Throughput performance of CDMA-ALOHA in S-band land mobile satellite and stratospheric platform channels

Author

Nakanishi, Tsukasa ; Ikegami, Tetsushi

Author_Institution

Dept. of Electron. & Commun., Meiji Univ., Kawasaki, Japan

Volume

2

fYear

2000

fDate

2000

Firstpage

1085

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 performances for the different propagation characteristics are compared. The packet delay performance is evaluated along with the altitude of satellite when ARQ (automatic repeat request) scheme is introduced for error control. The simulation result shows that the short packet length raises the efficiency of mobile satellite communications. When ARQ is applied, the delay performance depends on the propagation condition in an urban channel, whereas the performance in a suburban channel is consistent with the offered traffic

Keywords

UHF radio propagation; access protocols; atmospheric electromagnetic wave propagation; automatic repeat request; code division multiple access; delays; fading channels; land mobile radio; mobile satellite communication; multiuser channels; packet radio networks; 2.1 GHz; ARQ scheme; AWGN channel; CDMA-ALOHA; S-band; UHF; automatic repeat request; computer simulation; high elevation angle propagation measurements; land mobile satellite channels; measured propagation data; mobile satellite communications; offered traffic; packet delay performance; propagation characteristics; satellite altitude; scattering; short packet length; stratospheric platform channels; suburban channel; throughput performance; unslotted-CDMA-ALOHA system; urban channel; Automatic repeat request; Communication system traffic control; Computational modeling; Computer simulation; Error correction; Performance evaluation; Propagation delay; Satellite communication; Throughput; Traffic control;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2000. PIMRC 2000. The 11th IEEE International Symposium on

Conference_Location

London

Print_ISBN

0-7803-6463-5

Type

conf

DOI

10.1109/PIMRC.2000.881587

Filename

881587