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
Pemberat membentuk pancaran yang boleh menekan isyarat gangguan ke arah stesen mudah alih luar sel dalam pautan bawah direka bentuk untuk sistem OFDMA berasaskan dupleks pembahagian masa apabila maklumat saluran tidak sempurna. Pemberat pembentuk pancaran yang diperolehi tidak meningkatkan prestasi SINR purata secara monoton dengan peningkatan SNR pemancar jika songsangan SNR pemancar digunakan sebagai faktor penyusunan pemberat pembentuk pancaran dan maklumat saluran yang diperolehi oleh BS untuk mereka bentuk pemberat BF tidak sempurna. . Oleh itu, kami mencadangkan satu skim mudah untuk memilih faktor regularisasi. Pemberat pembentuk pancaran yang dicadangkan meningkatkan prestasi secara monoton dengan peningkatan SNR penghantaran dan mencapai prestasi yang hampir optimum. Prestasi yang dicapai dengan menggunakan pemberat membentuk rasuk yang digunakan dalam pautan atas kepada pembentukan rasuk pautan bawah juga disiasat.
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Salinan
Eunchul YOON, Joontae KIM, "Downlink Beamforming with Imperfect Channel Information for a TDD-Based OFDMA System" in IEICE TRANSACTIONS on Communications,
vol. E92-B, no. 9, pp. 2967-2971, September 2009, doi: 10.1587/transcom.E92.B.2967.
Abstract: The beamforming weights which can suppress the interfering signal toward out-of-cell mobile stations in downlink are designed for a time division duplexing based OFDMA system when the channel information is not perfect. The derived beamforming weights do not improve the average SINR performance monotonously with the increased transmit SNR if the inverse of the transmit SNR is used as the regularization factor of the beamforming weights and the channel information obtained by the BS to design the BF weights is not perfect. Therefore, we suggest a simple scheme to select the regularization factor. The proposed beamforming weights improve the performance monotonously with the increased transmit SNR and achieve near-optimal performance. The performance achieved by applying the beamforming weights used in uplink to downlink beamforming is also investigated.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E92.B.2967/_p
Salinan
@ARTICLE{e92-b_9_2967,
author={Eunchul YOON, Joontae KIM, },
journal={IEICE TRANSACTIONS on Communications},
title={Downlink Beamforming with Imperfect Channel Information for a TDD-Based OFDMA System},
year={2009},
volume={E92-B},
number={9},
pages={2967-2971},
abstract={The beamforming weights which can suppress the interfering signal toward out-of-cell mobile stations in downlink are designed for a time division duplexing based OFDMA system when the channel information is not perfect. The derived beamforming weights do not improve the average SINR performance monotonously with the increased transmit SNR if the inverse of the transmit SNR is used as the regularization factor of the beamforming weights and the channel information obtained by the BS to design the BF weights is not perfect. Therefore, we suggest a simple scheme to select the regularization factor. The proposed beamforming weights improve the performance monotonously with the increased transmit SNR and achieve near-optimal performance. The performance achieved by applying the beamforming weights used in uplink to downlink beamforming is also investigated.},
keywords={},
doi={10.1587/transcom.E92.B.2967},
ISSN={1745-1345},
month={September},}
Salinan
TY - JOUR
TI - Downlink Beamforming with Imperfect Channel Information for a TDD-Based OFDMA System
T2 - IEICE TRANSACTIONS on Communications
SP - 2967
EP - 2971
AU - Eunchul YOON
AU - Joontae KIM
PY - 2009
DO - 10.1587/transcom.E92.B.2967
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E92-B
IS - 9
JA - IEICE TRANSACTIONS on Communications
Y1 - September 2009
AB - The beamforming weights which can suppress the interfering signal toward out-of-cell mobile stations in downlink are designed for a time division duplexing based OFDMA system when the channel information is not perfect. The derived beamforming weights do not improve the average SINR performance monotonously with the increased transmit SNR if the inverse of the transmit SNR is used as the regularization factor of the beamforming weights and the channel information obtained by the BS to design the BF weights is not perfect. Therefore, we suggest a simple scheme to select the regularization factor. The proposed beamforming weights improve the performance monotonously with the increased transmit SNR and achieve near-optimal performance. The performance achieved by applying the beamforming weights used in uplink to downlink beamforming is also investigated.
ER -