General techniques for analyzing DS/SSMA interference illustrated by evaluating a noncoherent system

McDowell, A.T.; Lehnert, J.S.

doi:10.1109/26.545903

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Quaternary Interference Terms1

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2004

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“…The pdf may be determined using the method in [5] if the statistics for the sums over N of A I , A2, B1 and B2 are known. These statistics are presented in the following section.…”

Section: Quaternary Interference Termsmentioning

confidence: 99%

Approximate Pbe for quaternary random-sequence spread-spectrum communication

McDowell¹

Proceedings of the 1996 Tactical Communications Conference. Ensuring Joint Force Superiority in the Information Age

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An analysis of a quaternary direct-sequence spread-spectrum multiple-access communication system is presented. The system uses a correlation receiver and random signature sequences in an additive white Gaussian noise channel. The multiple-access interference (MAI) is analysed using a product of symmetric multinomials. The analysis is greatly simplified by assuming independent MA1 for different interferers. The result is a procedure for the determination of independent MA1 probability density functions (pdf). The pdf's are subsequently used to obtain an approximation to the probability of bit error.

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“…The pdf may be determined using the method in [5] if the statistics for the sums over N of A I , A2, B1 and B2 are known. These statistics are presented in the following section.…”

Section: Quaternary Interference Termsmentioning

confidence: 99%