|
Títol:
|
Spatial distribution analysis with capture effect of a mobile S-ALOHA network
|
|
Autor/a:
|
Covarrubias, David; Ruiz Boqué, Sílvia; Huguet, Joan; Olmos Bonafé, Juan José
|
|
Altres autors:
|
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. GRCM - Grup de Recerca en Comunicacions Mòbils |
|
Abstract:
|
The throughput performance of a mobile S-ALOHA network can be improved considering the capture phenomenon, which also depends on the spatial distribution of the mobiles within the cell. We have studied the capture probabilities that arise in a mobile radio scenario in the presence of fading and shadowing, and considering both, uniform and non-uniform spatial distribution models. In particular we were interested in the limit behaviour of these models, which has been shown to be directly related to the capture probability. This analysis allows a quantitative comparison of three spatial distribution models for mobile users under real mobile channels. The use of an exponential backoff retransmission algorithm is considered. With these assumptions the performance of the anarchic ALOHA is improved considerably obtaining higher throughput values with stabilised behaviour and lower delays values. |
|
Abstract:
|
Peer Reviewed |
|
Matèries:
|
-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació
-Telecommunication
-Multiuser channels
-Access protocols
-Cellular radio
-Statistical analysis
-Probability
-Fading channels
-Packet radio networks
-Multi-access systems
-Telecomunicació |
|
Drets:
|
|
|
Tipus de document:
|
Article - Versió publicada
Objecte de conferència |
|
Publicat per:
|
Institute of Electrical and Electronics Engineers (IEEE)
|
|
Compartir:
|
|
