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Träfflista för sökning "WFRF:(Karlsson Magnus 1967 ) "

Sökning: WFRF:(Karlsson Magnus 1967 )

  • Resultat 1-10 av 313
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1.
  • Ahmad, Tauseef, 1986-, et al. (författare)
  • Methodology for Power-Aware Coherent Receiver Design
  • 2013
  • Ingår i: Advanced Photonics Congress (SPPCom) 2013.
  • Konferensbidrag (refereegranskat)abstract
    • We describe a methodology to design and evaluate DSP hardware for a coherent receiver. Important parameters that can be assessed include DSP power consumption and chip area.
2.
  • Alireza, Sheikh, 1989-, et al. (författare)
  • Dispersion Compensation Filter Design Optimized for Robustness and Power Efficiency
  • 2015
  • Ingår i: Signal Processing in Photonics Communications, SPPCom 2015; Boston, MA; United States; 27 June 2015 through 1 July 2015. - 978-155752000-5
  • Konferensbidrag (refereegranskat)abstract
    • We present an optimized CD compensation filter with improved performance and increased resilience to quantization errors. The filter is given in closed form based on a constrained least-squares problem.
3.
  • Alireza, Sheikh, 1989-, et al. (författare)
  • Dispersion Compensation FIR Filter with Improved Robustness to Coefficient Quantization Errors
  • 2016
  • Ingår i: Journal of Lightwave Technology. - 0733-8724.
  • Tidskriftsartikel (refereegranskat)abstract
    • In this paper, we propose a new finite impulse response (FIR) filter for chromatic dispersion compensation which is given in closed form. We identify a relation between the out-of-band gain and the in-band error when the filter is implemented with finite-precision arithmetic. In particular, a large out-of-band gain makes the filter more sensitive to coefficient quantization errors due to finite precision digital signal processing. To improve robustness to coefficient quantization errors, our proposed filter is designed based on confining the out-of-band gain. By means of simulations, we show that our filter outperforms other existing FIR filters. The performance gain improves with increasing modulation order and decreasing number of bits used to represent the filter taps.
4.
  • Björk, Magnus, 1977-, et al. (författare)
  • Exposed Datapath for Efficient Computing
  • 2006
  • Rapport (övrigt vetenskapligt)abstract
    • We introduce FlexCore, which is the first exemplar of a processor based on the FlexSoC processor paradigm. The FlexCore utilizes an exposed datapath for increased performance. Microbenchmarks yield a performance boost of a factor of two over a traditional five-stage pipeline with the same functional units as the FlexCore. We describe our approach to compiling for the FlexCore. A flexible interconnect allows the FlexCore datapath to be dynamically reconfigured as a consequence of code generation. Additionally, specialized functional units may be introduced and utilized within the same architecture and compilation framework. The exposed datapath requires a wide control word. The conducted evaluation of two micro benchmarks confirms that this increases the instruction bandwidth and memory footprint. This calls for an efficient instruction decoding as proposed in the FlexSoC paradigm.
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10.
  • Lundberg, Lars, 1989-, et al. (författare)
  • Power Consumption of a Minimal-DSP Coherent Link with a Polarization Multiplexed Pilot-Tone
  • 2016
  • Ingår i: 42nd European Conference and Exhibition on Optical Communications, September 18-22, 2016, Düsseldorf. - 978-3-8007-4274-5
  • Konferensbidrag (refereegranskat)abstract
    • We experimentally study the trade-off between performance and DSP power consumption. While minimal DSP allows transmission of 16QAM at 5 GBaud, the symbol rate can be increased if an extra equalizer is added, leading to energy savings in optical components.
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