A proposal of SS communication system using LEO satellite for observing ecology of sea turtles

Author

Tokuyasu, Tomohiro ; Wada, Tadahiro ; Yamazato, Takaya ; Katayama, Masaaki ; Ogawa, Akira

Author_Institution

Dept. of Inf. Electron., Nagoya Univ., Japan

Volume

2

fYear

1997

fDate

3-8 Nov 1997

Firstpage

1157

Abstract

In this paper, we examine a system for observing the ecology of sea animals by means of a low Earth orbit satellite. We consider the system performance in the up-link, which is a communication link from the animal stations to the satellite. Since the up-link conditions are severe, we employ M-ary/SS with CDMA ALOHA as a multiple access scheme. A key issue to realize the system depends on an acquisition technique which is robust to the effect of large Doppler shift caused by the rapid movement of the low Earth orbit satellite. In this paper, we discuss code-acquisition and estimation of carrier frequency considering the M-ary/SS/CDMA technique to realize this system

Keywords

Doppler shift; access protocols; code division multiple access; ecology; frequency estimation; radiotelemetry; satellite telemetry; spread spectrum communication; synchronisation; zoology; CDMA ALOHA; Doppler shift; LEO satellite; M-ary spread spectrum; M-ary/SS-CDMA; SS communication system; acquisition technique; animal stations; carrier frequency estimation; code-acquisition; communication link; ecology; multiple access scheme; sea animals; sea turtles; system performance; up-link; Artificial satellites; Doppler shift; Environmental factors; Frequency estimation; Low earth orbit satellites; Marine animals; Multiaccess communication; Proposals; Robustness; System performance;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1997. GLOBECOM '97., IEEE

Conference_Location

Phoenix, AZ

Print_ISBN

0-7803-4198-8

Type

conf

DOI

10.1109/GLOCOM.1997.638508

Filename

638508