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Träfflista för sökning "WFRF:(Caldera Manora) srt2:(2006)"

Sökning: WFRF:(Caldera Manora) > (2006)

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1.
  • Griffiths, Wayne, et al. (författare)
  • APP Decoding of Block Codes Over Gilbert-Elliott Channels Using Generalized Weight Polynomials
  • 2006
  • Konferensbidrag (refereegranskat)abstract
    • We present an a posteriori probability (APP) decoding algorithm for binary linear block codes over a Gilbert- Elliott channel (GEC) using generalized weight polynomials. The proposed approach is based on a single-sweep APP decoding technique that uses matrix multiplications. By fixing the crossover probability in the ‘bad’ state of the GEC at fifty percent, an APP decoding decision can be reached by evaluating trivariate polynomials without the need for the computationally more expensive matrix multiplications. In this case, the GEC is described by three variables, namely, the average fade to average connection time ratio, the burst factor, and the channel reliability factor. These variables can easily be deduced from error sequence measurements and hence can be related to many practical digital communication scenarios. The polynomial approach is demonstrated using a simple example and results of computer simulations are presented.
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2.
  • Rohani, Behrooz, et al. (författare)
  • Benefits of Perceptual Speech Quality Metrics in Modern Cellular Systems
  • 2006
  • Ingår i: Electronics Letters. - London : IEE. - 0013-5194 .- 1350-911X. ; 42:21, s. 1250-1251
  • Tidskriftsartikel (refereegranskat)abstract
    • Advanced algorithms have become available in recent years that can reliably measure the speech quality as “perceived” by humans. The benefits of applying the perceptual quality measures obtained using these algorithms in the Outer Loop Power Control (OLPC) of Third Generation Universal Mobile Telecommunication System (3G UMTS) are studied in this letter. It is shown that 20% capacity improvement compared to the use of conventional measures can be achieved while an adequate and uniform speech quality is maintained.
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  • Resultat 1-2 av 2
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konferensbidrag (1)
tidskriftsartikel (1)
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refereegranskat (2)
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Caldera, Manora (2)
Zepernick, Hans-Jürg ... (2)
Rohani, Bijan (1)
Griffiths, Wayne (1)
Rohani, Behrooz (1)
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Blekinge Tekniska Högskola (2)
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Engelska (2)
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