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On Dispersion and Nonlinearity Degree of QPP Interleavers |
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PP: 397-400 |
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Author(s) |
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Lucian Trifina,
Daniela Tarniceriu,
Valeriu Munteanu,
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Abstract |
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| This paper shows a link between the dispersion and the nonlinearity degree of QPP (quadratic permutation polynomial)
interleavers. An upper bound for the dispersion of QPP interleavers is derived. This upper bound is computed very simple, only
depending on the coefficient of x2 of the polynomial and of the length of interleaver. The comparison with the real dispersion of QPP
interleavers given by Takeshita in [1] leads to insignificant difference. Searching of QPP interleavers based on a metric including upper
bound of dispersion and D parameter is equivalent with that based on
metric.
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