Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies
if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the
same subfield and year (this is the minimum needed to enter the top 1%, not the average
within it), or reaches the top citation threshold in at least one of its specific research
topics.
Image-sensor-based visible light communication for automotive applications
2014311 citationsTakaya Yamazato, Hiraku Okada et al.profile →
Peers — A (Enhanced Table)
Peers by citation overlap · career bar shows stage (early→late)
cites ·
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This map shows the geographic impact of Hiraku Okada'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 Hiraku Okada with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hiraku Okada more than expected).
This network shows the impact of papers produced by Hiraku Okada. 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 Hiraku Okada. The network helps show where Hiraku Okada may publish in the future.
Co-authorship network of co-authors of Hiraku Okada
This figure shows the co-authorship network connecting the top 25 collaborators of Hiraku Okada.
A scholar is included among the top collaborators of Hiraku Okada 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 Hiraku Okada. Hiraku Okada is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Naila, Chedlia Ben, Hiraku Okada, & Masaaki Katayama. (2021). Indoor Long Distance High Speed Imaging MIMO System With Linear Transmitting Element Array. IEICE Technical Report; IEICE Tech. Rep.. 120(412). 171–175.
Kobayashi, Kentaro, et al.. (2018). Experimental evaluation of an optical wireless MIMO system with baseband modulation. IEICE Technical Report; IEICE Tech. Rep.. 118(125). 165–169.2 indexed citations
8.
Kobayashi, Kentaro, et al.. (2017). Experimental evaluation of element spacing in indoor optical wireless MIMO systems. IEICE Technical Report; IEICE Tech. Rep.. 117(234). 51–55.1 indexed citations
9.
Okada, Hiraku, et al.. (2017). A Comparison of Transmission Methods to Accelerate Data Rate for Image Sensor Based Visible Light Communication in Intelligent Transport Systems. IEICE Technical Report; IEICE Tech. Rep.. 117(103). 115–120.1 indexed citations
10.
Yamamoto, Yusuke, Kentaro Kobayashi, Hiraku Okada, & Masaaki Katayama. (2016). Influence of spread codes on the performance of the wireless optical CDMA system with variable threshold hard limiters. IEICE Technical Report; IEICE Tech. Rep.. 116(236). 47–52.1 indexed citations
Okada, Hiraku, et al.. (2014). LED Array Acquisition Method Based on Time-gradient and Space-gradient Values for Road to Vehicle Visible Light Communication Using High-Speed Camera. IEICE Technical Report; IEICE Tech. Rep.. 113(433). 55–60.1 indexed citations
13.
Okada, Hiraku, et al.. (2012). Cancellation Method for Intersymbol Interference on Road-to-Vehicle Visible Light Communication using LED Array and High-Speed Camera. 111(441). 129–134.1 indexed citations
Okada, Hiraku, et al.. (2005). A Macro and Micro Diversity Scheme with Relay Terminals for Reliable Wireless Control. IEICE Technical Report; IEICE Tech. Rep.. 105(121). 7–12.
19.
Okada, Hiraku, et al.. (1998). Queueing Analysis of CDMA Unslotted ALOHA Systems with Finite Buffers. IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences. 81(10). 2083–2091.
20.
Sato, Takeshi, et al.. (1996). Effects of the Access Timing Delay on CDMA Unslotted ALOHA with Channel Load Sensing (Special Issue on Personal Communications). IEICE Transactions on Communications. 79(9). 1339–1345.2 indexed citations
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.