2024-03-28T21:02:03Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00006117
2023-01-16T03:50:48Z
320:502:503
Comparison of CDMA and FDMA/TDMA in non-GEO Satellite Systems
Ichikawa, Naoki
Katayama, Masaaki
Okada, Hiraku
Yamazato, Takaya
Ogawa, Akira
open access
Copyright © 2001 IEEE. Reprinted from International Conference on Communications. v.10, 2001. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Nagoya University’s products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org.
We compare CDMA and FDMA (or TDMA)schemes in multi-beam non-geostationary satellite systems, taking the effects of antenna patterns on inter-cell interference into consideration. The maximum acceptable number of users per cell in uplink is employed as a measure of the system capacity. We have found that in FDMA (or TDMA) systems the maximum acceptable number of users varies according to the altitude of the satellites, while the performance is insensitive to the altitude in CDMA systems. For this reason, the altitude of the satellites is found to be an important factor for selecting multiple access schemes in non-geostationary satellite systems.
IEEE
2001-06
eng
journal article
VoR
http://hdl.handle.net/2237/7750
https://nagoya.repo.nii.ac.jp/records/6117
https://doi.org/10.1109/ICC.2001.937256
International Conference on Communications
10
https://nagoya.repo.nii.ac.jp/record/6117/files/ICC01.pdf
application/pdf
202.0 kB
2018-02-19