2024-03-28T10:25:24Z
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
16450
Katayama, Masaaki
16451
Okada, Hiraku
16452
Yamazato, Takaya
16453
Ogawa, Akira
16454
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.
journal article
IEEE
2001-06
application/pdf
International Conference on Communications
10
http://hdl.handle.net/2237/7750
https://nagoya.repo.nii.ac.jp/record/6117/files/ICC01.pdf
eng
https://doi.org/10.1109/ICC.2001.937256
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