Nonlinear Theory and Its Applications, IEICE
Online ISSN : 2185-4106
ISSN-L : 2185-4106
Special Issue on Recent Progress in Nonlinear Theory and Its Applications
Spectral shaping of spreading sequences as a mean to address the trade-off between narrowband and multi-access interferences in UWB systems
Mauro MangiaFabio PareschiRiccardo RovattiGianluca Setti
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2011 Volume 2 Issue 4 Pages 386-399

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Abstract

This paper presents a way to cope with the need of simultaneously rejecting narrowband interference and multi-access interference in a UWB system based on direct-sequence CDMA. With this aim in mind, we rely on a closed-form expression of the system bit error probability in presence of both effects. By means of such a formula, we evaluate the effect of spectrum shaping techniques applied to the spreading sequences. The availability of a certain number of degrees of freedom in deciding the spectral profile allows us to cope with different configurations depending on the relative interfering power but also on the relative position of the signal center frequency and the narrowband interferer.

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© 2011 The Institute of Electronics, Information and Communication Engineers
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