Error Probability for Direct-Sequnce Spread-Spectrum Multiple-Access Communications Over Nonselective and Frequency-Selective Rician Fading Channels
Abstract
An accurate approximation is obtained for the average probability of error in an asynchronous binary 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 non- selective 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 KN squared. 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1986
- Accession Number
- ADA444376
Entities
Organizations
- University of Maryland