använd dig av utsökningar.
  • 251. Hanson, M
    et al.
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Interaction effects in the dynamic response of magnetic liquids1991Ingår i: J. Magn. Magn. Mat., Vol. 101, s. 45-Artikel i tidskrift (Refereegranskat)
  • 252. Hanson, M
    et al.
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Marup, S
    Comment on "Macroscopic resonant tunneling of magnetization in ferretin"1998Ingår i: Phys. Rev. Lett., Vol. 81, nr 3, s. 735-Artikel i tidskrift (Refereegranskat)
  • 253. Hanson, M
    et al.
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Marup, S
    The influence of magnetic anisotropy on the magnetization of small ferromagnetic particles1993Ingår i: Journal of Phys.: Condens. Matter., Vol. 5, s. 725-Artikel i tidskrift (Refereegranskat)
  • 254. Hanson, M
    et al.
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Marup, S
    Zero-field cooled magnetization of amorphous Fe1-xCx particles - field dependence of the maximum1995Ingår i: Journal of Physics: Condensed Matter, Vol. 7, s. 9263-Artikel i tidskrift (Refereegranskat)
  • 255. Hanson, M
    et al.
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Nilsson, B
    Isberg, P
    Wäppling, R
    Magnetic properties of two-dimensionell arrays of epitaxial Fe (001) submicron particles1999Ingår i: J. of Appl. Phys., Vol. 85, nr 5, s. 2799-Artikel i tidskrift (Refereegranskat)
  • 256. Hanson, M
    et al.
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Nilsson, B
    Svedberg, E
    Magnetic properties of epitaxial Ni (001) films sub-micron particles,2001Ingår i: JMMM, Vol. 236, s. 139-50Artikel i tidskrift (Refereegranskat)
  • 257. Hanson, M
    et al.
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Pedersen, MS
    Marup, S
    The influence of particle size interactions on the magnetization susceptibility of nanometre-size particles1995Ingår i: Journal of Physics: Condensed Matter, Vol. 7, s. 9269-Artikel i tidskrift (Refereegranskat)
  • 258. Hansryd, J
    et al.
    Andrekson, P A
    Westlund, M
    Li, J
    RISE., Swedish ICT, Acreo.
    Hedekvist, P O
    Fiber-based optical parametric amplifiers their applications2002Ingår i: IEEE Journal of Selected Topics in Quantum Electronics, Vol. 8Artikel i tidskrift (Refereegranskat)
  • 259. Haunstein, H
    et al.
    Schupke, DA
    Duhovnikov, S
    Lehmann, G
    Stavdas, A
    Gunkel, M
    Martensson, J
    RISE., Swedish ICT, Acreo.
    Lord, A
    Integrated design operation of a transparent optical network: a systematic approach to include physical layer awareness cost function2007Ingår i: IEEE Communications Magazine, Vol. 45, s. 40-47Artikel i tidskrift (Refereegranskat)
  • 260. He, S
    et al.
    Popov, M
    RISE., Swedish ICT, Acreo.
    Qiu, M
    Liao, Z
    Simovski, C
    Explicit formulas for obtaining the radiation characteristics of an antenna based on a three-dimensional metallic photonic bandgap structure2001Ingår i: Microwave Optical Technology Letter, Vol. 29, nr 6, s. 376-Artikel i tidskrift (Refereegranskat)
  • 261. He, S
    et al.
    Popov, M
    RISE., Swedish ICT, Acreo.
    Qiu, M
    Simovski, C
    An explicit method for the analysis of guided waves in a line defect channel in a photonic crystal2000Ingår i: Microwave Optical Technology Letters, Vol. 25, nr 4, s. 236-Artikel i tidskrift (Refereegranskat)
  • 262. He, S
    et al.
    Popov, M
    RISE., Swedish ICT, Acreo.
    Qiu, M
    Simovski, C
    The influence of the dielectric-air interface on the radiation pattern of an antenna in a metallic photonics bandgap structure in a dielectric host medium2000Ingår i: Microwave Optical Technology Letters, Vol. 26, nr 6, s. 367-Artikel i tidskrift (Refereegranskat)
  • 263. He, S
    et al.
    Simovski, C
    Popov, M
    RISE., Swedish ICT, Acreo.
    An explicit efficient method for obtaining the radiation characteristics of wire antennas in metallic photonic bandgap structures2000Ingår i: Microwave Optical Technology Letters, Vol. 26, nr 2, s. 67-Artikel i tidskrift (Refereegranskat)
  • 264.
    Helander, P
    RISE., Swedish ICT, Acreo.
    Measurement of fictive temperature of silica glass optical fibers2004Ingår i: Journal of Materials Science, Vol. 39, nr 11, s. 3799-800Artikel i tidskrift (Refereegranskat)
  • 265.
    Helander, P
    RISE., Swedish ICT, Acreo.
    Practical aspects on measuring refractive index profiles of non-circular fiberoptic preforms2005Ingår i: Measurement Science Technology, Vol. 16, s. 628-32Artikel i tidskrift (Refereegranskat)
  • 266. Hellsing, M
    et al.
    Fokine, M
    Claesson, A
    RISE., Swedish ICT, Acreo.
    Nilsson, L-E
    Margulis, W
    RISE., Swedish ICT, Acreo.
    Time-of-flight secondary ion mass spectrometry imaging of dopant diffusion in optical fiber2003Ingår i: Applied Surface Science, ISSN 0169-4332, E-ISSN 1873-5584, Vol. 203-204, s. 3458-61Artikel i tidskrift (Refereegranskat)
  • 267. Hellström, S
    et al.
    Chen, Z-H
     Fu, Y
    Qiu, M
    Soltanmoradi, R
    Wang, Q
    RISE., Swedish ICT, Acreo.
    Andersson, J Y
    RISE., Swedish ICT, Viktoria.
    Increased photocurrent in quantum dot infrared photodetector by subwavelength hole array in metal thin film2010Ingår i: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 96, s. 231110-Artikel i tidskrift (Refereegranskat)
  • 268. Hendriksen, PV
    et al.
    Oxborrow, CA
    Linderoth, S
    Marup, S
    Hanson, M
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Badker, F
    Davies, K
    Swells, SW
    Particle interaction effects in systems of ultrafine iron oxide particles1993Ingår i: Nucl. Instrum. Meth. Phys. Res., Vol. 876, s. 138-Artikel i tidskrift (Refereegranskat)
  • 269. Herlogsson, L
    et al.
    Crispin, X
    Robinson, N D
    Sandberg, M
    RISE., Swedish ICT, Acreo.
    Hagel, O
    Gustafsson, G
    RISE., Swedish ICT, Acreo.
    Berggren, M
    Low-Voltage Polymer Field-Effect Transistors Gated Via a Proton Conductor2007Ingår i: Advanced Materials, ISSN 0935-9648, E-ISSN 1521-4095, Vol. 19, nr 1, s. 97-Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Low operating voltages for p-channel organic field-effect transistors (OFETs) can be achieved by using an electrolyte as the gate insulator. However, mobile anions in the electrolyte can lead to undesired electrochemistry in the channel. In order to avoid this, a polyanionic electrolyte is used as the gate insulator. The resulting OFET has operating voltages of less than 1€‰V (see figure) shows fast switching (less than 0.3€‰ms) in ambient atmosphere._x000D_

  • 270.
    Hermann, David
    et al.
    Volvo Car Corporation AB, Sweden.
    Djupsjöbacka, Anders
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Andrén, Börje
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Brunnström, Kjell
    RISE - Research Institutes of Sweden, ICT, Acreo. Mid Sweden University, Sweden.
    Rydell, Niclas
    TCO Development AB, Sweden.
    Display panel certification system for the vehicle industry2017Ingår i: Digest of Technical Papers - SID International Symposium, 2017, Vol. 48, nr 1, s. 471-474Konferensbidrag (Refereegranskat)
    Abstract [en]

    The ever-increasing need for displaying in-vehicle visual information in a non-distracting way requires a high visual performance of automotive displays. For their procurement, deep technical and supply-chain knowledge is required. Therefore, based on our comparisons of in-vehicle and laboratory visual-performance measurements, we propose a certification system for automotive display panels.

  • 271. Hey, R 
    et al.
    Noharet, B 
    RISE., Swedish ICT, Acreo.
    Sjöberg, H 
    Internet remote-controlled optical correlator based on 256x256 FLC spatial light modulators1999Ingår i: J. Opt. A: Pure Appl. Opt., Vol. 1, s. 307-Artikel i tidskrift (Refereegranskat)
  • 272. Hllstig, E
    et al.
    Åhgren, J
    Allard, L
    Sjöqvist, L
    Engström, D
    Hård, S
    Agren, D
    Junique, S
    Wang, Q
    RISE., Swedish ICT, Acreo.
    Noharet, B
    Retrocommunication utilizing electroabsorption modulators non-mechanical beam steering2005Ingår i: Optical Engineering, Vol. 44, nr 4Artikel i tidskrift (Refereegranskat)
  • 273. Hofmann, U G
    et al.
    Bär, M
    Detemple, P
    Kindlundh, M
    RISE., Swedish ICT, Acreo.
    Norlin, P
    RISE., Swedish ICT, Acreo.
    Acute multisite recording probes for neurons in mice men2004Ingår i: MST News, Vol. 4, nr 1, s. 14-Artikel i tidskrift (Refereegranskat)
  • 274.
    Holm, J
    RISE., Swedish ICT, Acreo.
    A fluorescence detection selection device for DNA-molecules bound to microspheres1999Ingår i: Nucleosides & Nucleotide, Vol. 16, nr 5Artikel i tidskrift (Refereegranskat)
  • 275. Holm, J
    et al.
    Ahlfeldt, H
    Svensson, M
    RISE., Swedish ICT, Acreo.
    Vieider, C
    Through-etched Silicon Carriers for Passive Alignment of Optical Fibers to Surface-Active Optoelectronic Components2000Ingår i: Sensors and Actuators A-Physical, ISSN 0924-4247, E-ISSN 1873-3069, Vol. 82, nr 1, s. 245-Artikel i tidskrift (Refereegranskat)
  • 276.
    Hong, Xuexhi
    et al.
    KTH Royal Institute of Technology, Sweden.
    Zhang, Lu
    KTH Royal Institute of Technology, Sweden.
    Pang, Xiaodan
    KTH Royal Institute of Technology, Sweden.
    Ozolins, Oskars
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Udalcovs, Aleksejs
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Guo, Changjian
    South China Normal University, China.
    Nordwall, Fredrik
    Tektronix AB, Sweden.
    Engenhardt, Klaus M.
    Tektronix GmbH, Germany.
    Kakkar, Aditya
    KTH Royal Institute of Technology, Sweden.
    Navarro, Jaime Rodrigo
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Schatz, Richard
    KTH Royal Institute of Technology, Sweden.
    Westergren, Urban
    KTH Royal Institute of Technology, Sweden.
    Jacobsen, Gunnar
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Popov, Sergei
    KTH Royal Institute of Technology, Sweden.
    Xiao, Shilin
    Shanghai Jiao Tong University, China.
    Chen, Jiajia
    KTH Royal Institute of Technology, Sweden.
    200-Gbps DMT Transmission over 1.6-km SSMF with A Single EML/DAC/PD for Optical Interconnects at C-Band2017Ingår i: European Conference on Optical Communication, ECOC, 2017Konferensbidrag (Refereegranskat)
    Abstract [en]

    We report on the first experimental demonstration of 200-Gbps (net rate 166.7-Gbps) 1.55-μm DMT IMDD transmission over 1.6 km fiber using a single monolithically-integrated-EML, DAC and photodiode, achieving an effective electrical spectrum efficiency of 4.93 bit/s/Hz. © 2017 IEEE.

  • 277.
    Hong, Xuezhi
    et al.
    KTH Royal Institute of Technology, Sweden.
    Ozolins, Oskars
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Guo, Changjian
    South China Normal University, China.
    Pang, Xiaodan
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Zhang, Junwei
    South China Normal University, China.
    Navarro, Jaime Rodrigo
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Kakkar, Aditya
    KTH Royal Institute of Technology, Sweden.
    Schatz, Richard
    KTH Royal Institute of Technology, Sweden.
    Westergren, Urban
    KTH Royal Institute of Technology, Sweden.
    Jacobsen, Gunnar
    KTH Royal Institute of Technology, Sweden.
    Popov, Sergei
    KTH Royal Institute of Technology, Sweden.
    Chen, Jiajia
    KTH Royal Institute of Technology, Sweden.
    1.55-jnm EML-based DMT transmission with nonlinearity-aware time domain super-nyquist image induced aliasing2017Ingår i: 2017 Optical Fiber Communications Conference and Exhibition, OFC 2017 - Proceedings, 2017Konferensbidrag (Refereegranskat)
    Abstract [en]

    We experimentally demonstrate a DMT transmission system with 1.55-μm EML using nonlinearity-aware time domain super-Nyquist image induced aliasing. Compared with linear equalization, the capacity is improved by ∼16.8%(33.1%) with proposed method for 4(40) km transmission.

  • 278.
    Hultin, Olof
    et al.
    Lund University, Sweden.
    Otnes, Gautne
    Lund University, Sweden.
    Samuelson, Lars
    Lund University, Sweden.
    Storm, Karin
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Simplifying Nanowire Hall Effect Characterization by Using a Three-Probe Device Design2017Ingår i: Nano letters (Print), ISSN 1530-6984, E-ISSN 1530-6992, Vol. 17, nr 2, s. 1121-1126Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Electrical characterization of nanowires is a time-consuming and challenging task due to the complexity of single nanowire device fabrication and the difficulty in interpreting the measurements. We present a method to measure Hall effect in nanowires using a three-probe device that is simpler to fabricate than previous four-probe nanowire Hall devices and allows characterization of nanowires with smaller diameter. Extraction of charge carrier concentration from the three-probe measurements using an analytical model is discussed and compared to simulations. The validity of the method is experimentally verified by a comparison between results obtained with the three-probe method and results obtained using four-probe nanowire Hall measurements. In addition, a nanowire with a diameter of only 65 nm is characterized to demonstrate the capabilities of the method. The three-probe Hall effect method offers a relatively fast and simple, yet accurate way to quantify the charge carrier concentration in nanowires and has the potential to become a standard characterization technique for nanowires.

  • 279.
    Huss, Jessica C.
    et al.
    Max-Planck Institute of Colloids and Interfaces, Germany.
    Schoeppler, Vanesa
    Max-Planck Institute of Colloids and Interfaces, Germany ; Technische Universität Dresden, Germany.
    Merritt, David J.
    Kings Park and Botanic Garden, Australia ; The University of Western Australia, Australia.
    Best, Christine
    Kings Park and Botanic Garden, Australia ; The University of Western Australia, Australia.
    Maire, Eric
    University of Lyon, France.
    Adrien, Jerome
    University of Lyon, France.
    Spaeker, Oliver
    Max-Planck Institute of Colloids and Interfaces, Germany.
    Janssen, Nils
    Max-Planck Institute of Colloids and Interfaces, Germany.
    Gladisch, Johannes
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Gierlinger, Notburga
    University of Natural Resources and Life Science (BOKU), Austria.
    Miller, Ben P.
    Kings Park and Botanic Garden, Australia ; The University of Western Australia, Australia.
    Fratzl, Peter
    Max-Planck Institute of Colloids and Interfaces, Germany.
    Eder, Michaela
    Max-Planck Institute of Colloids and Interfaces, Germany.
    Climate-Dependent Heat-Triggered Opening Mechanism of Banksia Seed Pods2018Ingår i: Advanced Science, ISSN 2198-3844, Vol. 5, nr 1, artikel-id 1700572Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Heat-triggered fruit opening and delayed release of mature seeds are widespread among plants in fire-prone ecosystems. Here, the material characteristics of the seed-containing follicles of Banksia attenuata (Proteaceae), which open in response to heat frequently caused by fire, are investigated. Material analysis reveals that long-term dimensional stability and opening temperatures of follicles collected across an environmental gradient increase as habitats become drier, hotter, and more fire prone. A gradual increase in the biaxial curvature of the hygroscopic valves provides the follicles in the driest region with the highest flexural rigidity. The irreversible deformation of the valves for opening is enabled via a temperature-dependent reduction of the elastic modulus of the innermost tissue layer, which then allows releasing the stresses previously generated by shrinkage of the fiber bundles in the adjacent layer during follicle drying. These findings illustrate the level of sophistication by which this species optimizes its fruit opening mechanism over a large distribution range with varying environmental conditions, and may not only have great relevance for developing biomimetic actuators, but also for elucidating the species' capacity to cope with climatic changes.

  • 280. Huyang, G
    et al.
    Canning, J
    Aslund, M-L
    Naqshbandi, M
    Gibson, B
    Petermann, I
    RISE., Swedish ICT, Acreo.
    Stocks, D
    Crossley, M-J
    Porphyrin doped sol-gel lined structured optical fibres for local remote sensing2011Ingår i: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 36, nr 11, s. 1975-Artikel i tidskrift (Refereegranskat)
  • 281. Huyang, G
    et al.
    Petermann, I
    RISE., Swedish ICT, Acreo.
    Canning, J
    Naqshbandi, M
    Crossley, MJ
    Characterisation functionalisation of cold-processed titania sol-gel layers on silica silicate surfaces2012Ingår i: Optical Materials Express, Vol. 2, nr 2, s. 222-7Artikel i tidskrift (Refereegranskat)
  • 282.
    Hyllander, G.
    et al.
    Loussavaara-Kiirunavaara AB (LKAB).
    Ökvist, Lena Sundqvist
    Swerea Mefos AB.
    Malmberg, David
    RISE, Swerea, Swerea MEFOS AB.
    Eriksson, Johan
    RISE, Swerea, Swerea MEFOS AB.
    Olsson, E.
    SSAB EMEA AB.
    Zetterlund, E.
    Acreo AB.
    Tarasenko, O.
    Acreo AB.
    Innovative measurement technique for raceway monitoring2012Ingår i: 6th Int. Congress on the Science and Technology of Ironmaking 2012, ICSTI 2012 - Including Proceedings from the 42nd Ironmaking and Raw Materials Seminar, and the 13th Brazilian Symp. on Iron Ore, 2012, Vol. 3, s. 1732-1743Konferensbidrag (Refereegranskat)
    Abstract [en]

    When raceway conditions are changed, e.g blast parameters or selection of injection material, additional measurements and monitoring of raceway can support evaluation of the effects on raceway conditions. Two types of measurement methods have been tested during injection trials with BF flue dust at the SSAB EMEA BF in Oxelösund and the LKAB Experimental Blast Furnace (EBF®). The raceway depth was measured using microwave technique and a camera was installed for viewing the raceway when the peep hole was occupied by the depth measurements equipment. Temperature estimation was made on thermal radiation guided via an optical fibre from the raceway to a spectrometer. Evaluation methods were developed based on Planck radiation law. The measurement techniques and their use for monitoring of raceway conditions are discussed.

  • 283. Höchst, A
    et al.
    Scheuerer, R
    Stahl, H
    Fischer, F
    Metzger, L
    Reichenbach, R
    Lrmer, F
    Kronmuller, S
    Watcham, S
    Rusu, C
    RISE., Swedish ICT, Acreo.
    Stable thin film encapsulation of acceleration sensors using polycrystalline silicon as sacrificial encapsulation layer2004Ingår i: Sensors and Actuators A-Physical, ISSN 0924-4247, E-ISSN 1873-3069, Vol. 114, s. 355-361Artikel i tidskrift (Refereegranskat)
  • 284. Höglund, L
    et al.
      Karlsson, K F
    Holtz, P O
    Pettersson,   H
    Pistol, M E
    Wang, Q
    RISE., Swedish ICT, Acreo.
      Almqvist, S
    Asplund, C
    Malm, H
    Petrini, E
    Andersson, J Y
    RISE., Swedish ICT, Viktoria.
    Energy level scheme of InAs/InxGa1?xAs/GaAs quantum-dots-in-a-well infrared photodetector structures2010Ingår i: PHYSICAL REVIEW, Vol. b82, s. 35314-Artikel i tidskrift (Refereegranskat)
  • 285. Höglund, L
    et al.
    Holtz, P O
    Pettersson, H
    Asplund, C
    Wang, Q
    RISE., Swedish ICT, Acreo.
    Almqvist, S
    Malm, H
    Petrini, E
    Andersson, J Y
    RISE., Swedish ICT, Viktoria.
    Bias mediated tuning of the detection wavelength in asymmetrical quantum dots-in-a-well infrared photodetectors2008Ingår i: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 93, s. 203512-Artikel i tidskrift (Refereegranskat)
  • 286. Höglund, L
    et al.
    Holtz, P O
    Pettersson, H
    Asplund, C
    Wang, Q
    RISE., Swedish ICT, Acreo.
    Almqvist, S
    Smuk, S
    Petrini, E
    Andersson, JY
    RISE., Swedish ICT, Viktoria.
    Bias temperature dependence of the escape processes in quantum dots-in-a-well infrared photodetectors2008Ingår i: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 93, s. 1035201-Artikel i tidskrift (Refereegranskat)
  • 287. Höglund, L
    et al.
    Holtz, P O
      Pettersson, H
    Asplund, C
    Wang, Q
    RISE., Swedish ICT, Acreo.
    Malm, H
    Almqvist, S
    Petrini, E
    Andersson, J Y
    RISE., Swedish ICT, Viktoria.
    Optical pumping as artificial doping in quantum dots-in-a-well infrared photodetectors2009Ingår i: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 94, s. 53503-Artikel i tidskrift (Refereegranskat)
  • 288. Iglesias Olmedo, M.
    et al.
    Pang, Xiaodan
    RISE., Swedish ICT, Acreo.
    Schatz, R.
    Zibar, D.
    Tafur Monroy, I.
    Jacobsen, G
    Popov, S
    Digital signal processing approaches for semiconductor phase noise tolerant coherent transmission systems2015Ingår i: Proceedings of SPIE - The International Society for Optical Engineering, 2015Konferensbidrag (Refereegranskat)
    Abstract [en]

    We discuss about digital signal processing approaches that can enable coherent links based on semiconductor lasers. A state-of-the art analysis on different carrier-phase recovery (CPR) techniques is presented. We show that these techniques are based on the assumption of lorentzian linewidth, which does not hold for monolithically integrated semiconductor lasers. We investigate the impact of such lineshape on both 3 and 20 dB linewidth and experimentally conduct a systematic study for 56-GBaud DP-QPSK and 28-GBaud DP-16QAM systems using a decision directed phase look loop algorithm. We show how carrier induced frequency noise has no impact on linewidth but a significant impact on system performance; which rises the question on whether 3-dB linewidth should be used as performance estimator for semiconductor lasers. © 2015 SPIE.

  • 289.
    Irukulapati, Maga
    et al.
    Ericsson AB, Sweden.
    Secondini, Marco
    TeCIP Institute, Italy.
    Agrell, Erik
    Chalmers University of Technology, Sweden.
    Johannisson, Pontus
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Wymeersch, Henk
    Chalmers University of Technology, Sweden.
    Improved Lower Bounds on Mutual Information Accounting for Nonlinear Signal--Noise Interaction2018Ingår i: Journal of Lightwave Technology, ISSN 0733-8724, E-ISSN 1558-2213, Vol. 36, nr 22, s. 5152-5159Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In fiber-optic communications, evaluation of mutual information (MI) is still an open issue due to the unavailability of an exact and mathematically tractable channel model. Traditionally, lower bounds on MI are computed by approximating the (original) channel with an auxiliary forward channel. In this paper, lower bounds are computed using an auxiliary backward channel, which has not been previously considered in the context of fiber-optic communications. Distributions obtained through two variations of the stochastic digital backpropagation (SDBP) algorithm are used as auxiliary backward channels and these bounds are compared with bounds obtained through the conventional digital backpropagation (DBP). Through simulations, higher information rates were achieved with SDBP, which can be explained by the ability of SDBP to account for nonlinear signal--noise interactions

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