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EnglishThe classical estimation of co-channel interference in asynchronous direct sequence-code division multiple access (DS-CDMA) systems, obtained for a conventional receiver under the standard Gaussian approximation (SGA), is analytically minimised with respect to the auto-correlation function of spreading sequences. The optimum auto-correlation function is found to be real, with alternating signs, and extremely closely follows an exponential trend. A family of chaotic maps is presented which is able to generate sequences with exponential auto-correlation function with alternating signs. The resulting DS-CDMA system is an extremely good approximation of the optimum achievable system
Interference minimization by auto-correlation shaping in asynchronous DS-CDMA systems: Chaos-based spreading is nearly optimal / G., Mazzini; R., Rovatti; Setti, G.. - In: ELECTRONICS LETTERS. - ISSN 0013-5194. - STAMPA. - 35:13(1999), pp. 1054-1055. [10.1049/el:19990754]
| Titolo: | Interference minimization by auto-correlation shaping in asynchronous DS-CDMA systems: Chaos-based spreading is nearly optimal | |
| Autori: | ||
| Data di pubblicazione: | 1999 | |
| Rivista: | ||
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1049/el:19990754 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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http://hdl.handle.net/11583/2696634
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