Spreading Sequences Generated Using Asymmetrical Integer-Number Maps
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Chaotic sequences produced by piecewise linear maps can be transformed to binary sequences. The binary sequences are optimal for the asynchronous DS/CDMA systems in case of certain shapes of the maps. This paper is devoted to the one-to-one integer-number maps derived from the suitable asymmetrical piecewise linear maps. Such maps give periodic integer-number sequences, which can be transformed to the binary sequences. The binary sequences produced via proposed modified integer-number maps are perfectly balanced and embody good autocorrelation and crosscorrelation properties. The number of different binary sequences is sizable. The sequences are suitable as spreading sequences in DS/CDMA systems.
Typ dokumentuRecenzovaný dokument
Zdrojový dokumentRadioengineering. 2007, vol. 16, č. 3, s. 108-112. ISSN 1210-2512
- 2007/3