Title :
Throughput performance of CDMA-ALOHA in S-band land mobile satellite channel
Author :
Nakanishi, Tsukasa ; Ikegami, Tetsushi
Author_Institution :
Dept. of Electron. & Commun., Meiji Univ., Kawasaki, Japan
Abstract :
The throughput performance of mobile satellite communications using the unslotted-CDMA-ALOHA system is examined. Computer simulation is carried out using measured propagation data, and throughput performance for the different propagation characteristics are compared. The simulation result shows that the short packet length raises the efficiency of mobile satellite communications. The difference of the propagation characteristic appears in the performance in the longer packet. The throughput performance of the communication channel of the urban city is worse than the suburb, when the traffic is small. The characteristics improve, when the traffic increases
Keywords :
UHF radio propagation; code division multiple access; land mobile radio; mobile satellite communication; multiuser channels; packet radio networks; 2.1 GHz; S-band land mobile satellite channel; UHF; communication channel; computer simulation; efficiency; measured propagation data; mobile satellite communications; propagation characteristics; short packet length; suburb; throughput performance; unslotted-CDMA-ALOHA system; urban city; Antenna measurements; Artificial satellites; Cities and towns; Computer simulation; Extraterrestrial measurements; Mobile communication; Satellite communication; Satellite ground stations; Shadow mapping; Throughput;
Conference_Titel :
Spread Spectrum Techniques and Applications, 2000 IEEE Sixth International Symposium on
Conference_Location :
Parsippany, NJ
Print_ISBN :
0-7803-6560-7
DOI :
10.1109/ISSSTA.2000.876461
