Chip Pulse Shaping in Asynchronous Chaos-Based DS-CDMA
This paper extends and fully formalizes some previous results by developing an analytical method to account for the general chip pulse for DS-CDMA systems in an asynchronous environment with an integrate-and-dump receiver, applying it to commonly used pulses. Given the pulse, such a formal method al...
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| Veröffentlicht in: | IEEE transactions on circuits and systems. 1, Fundamental theory and applications Fundamental theory and applications, 2007-10, Vol.54 (10), p.2299-2314 |
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| container_title | IEEE transactions on circuits and systems. 1, Fundamental theory and applications |
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| creator | Mazzini, G.. Setti, G.. Rovatti, R.. |
| description | This paper extends and fully formalizes some previous results by developing an analytical method to account for the general chip pulse for DS-CDMA systems in an asynchronous environment with an integrate-and-dump receiver, applying it to commonly used pulses. Given the pulse, such a formal method allows us to define the optimum spreading code autocorrelation to be used and the relative signal-to-interference ratio performance. A chaos-based spreading code is plugged into this model to show that such an optimum performance can be very well approximated by practical sequence generators. This is shown by analyzing some typical bandlimited and substantially bandlimited pulses and determining the optimum spreading for each of them. These results prove that the gain of chaos-based spreading over conventional i.i.d.-like spreading can reach 75% when practical bandlimited pulses are considered. |
| doi_str_mv | 10.1109/TCSI.2007.904642 |
| format | Article |
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Given the pulse, such a formal method allows us to define the optimum spreading code autocorrelation to be used and the relative signal-to-interference ratio performance. A chaos-based spreading code is plugged into this model to show that such an optimum performance can be very well approximated by practical sequence generators. This is shown by analyzing some typical bandlimited and substantially bandlimited pulses and determining the optimum spreading for each of them. 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| source | IEEE Xplore |
| subjects | Approximation Autocorrelation Chaos Chips Circuits Formal method Gain Machinery Mathematical analysis Multiaccess communication Multiple access interference Optimization Performance analysis Propagation delay Pulse generation Pulse shaping methods Shape Spreading |
| title | Chip Pulse Shaping in Asynchronous Chaos-Based DS-CDMA |
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