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Träfflista för sökning "WFRF:(Kennedy James A) srt2:(1995-1999)"

Sökning: WFRF:(Kennedy James A) > (1995-1999)

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1.
  • Leblanc, James, et al. (författare)
  • Pre-cursor extended RAM-DFE canceler (PERC) nonlinear equalizer for nonlinear ISI channels
  • 1998
  • Ingår i: Proceedings 1998 DSP Workshop. - : IEEE Signal Processing Society.
  • Konferensbidrag (refereegranskat)abstract
    • We consider a nonlinear equalizer structure that provides effective and computationally efficient intersymbol interference (ISI) reduction for channels with nonlinearities. The technique makes use of a RAM-DFE structure enhanced with the ability to cancel pre-cursor nonlinear ISI. In many nonlinear channels, the distortion caused by the nonlinear element (such as a nonlinear power amplifier) and bandlimiting filters creates nonlinear ISI. Such distortion typically limits the system to loworder constellations (such as QPSK). Higher order constellation are possible only if effective reduction of the nonlinear ISI is achieved. The applicability of our nonlinear equalizer and its performance for a nonlinear satellite channel is included.
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2.
  • Ryan, William E., et al. (författare)
  • Performance study of RAM-based decision feedback equalizers with application to nonlinear satellite channels
  • 1999
  • Ingår i: Signal Processing and its Applications. - Piscataway, NJ : IEEE Communications Society. - 1864354518
  • Konferensbidrag (refereegranskat)abstract
    • The performance of nonlinear decision feedback equalizer implementations based on the use a random access memory (RAM) look-up table are considered. RAM look-up tables admit the modeling, without approximation, of the nonlinear intersymbol interference of nonlinear channels with finite memory. Three equalizers are considered; the RAM-DFE; RAM-canceler; and recently developed pre-cursor enhanced RAM-DFE canceler (PERC). In contrast to the classical “feedforward” Volterra equalizers, these equalizers have the advantage that the nonlinear processing element is out of the path of the noise, thus avoiding noise amplification. Results are presented for 16-QAM which compare and demonstrate the effectiveness of these equalizers, particularly the PERC, on the nonlinear satellite channel
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  • Resultat 1-2 av 2
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konferensbidrag (2)
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refereegranskat (2)
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Leblanc, James (2)
Kennedy, Rodney A. (2)
Ryan, William E. (2)
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Luleå tekniska universitet (2)
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Engelska (2)
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