0000000000603207

AUTHOR

L. Alcuri

showing 3 related works from this author

Signal-to-Noise Ratio in Bandpass Direct-Sequence Spread-Spectrum Modulation Systems

1982

The effects of a linear transmission channel on the performance of a correlator receiver for a direct-sequence spreadspectrum system are analyzed and a complete treatment of the influence of a periodic spreading code is carried out. The output data signal is obtained as a function of the channel characteristic and the code sequence employed; this allows maximizing the output signal level and evaluation of the influence of the synchronization error of the local code. The asymptotic value of the correlation loss has also been derived together with the intersymbol inteference power. The general expression of a figure of merit of the effectiveness of the system is also obtained in simple terms …

Signal processingComputer scienceAutocorrelationDirect-sequence spread spectrumTopologySpread spectrumSignal-to-noise ratioBand-pass filterModulationElectronic engineeringFigure of meritElectrical and Electronic EngineeringComputer Science::Information TheoryCommunication channelIEEE Transactions on Communications
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Filtering out intersymbol interference in spread-spectrum communication systems

1979

In this letter the transfer characteristic of the optimum filter suitable for eliminating intersymbol interference in pseudo-noise spread-spectrum communication systems is determined. Such a characteristic is independent of the code sequence employed.

Intersymbol interferenceComputer scienceElectronic engineeringFilter (signal processing)Direct-sequence spread spectrumElectrical and Electronic EngineeringCommunications systemRaised-cosine filterNyquist ISI criterionPulse shapingComputer Science::Information TheoryRoot-raised-cosine filterElectronics Letters
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A study about DDoS attacks in SIP environments

2007

Settore ING-INF/03 - TelecomunicazioniDDoS SIP Protocol Change Detection
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