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Throughput Analysis of Spread-Slotted ALOHA in LEO Satellite Communication Systems with Nonuniform Traffic Distribution
Abbas JAMALIPOUR Masaaki KATAYAMA Takaya YAMAZATO Akira OGAWA
IEICE TRANSACTIONS on Communications
Publication Date: 1995/12/25
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Satellite Communication
LEO satellite systems, nonuniform traffic distribution, spread-slotted ALOHA packet communication, throughput analysis,
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An analytical framework to study the nonuniformity in geographical distribution of the traffic load in low earth orbit satellite communication systems is presented. The model is then used to evaluate the throughput performance of the system with direct-sequence packet spread-slotted ALOHA multiple-access technique. As the result, it is shown that nonuniformity in traffic makes the characteristics of the system significantly different from the results of uniform traffic case and that the performance of each user varies according to its location. Moreover, the interference reached from users of adjacent satellites is shown to be one of the main factors that limit the performance of system.