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
Dalam kertas kerja ini, penjadualan pengguna dengan pemilihan rasuk untuk berbilang input berbilang masukan besar-besaran digital penuh (MIMO) dicadangkan. Gangguan antara pengguna (IUI) boleh dibatalkan dengan prapengekodan seperti pemaksaan sifar di stesen pangkalan MIMO besar-besaran jika pelaksanaan perkakasan yang ideal diandaikan. Walau bagaimanapun, disebabkan oleh ciri-ciri komponen perkakasan yang tidak ideal, IUI berlaku di antara berbilang terminal pengguna yang diperuntukkan pada sumber yang sama. Oleh itu, dalam skema yang dicadangkan, arah rasuk untuk terminal pengguna yang diperuntukkan dilaraskan untuk memaksimumkan jumlah daya tampung pengguna. Peruntukan pengguna berdasarkan daya pemprosesan pengguna selepas pelarasan kearah rasuk kemudiannya dijalankan. Keputusan berangka yang diperoleh melalui simulasi komputer menunjukkan bahawa apabila bilangan terminal pengguna dalam sel adalah dua dan bilangan terminal pengguna yang diperuntukkan kepada satu blok sumber (RB) adalah dua, daya tampung setiap subpembawa bagi setiap subframe bertambah baik sebanyak kira-kira 3.0 bit. Sebaliknya, indeks keadilan (FI) dikurangkan sebanyak 0.03. Ini kerana hanya kebarangkalian dalam wilayah daya tampung tinggi yang meningkat seperti yang ditunjukkan dalam fungsi pengedaran kumulatif (CDF) daya tampung bagi setiap pengguna. Selain itu, apabila bilangan terminal pengguna dalam sel meningkat, jumlah peningkatan dalam daya pengeluaran berkurangan. Apabila bilangan terminal pengguna yang diperuntukkan meningkat, lebih banyak terminal pengguna diperuntukkan ke tepi sel, yang mengurangkan daya pemprosesan purata.
Masahito YATA
Keio University
Go OTSURU
Keio University
Yukitoshi SANADA
Keio University
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Salinan
Masahito YATA, Go OTSURU, Yukitoshi SANADA, "User Scheduling with Beam Selection for Full Digital Massive MIMO Base Station" in IEICE TRANSACTIONS on Communications,
vol. E104-B, no. 4, pp. 428-435, April 2021, doi: 10.1587/transcom.2020EBP3032.
Abstract: In this paper, user scheduling with beam selection for full-digital massive multi-input multi-output (MIMO) is proposed. Inter-user interference (IUI) can be canceled by precoding such as zero-forcing at a massive MIMO base station if ideal hardware implementation is assumed. However, owing to the non-ideal characteristics of hardware components, IUI occurs among multiple user terminals allocated on the same resource. Thus, in the proposed scheme, the directions of beams for allocated user terminals are adjusted to maximize the total user throughput. User allocation based on the user throughput after the adjustment of beam directivity is then carried out. Numerical results obtained through computer simulation show that when the number of user terminals in the cell is two and the number of user terminals allocated to one resource block (RB) is two, the throughput per subcarrier per subframe improves by about 3.0 bits. On the other hand, the fairness index (FI) is reduced by 0.03. This is because only the probability in the high throughput region increases as shown in the cumulative distribution function (CDF) of throughput per user. Also, as the number of user terminals in the cell increases, the amount of improvement in throughput decreases. As the number of allocated user terminals increases, more user terminals are allocated to the cell-edge, which reduces the average throughput.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2020EBP3032/_p
Salinan
@ARTICLE{e104-b_4_428,
author={Masahito YATA, Go OTSURU, Yukitoshi SANADA, },
journal={IEICE TRANSACTIONS on Communications},
title={User Scheduling with Beam Selection for Full Digital Massive MIMO Base Station},
year={2021},
volume={E104-B},
number={4},
pages={428-435},
abstract={In this paper, user scheduling with beam selection for full-digital massive multi-input multi-output (MIMO) is proposed. Inter-user interference (IUI) can be canceled by precoding such as zero-forcing at a massive MIMO base station if ideal hardware implementation is assumed. However, owing to the non-ideal characteristics of hardware components, IUI occurs among multiple user terminals allocated on the same resource. Thus, in the proposed scheme, the directions of beams for allocated user terminals are adjusted to maximize the total user throughput. User allocation based on the user throughput after the adjustment of beam directivity is then carried out. Numerical results obtained through computer simulation show that when the number of user terminals in the cell is two and the number of user terminals allocated to one resource block (RB) is two, the throughput per subcarrier per subframe improves by about 3.0 bits. On the other hand, the fairness index (FI) is reduced by 0.03. This is because only the probability in the high throughput region increases as shown in the cumulative distribution function (CDF) of throughput per user. Also, as the number of user terminals in the cell increases, the amount of improvement in throughput decreases. As the number of allocated user terminals increases, more user terminals are allocated to the cell-edge, which reduces the average throughput.},
keywords={},
doi={10.1587/transcom.2020EBP3032},
ISSN={1745-1345},
month={April},}
Salinan
TY - JOUR
TI - User Scheduling with Beam Selection for Full Digital Massive MIMO Base Station
T2 - IEICE TRANSACTIONS on Communications
SP - 428
EP - 435
AU - Masahito YATA
AU - Go OTSURU
AU - Yukitoshi SANADA
PY - 2021
DO - 10.1587/transcom.2020EBP3032
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E104-B
IS - 4
JA - IEICE TRANSACTIONS on Communications
Y1 - April 2021
AB - In this paper, user scheduling with beam selection for full-digital massive multi-input multi-output (MIMO) is proposed. Inter-user interference (IUI) can be canceled by precoding such as zero-forcing at a massive MIMO base station if ideal hardware implementation is assumed. However, owing to the non-ideal characteristics of hardware components, IUI occurs among multiple user terminals allocated on the same resource. Thus, in the proposed scheme, the directions of beams for allocated user terminals are adjusted to maximize the total user throughput. User allocation based on the user throughput after the adjustment of beam directivity is then carried out. Numerical results obtained through computer simulation show that when the number of user terminals in the cell is two and the number of user terminals allocated to one resource block (RB) is two, the throughput per subcarrier per subframe improves by about 3.0 bits. On the other hand, the fairness index (FI) is reduced by 0.03. This is because only the probability in the high throughput region increases as shown in the cumulative distribution function (CDF) of throughput per user. Also, as the number of user terminals in the cell increases, the amount of improvement in throughput decreases. As the number of allocated user terminals increases, more user terminals are allocated to the cell-edge, which reduces the average throughput.
ER -