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    Error Probabillty for Direct-Sequence Spread-Spectrum Multiple- Access Communications Over Nonselective and Frequency-Selective Rician Fading Channels.

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    No. of downloads: 434

    Date
    1986
    Author
    Geraniotis, Evaggelos A.
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    Abstract
    An accurate approximation is obtained for the average probability of error In an asynchronous bleary direct-sequence spread- spectrum multiple-access communications system operating over nonselective and frequency-selective Rician fading channels. The approximation is based on the integration of the characteristic function of the multiple-access interference which now consists of specular and scatter components. For nonselective fading the amount of computation required to evaluate this approximation grows linearly with the product KN, where K is the number of simultaneous transmitters and N is the number of chips per bit. For frequency-selective fading the computational effort grows linearly with the product KNsuKN. The resulting probability of error is also compared with an approximation based on the signal- to-noise ratio. Numerical results are presented for specific chip waveforms and signature sequences.
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    http://hdl.handle.net/1903/4432
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