Hirotaka Ujikawa

914 total citations
43 papers, 753 citations indexed

About

Hirotaka Ujikawa is a scholar working on Electrical and Electronic Engineering, Computer Networks and Communications and Control and Systems Engineering. According to data from OpenAlex, Hirotaka Ujikawa has authored 43 papers receiving a total of 753 indexed citations (citations by other indexed papers that have themselves been cited), including 35 papers in Electrical and Electronic Engineering, 20 papers in Computer Networks and Communications and 1 paper in Control and Systems Engineering. Recurrent topics in Hirotaka Ujikawa's work include Advanced Optical Network Technologies (26 papers), Advanced Photonic Communication Systems (23 papers) and Optical Network Technologies (15 papers). Hirotaka Ujikawa is often cited by papers focused on Advanced Optical Network Technologies (26 papers), Advanced Photonic Communication Systems (23 papers) and Optical Network Technologies (15 papers). Hirotaka Ujikawa collaborates with scholars based in Japan, China and Canada. Hirotaka Ujikawa's co-authors include Ken-Ichi Suzuki, Nei Kato, Jiajia Liu, Hiroki Nishiyama, Naoto Yoshimoto, Shangwei Zhang, Jun‐ichi Kani, Hongzhi Guo, Ryogo Kubo and Takeshi Sakamoto and has published in prestigious journals such as IEEE Communications Surveys & Tutorials, Journal of Lightwave Technology and IEEE Internet of Things Journal.

In The Last Decade

Hirotaka Ujikawa

38 papers receiving 734 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Hirotaka Ujikawa Japan 13 638 382 29 28 26 43 753
Matthew Gast 6 370 0.6× 519 1.4× 19 0.7× 30 1.1× 37 1.4× 8 610
Georgios P. Koudouridis Sweden 13 449 0.7× 384 1.0× 18 0.6× 25 0.9× 39 1.5× 64 565
Irina Balan Germany 11 593 0.9× 552 1.4× 21 0.7× 14 0.5× 23 0.9× 17 668
Satish C. Jha Canada 13 639 1.0× 457 1.2× 17 0.6× 25 0.9× 20 0.8× 30 737
Lars Christoph Schmelz Germany 11 299 0.5× 311 0.8× 29 1.0× 15 0.5× 37 1.4× 25 402
Cinzia Sartori Germany 7 330 0.5× 422 1.1× 30 1.0× 11 0.4× 29 1.1× 10 518
Dionysis Xenakis Greece 13 409 0.6× 435 1.1× 37 1.3× 24 0.9× 15 0.6× 38 528
Kléber V. Cardoso Brazil 14 252 0.4× 401 1.0× 73 2.5× 21 0.8× 22 0.8× 73 517
Delia Ciullo Italy 17 1.0k 1.6× 1.0k 2.7× 26 0.9× 48 1.7× 15 0.6× 28 1.3k
Nico Bayer Germany 14 458 0.7× 656 1.7× 32 1.1× 12 0.4× 16 0.6× 43 704

Countries citing papers authored by Hirotaka Ujikawa

Since Specialization
Citations

This map shows the geographic impact of Hirotaka Ujikawa's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Hirotaka Ujikawa with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hirotaka Ujikawa more than expected).

Fields of papers citing papers by Hirotaka Ujikawa

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Hirotaka Ujikawa. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Hirotaka Ujikawa. The network helps show where Hirotaka Ujikawa may publish in the future.

Co-authorship network of co-authors of Hirotaka Ujikawa

This figure shows the co-authorship network connecting the top 25 collaborators of Hirotaka Ujikawa. A scholar is included among the top collaborators of Hirotaka Ujikawa based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Hirotaka Ujikawa. Hirotaka Ujikawa is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
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Miyamoto, Kenji, et al.. (2024). User-dedicated optical path switching with optical-wireless cooperative control for low-latency and seamless handover. Journal of Optical Communications and Networking. 16(10). 1050–1050. 1 indexed citations
3.
Ujikawa, Hirotaka, et al.. (2024). A Measurement Method Using Packets for Measuring the Processing Time of Edge and Cloud Applications. IEICE Communications Express. 13(11). 426–430.
4.
Ujikawa, Hirotaka, et al.. (2023). Time distancing to avoid network microbursts from drones’ high-definition video streams. IEICE Communications Express. 12(4). 126–131. 2 indexed citations
5.
Asaka, Kota, Hirotaka Ujikawa, Hirotaka Nakamura, et al.. (2018). Disaggregation of Time-Critical Applications in Flexible Access System Architecture [Invited]. Journal of Optical Communications and Networking. 11(1). A33–A33. 6 indexed citations
6.
Asaka, Kota & Hirotaka Ujikawa. (2018). Standardization Trends of Virtualized Access Systems by the Broadband Forum. NTT technical review. 16(7). 44–49. 2 indexed citations
7.
Asaka, Kota, Hirotaka Ujikawa, Jun‐ichi Kani, & Akihiro Otaka. (2018). Flexible Access System Architecture (FASA). Optical Fiber Communication Conference. Tu3L.7–Tu3L.7. 6 indexed citations
8.
Kani, Jun‐ichi, et al.. (2017). Flexible Access System Architecture to Support Diverse Requirements and Agile Service Creation. 1–3. 8 indexed citations
9.
Ujikawa, Hirotaka, et al.. (2017). Dynamic software updating of OLTs without service interruption. 1–5. 1 indexed citations
10.
Nakayama, Yu, Daisuke Hisano, Hirotaka Ujikawa, et al.. (2017). Efficient DWBA Algorithm for TWDM-PON with Mobile Fronthaul in 5G Networks. 1–6. 23 indexed citations
11.
Ujikawa, Hirotaka, et al.. (2016). New Access System Architecture (FASA)--Enabling Provision of Services Flexibly and Promptly. NTT technical review. 14(10). 18–23. 14 indexed citations
12.
Ujikawa, Hirotaka, Tomoko Shibata, & Ken-Ichi Suzuki. (2015). Issues and Solutions in Saving Energy of Optical Access Network Equipment. NTT technical review. 13(3). 34–39.
13.
Suto, Katsuya, Zubair Md. Fadlullah, Hiroki Nishiyama, et al.. (2015). A cloud radio access network with power over fiber toward 5G networks: QoE-guaranteed design and operation. IEEE Wireless Communications. 22(4). 58–64. 33 indexed citations
14.
Ujikawa, Hirotaka, Takashi Yamada, Ken-Ichi Suzuki, et al.. (2015). Stand-Alone and Cooperative Deep Sleep for Battery-Driven Optical Network Unit. IEEE Internet of Things Journal. 3(4). 494–502. 8 indexed citations
15.
Ujikawa, Hirotaka, et al.. (2014). Power-saving Technologies for Network Equipment and Their Application--ONU/wireless-LAN Sleep Technologies. NTT technical review. 12(3). 29–36. 6 indexed citations
16.
Fadlullah, Zubair Md., Hiroki Nishiyama, Yuichi Kawamoto, et al.. (2013). Cooperative QoS Control Scheme Based on Scheduling Information in FiWi Access Network. IEEE Transactions on Emerging Topics in Computing. 1(2). 375–383. 26 indexed citations
17.
Ujikawa, Hirotaka, Takashi Yamada, & Naoto Yoshimoto. (2013). Demonstration of timer-based ONU deep sleep for emergency communication during power failure. 2413–2417. 4 indexed citations
18.
Saito, Kei, Hiroki Nishiyama, Nei Kato, et al.. (2013). Improving the performance of FiWi networks through collaboration between ONU and APs. 4830–4834. 5 indexed citations
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Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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