Near-far effect on slotted ALOHA channels with shadowing and capture

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Abstract

Signal statistics are modelled in an environment of shadowing and ground wave path loss. This propagation model is used to investigate the channel performance of a slotted Aloha network. The results are presented as receiver capture proability vs. packet propagation distance, with the log-normal variance and the offered traffic as parameters. Log-normal spatial distributions and uniform distributions of users over the coverage area are compared. The former facilitate the analysis of mobile packet-radio channels with near-far effect and shadowing and can often approximate the latter type of distribution. It is shown that stability and throughput cannot be realistically studied by (quasi-) uniform distributions. The log-normal subscriber density with a spatial spread of 8.68 dB gives a viable alternative to the study of the heavily loaded collision-type multiple-access channel.

Original languageEnglish
Title of host publicationIEEE 39th Vehicular Technology Conference
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Pages809-813
Number of pages5
Volume2
DOIs
Publication statusPublished - 1 Dec 1989
Externally publishedYes
Event39th IEEE Vehicular Technology Conference (VTC 1989-Spring) - San Francisco, CA, USA, United States
Duration: 1 May 19893 May 1989

Conference

Conference39th IEEE Vehicular Technology Conference (VTC 1989-Spring)
CountryUnited States
CitySan Francisco, CA, USA
Period1/05/893/05/89
OtherGateway to New Concepts in Vehicular Technology

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  • Cite this

    Linnartz, J. P. M. G., & Prasad, R. (1989). Near-far effect on slotted ALOHA channels with shadowing and capture. In IEEE 39th Vehicular Technology Conference (Vol. 2, pp. 809-813). Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/VETEC.1989.40167