Performance of binary and quaternary direct-sequence spread-spectrum multiple-access systems with random signature sequences

• Published in: IEEE transactions on communications Vol. 39; no. 5; pp. 713 - 724
• Main Authors: Geraniotis, E., Ghaffari, B.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.05.1991; Institute of Electrical and Electronics Engineers
• Subjects: Additive noise; Additive white noise; Applied sciences; AWGN; Bandwidth; Error probability; Exact sciences and technology; Gaussian approximation; Interference; Radiocommunication specific techniques; Radiocommunications; Random sequences; Signal to noise ratio; Spread spectrum communication; Telecommunications; Telecommunications and information theory; Multiple access; Error probability; Binary system; Receiver; Spread spectrum; Performance; Quaternary system; Direct sequence
• ISSN: 0090-6778; 1558-0857
• DOI: 10.1109/26.87162

The performance of synchronous and asynchronous, binary and quaternary (with and without offset) direct-sequence spread-spectrum multiple-access (DS/SSMA) communication systems using random signature sequences and arbitrary chip waveforms is investigated. The average probability of error at the output of the correlation receiver is evaluated using a characteristic-function approach for these systems. Numerical results are presented that illustrate performance comparisons between systems using random and deterministic signature sequences, synchronous and asynchronous systems, systems with rectangular or sinewave chip waveforms, and binary and quaternary systems with the same data rates and bandwidth. In all cases, the accuracy of the Gaussian approximation is also examined.< >