In this paper, we address the problem of computing the probability that r out of n interfering signals can be correctly received in a random access wireless system with capture, capable of performing up to K successive interference cancellation iterations. We provide an expression for the probability distribution of the number of captured packets that is scalable with n and r. We also provide an approximate expression for the mean number of captured signals, which gives the system throughput as a function of K and n. The approximation is much easier to compute than the exact mean and provides good results for reasonable values of K. Finally, we present some selected results for a case study with the purpose of illustrating the potential of the proposed mathematical framework, and validate the accuracy of the approximate method for the computation of the system throughput.
Analysis of the Capture Probability in Wireless Systems with Multi-Packet Reception Capabilities and Successive Interference Cancellation
ZANELLA, ANDREA;ZORZI, MICHELE
2011
Abstract
In this paper, we address the problem of computing the probability that r out of n interfering signals can be correctly received in a random access wireless system with capture, capable of performing up to K successive interference cancellation iterations. We provide an expression for the probability distribution of the number of captured packets that is scalable with n and r. We also provide an approximate expression for the mean number of captured signals, which gives the system throughput as a function of K and n. The approximation is much easier to compute than the exact mean and provides good results for reasonable values of K. Finally, we present some selected results for a case study with the purpose of illustrating the potential of the proposed mathematical framework, and validate the accuracy of the approximate method for the computation of the system throughput.Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.