IEICE TRANSACTIONS on Fundamentals
Initial Acquisition of Code Timings and Carrier Frequencies of CDM Down-Link Signals in Multiple-LEO-Satellite Communication Systems
Summary :
In this paper, we discuss the initial acquisition of the code division multiplexed DS/SS down-link signals at a user terminal of multiple LEO mobile satellite communication systems. In LEO systems, a receiver generally receives signals from plural satellites for soft hand-off and for satellite diversity as a countermeasure to shadowing. In this situation, the signal from each satellite becomes the interference to the signals from other satellites. In addition to this inter-satellite interference, we have to consider the intra-satellite interference from user channels to a pilot channel because of the loss of orthogonality of channels at initial acquisition stage especially under frequency offsets due to Doppler effect. Thus in this paper, we analytically evaluate the performance of an initial acquisition scheme, taking the intra/inter-satellite interference under Doppler shift into account.
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- IEICE TRANSACTIONS on Fundamentals Vol.E81-A No.11 pp.2281-2290
- Publication Date
- 1998/11/25
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- Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
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Mihoko ISHIZU, Masaaki KATAYAMA, Takaya YAMAZATO, Akira OGAWA, "Initial Acquisition of Code Timings and Carrier Frequencies of CDM Down-Link Signals in Multiple-LEO-Satellite Communication Systems" in IEICE TRANSACTIONS on Fundamentals,
vol. E81-A, no. 11, pp. 2281-2290, November 1998, doi: .
Abstract: In this paper, we discuss the initial acquisition of the code division multiplexed DS/SS down-link signals at a user terminal of multiple LEO mobile satellite communication systems. In LEO systems, a receiver generally receives signals from plural satellites for soft hand-off and for satellite diversity as a countermeasure to shadowing. In this situation, the signal from each satellite becomes the interference to the signals from other satellites. In addition to this inter-satellite interference, we have to consider the intra-satellite interference from user channels to a pilot channel because of the loss of orthogonality of channels at initial acquisition stage especially under frequency offsets due to Doppler effect. Thus in this paper, we analytically evaluate the performance of an initial acquisition scheme, taking the intra/inter-satellite interference under Doppler shift into account.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e81-a_11_2281/_p
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@ARTICLE{e81-a_11_2281,
author={Mihoko ISHIZU, Masaaki KATAYAMA, Takaya YAMAZATO, Akira OGAWA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Initial Acquisition of Code Timings and Carrier Frequencies of CDM Down-Link Signals in Multiple-LEO-Satellite Communication Systems},
year={1998},
volume={E81-A},
number={11},
pages={2281-2290},
abstract={In this paper, we discuss the initial acquisition of the code division multiplexed DS/SS down-link signals at a user terminal of multiple LEO mobile satellite communication systems. In LEO systems, a receiver generally receives signals from plural satellites for soft hand-off and for satellite diversity as a countermeasure to shadowing. In this situation, the signal from each satellite becomes the interference to the signals from other satellites. In addition to this inter-satellite interference, we have to consider the intra-satellite interference from user channels to a pilot channel because of the loss of orthogonality of channels at initial acquisition stage especially under frequency offsets due to Doppler effect. Thus in this paper, we analytically evaluate the performance of an initial acquisition scheme, taking the intra/inter-satellite interference under Doppler shift into account.},
keywords={},
doi={},
ISSN={},
month={November},}
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TY - JOUR
TI - Initial Acquisition of Code Timings and Carrier Frequencies of CDM Down-Link Signals in Multiple-LEO-Satellite Communication Systems
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2281
EP - 2290
AU - Mihoko ISHIZU
AU - Masaaki KATAYAMA
AU - Takaya YAMAZATO
AU - Akira OGAWA
PY - 1998
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E81-A
IS - 11
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - November 1998
AB - In this paper, we discuss the initial acquisition of the code division multiplexed DS/SS down-link signals at a user terminal of multiple LEO mobile satellite communication systems. In LEO systems, a receiver generally receives signals from plural satellites for soft hand-off and for satellite diversity as a countermeasure to shadowing. In this situation, the signal from each satellite becomes the interference to the signals from other satellites. In addition to this inter-satellite interference, we have to consider the intra-satellite interference from user channels to a pilot channel because of the loss of orthogonality of channels at initial acquisition stage especially under frequency offsets due to Doppler effect. Thus in this paper, we analytically evaluate the performance of an initial acquisition scheme, taking the intra/inter-satellite interference under Doppler shift into account.
ER -
English
