Title :
Performance of CDMA-ALOHA in shadowed mobile satellite and stratospheric platform channels
Author :
Ikegami, Tetsushi ; Mori, Yasuhiro ; Ohta, Masato
Author_Institution :
Dept. of Electron. & Commun., Meiji Univ., Kawasaki, Japan
Abstract :
Performance of mobile satellite communication in stratospheric platform along with low Earth orbit and quasi zenith satellite channels are examined. The throughput performance of mobile satellite communications using the slotted and unslotted CDMA-ALOHA systems is studied. Computer simulation is carried out using measured propagation data, and throughput performance for the different propagation characteristics is compared. The packet delay performance is also evaluated along with the altitude of satellite when ARQ (automatic repeat request.) scheme is introduced for error control. This paper studies the effect of transmission control of packets following the channel state monitor to improve throughput performance in measured land mobile satellite channels.
Keywords :
access protocols; automatic repeat request; land mobile radio; mobile satellite communication; packet radio networks; telecommunication congestion control; telecommunication traffic; ARQ; automatic repeat request; channel state monitor; error control; land mobile satellite channels; low Earth orbit; mobile satellite communication; packet delay performance; quasi zenith satellite channels; slotted CDMA-ALOHA systems; stratospheric platform channels; throughput performance; transmission control; unslotted CDMA-ALOHA systems; Artificial satellites; Automatic control; Automatic repeat request; Computer simulation; Delay; Error correction; Extraterrestrial measurements; Low earth orbit satellites; Satellite communication; Throughput;
Conference_Titel :
Spread Spectrum Techniques and Applications, 2002 IEEE Seventh International Symposium on
Print_ISBN :
0-7803-7627-7
DOI :
10.1109/ISSSTA.2002.1049293
