The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Kecekapan jalur lebar pautan songsang bagi sistem CDMA bertindih secara spektrum dengan kawalan kuasa penghantaran pantas dinilai untuk mencari pertindihan optimum, di mana kecekapan lebar jalur ditakrifkan sebagai kadar bit agregat maksimum semua subsistem per unit lebar jalur (bps/Hz). Persekitaran sel tunggal dan berbilang dipertimbangkan. Selain nadi cip segi empat tepat, impak penapis membentuk nadi dibincangkan. Didapati bahawa pembentukan nadi spektrum kosinus yang dibangkitkan membantu meningkatkan kecekapan lebar jalur dan masalah penapis membentuk nadi yang ketat boleh dielakkan jika sejumlah besar subsistem bertindih. Ia juga didapati bahawa jarak pembawa optimum kekal tidak berubah tanpa mengira bentuk profil kelewatan kuasa saluran berbilang laluan, sama ada pudar berbilang laluan wujud atau tidak, dan sama ada sel tunggal atau sistem sel berbilang dipertimbangkan. Walau bagaimanapun, kecekapan jalur lebar sangat bergantung kepada mereka dan kesan daripada parameter yang berkaitan dibincangkan.
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Salinan
Duk Kyung KIM, Fumiyuki ADACHI, "Reverse Link Bandwidth Efficiency of a Spectrally Overlapped CDMA System" in IEICE TRANSACTIONS on Communications,
vol. E85-B, no. 4, pp. 758-768, April 2002, doi: .
Abstract: The reverse link bandwidth efficiency of a spectrally overlapped CDMA system with fast transmit power control is evaluated to find the optimum overlapping, where the bandwidth efficiency is defined as the maximum aggregate bit rate of all subsystems per unit bandwidth (bps/Hz). Single and multiple cell environments are considered. Besides the rectangular chip pulse, the impact of a pulse-shaping filter is discussed. It is found that the raised cosine spectrum pulse shaping helps to increase the bandwidth efficiency and strict pulse shaping filter problem can be avoided if a large number of subsystems are overlapped. It is also found that the optimum carrier spacing remains unchanged irrespective of the power delay profile shape of the multipath channel, whether multipath fading exists or not, and whether a single cell or multiple cell system is considered. However, the bandwidth efficiency strongly depends on them and the impacts of the related parameters are discussed.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e85-b_4_758/_p
Salinan
@ARTICLE{e85-b_4_758,
author={Duk Kyung KIM, Fumiyuki ADACHI, },
journal={IEICE TRANSACTIONS on Communications},
title={Reverse Link Bandwidth Efficiency of a Spectrally Overlapped CDMA System},
year={2002},
volume={E85-B},
number={4},
pages={758-768},
abstract={The reverse link bandwidth efficiency of a spectrally overlapped CDMA system with fast transmit power control is evaluated to find the optimum overlapping, where the bandwidth efficiency is defined as the maximum aggregate bit rate of all subsystems per unit bandwidth (bps/Hz). Single and multiple cell environments are considered. Besides the rectangular chip pulse, the impact of a pulse-shaping filter is discussed. It is found that the raised cosine spectrum pulse shaping helps to increase the bandwidth efficiency and strict pulse shaping filter problem can be avoided if a large number of subsystems are overlapped. It is also found that the optimum carrier spacing remains unchanged irrespective of the power delay profile shape of the multipath channel, whether multipath fading exists or not, and whether a single cell or multiple cell system is considered. However, the bandwidth efficiency strongly depends on them and the impacts of the related parameters are discussed.},
keywords={},
doi={},
ISSN={},
month={April},}
Salinan
TY - JOUR
TI - Reverse Link Bandwidth Efficiency of a Spectrally Overlapped CDMA System
T2 - IEICE TRANSACTIONS on Communications
SP - 758
EP - 768
AU - Duk Kyung KIM
AU - Fumiyuki ADACHI
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E85-B
IS - 4
JA - IEICE TRANSACTIONS on Communications
Y1 - April 2002
AB - The reverse link bandwidth efficiency of a spectrally overlapped CDMA system with fast transmit power control is evaluated to find the optimum overlapping, where the bandwidth efficiency is defined as the maximum aggregate bit rate of all subsystems per unit bandwidth (bps/Hz). Single and multiple cell environments are considered. Besides the rectangular chip pulse, the impact of a pulse-shaping filter is discussed. It is found that the raised cosine spectrum pulse shaping helps to increase the bandwidth efficiency and strict pulse shaping filter problem can be avoided if a large number of subsystems are overlapped. It is also found that the optimum carrier spacing remains unchanged irrespective of the power delay profile shape of the multipath channel, whether multipath fading exists or not, and whether a single cell or multiple cell system is considered. However, the bandwidth efficiency strongly depends on them and the impacts of the related parameters are discussed.
ER -