Hiroshi Oguma

According to our database, Hiroshi Oguma authored at least 45 papers between 2003 and 2024.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of five.

2024

FTM Implementation and Ranging Performance Characterization for Indoor Localization.

Rei Hirata, Atsushi Koizumi, Hiroshi Oguma, Naotaka Sakaguchi, Takenori Sumi, Yukimasa Nagai

Proceedings of the 13th IEEE Global Conference on Consumer Electronics, 2024

2023

Evaluation of Satellite Signal Reception Error by Sky View Factor for QZSS Short Message SS-CDMA Communication System.

Hiroto Kita, Hiroshi Oguma, Suguru Kameda, Noriharu Suematsu

Proceedings of the 14th International Conference on Information and Communication Technology Convergence, 2023

2022

Evaluation of Transmission Timing Control Error for QZSS Short Message SS-CDMA Communication System.

Hiroshi Oguma, Rei Kawai, Suguru Kameda, Noriharu Suematsu

Proceedings of the Thirteenth International Conference on Ubiquitous and Future Networks, 2022

2020

System Implementation of Synchronized SS-CDMA for QZSS Safely Confirmation System.

Hiroshi Oguma, Rei Kawai, T. Asai, Suguru Kameda, Mizuki Motoyoshi, Noriharu Suematsu

Proceedings of the International Conference on Information and Communication Technology Convergence, 2020

2019

Random Access Control Scheme with Reservation Channel for Capacity Expansion of QZSS Safety Confirmation System.

Suguru Kameda, Kei Ohya, Tomohide Takahashi, Hiroshi Oguma, Noriharu Suematsu

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2019

Experimental Evaluation of Synchronized SS-CDMA Transmission Timing Control Method for QZSS Short Message Communication.

Suguru Kameda, Kei Ohya, Hiroshi Oguma, Noriharu Suematsu

IEICE Trans. Commun., 2019

Experimental Analysis of Positioning Accuracy of GPS/BeiDou on Elevation Mask.

Ren Shinozaki, Hiroshi Oguma, Suguru Kameda, Noriharu Suematsu

Proceedings of the 2019 International Conference on Information and Communication Technology Convergence, 2019

2017

Feasibility study of expansion of OpenFlow network using satellite communication to wide area.

Nagahiro Yoshino, Hiroshi Oguma, Suguru Kameda, Noriharu Suematsu

Proceedings of the Ninth International Conference on Ubiquitous and Future Networks, 2017

Experimental evaluation of transmission timing control method for QZSS short message synchronized SS-CDMA communication.

Kei Ohya, Suguru Kameda, Hiroshi Oguma, Noriharu Suematsu

Proceedings of the Ninth International Conference on Ubiquitous and Future Networks, 2017

Influence of multi path on positioning accuracy in a low sky view factor environment.

Sho Tatsuguchi, Yuta Oshima, Hiroshi Oguma, Suguru Kameda, Noriharu Suematsu

Proceedings of the International Conference on Information and Communication Technology Convergence, 2017

Estimation of energy self-sufficiency rate by EMS simulation using SPICE.

Yuta Oshima, Iwao Mizumoto, Hiroshi Oguma, Noboru Ishihara, Kazuya Masu

Proceedings of the International Conference on Information and Communication Technology Convergence, 2017

Construction of transmission timing control system using FPGA for QZSS short message synchronized SS-CDMA communication.

Rei Kawai, Hiroshi Oguma, Suguru Kameda, Noriharu Suematsu

Proceedings of the International Conference on Information and Communication Technology Convergence, 2017

2016

Efficient random access control scheme with reservation channel for QZSS short message SS-CDMA communication.

Kei Ohya, Tomohide Takahashi, Suguru Kameda, Hiroshi Oguma, Akinori Taira, Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchi

Proceedings of the IEEE Wireless Communications and Networking Conference, 2016

Experimental evaluation of timing synchronization accuracy for QZSS short message synchronized SS-CDMA communication.

Kei Ohya, Suguru Kameda, Hiroshi Oguma, Akinori Taira, Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchi

Proceedings of the 27th IEEE Annual International Symposium on Personal, 2016

Simulation and evaluation of PV power generation for energy management system using SPICE.

Yuta Oshima, Hiroshi Oguma, Noboru Ishihara, Kazuya Masu

Proceedings of the International Conference on Information and Communication Technology Convergence, 2016

Development of the hazard-map utilization support system for flooding with location information.

Hiroshi Oguma, Sota Matsuura, Konatsu Suehiro, Yuta Oshima, Sho Tatsuguchi, Atsushi Koizumi

Proceedings of the International Conference on Information and Communication Technology Convergence, 2016

2015

High efficient network selection scheme using location information for heterogeneous wireless system.

Junpei Kuboniwa, Yuji Miyake, Suguru Kameda, Akinori Taira, Hiroshi Oguma, Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchi

Proceedings of the 2015 IEEE Wireless Communications and Networking Conference Workshops, 2015

Measured evaluation of positioning accuracy on GNSS for heterogeneous wireless system.

Hiroshi Oguma, Keita Norishima, Konatsu Suehiro, Suguru Kameda, Noriharu Suematsu

Proceedings of the International Conference on Information and Communication Technology Convergence, 2015

2013

Measured Downlink Throughput Performance of MBWA System in Urban Area.

Suguru Kameda, Hiroshi Oguma, Noboru Izuka, Yasuyoshi Asano, Yoshiharu Yamazaki, Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchi

IEICE Trans. Commun., 2013

Large-capacity QZSS location and short message system using Frame Slotted ALOHA with Flag Method.

Tomohide Takahashi, Yuji Miyake, Fumihiro Yamagata, Hiroshi Oguma, Suguru Kameda, Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchi

Proceedings of the 24th IEEE Annual International Symposium on Personal, 2013

ASIC implementation of multimode frequency domain equalizer for heterogeneous wireless system.

Yuji Miyake, Kazuhiro Komatsu, Hiroshi Oguma, Noboru Izuka, Suguru Kameda, Makoto Iwata, Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchi

Proceedings of the 24th IEEE Annual International Symposium on Personal, 2013

2012

Proposal of Heterogeneous Wireless Network with Handover in Application Layer: Feasibility Study Based on Field Trial Results.

Suguru Kameda, Hiroshi Oguma, Noboru Izuka, Fumihiro Yamagata, Yasuyoshi Asano, Yoshiharu Yamazaki, Shoichi Tanifuji, Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchi

IEICE Trans. Commun., 2012

Hybrid single-carrier and multi-carrier system: Evaluation of throughput with inter-cell interference.

Yuji Miyake, Fumihiro Yamagata, Hiroshi Oguma, Noboru Izuka, Suguru Kameda, Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchi

Proceedings of the 23rd IEEE International Symposium on Personal, 2012

2011

Hybrid single-carrier and multi-carrier system: Widening uplink coverage with optimally selecting SDM or join FDE/antenna diversity.

Yuji Miyake, Kazumasa Kobayashi, Kazuhiro Komatsu, Shoichi Tanifuji, Hiroshi Oguma, Noboru Izuka, Suguru Kameda, Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchi

Proceedings of the 14th International Symposium on Wireless Personal Multimedia Communications, 2011

Coverage estimation of uplink 64 QAM signal up to 20 MHz bandwidth based on field trial results: coverage issue of broadband uplink signal.

Suguru Kameda, Hiroshi Oguma, Noboru Izuka, Yasuyoshi Asano, Yoshiharu Yamazaki, Kazuhiro Komatsu, Shoichi Tanifuji, Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchi

Proceedings of the 14th International Symposium on Wireless Personal Multimedia Communications, 2011

Proposal of heterogeneous wireless communication network with soft handover in application layer: Feasibility study based on field trial results.

Suguru Kameda, Hiroshi Oguma, Noboru Izuka, Fumihiro Yamagata, Yasuyoshi Asano, Yoshiharu Yamazaki, Shoichi Tanifuji, Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchi

Proceedings of the 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, 2011

2010

Coverage Estimation of Uplink 16 QAM Signal up to 20 MHz Bandwidth Based on Field Trial Results of FH-OFDMA System.

Hiroshi Oguma, Suguru Kameda, Tadashi Takagi, Kazuo Tsubouchi, Noboru Izuka, Yasuyoshi Asano, Yoshiharu Yamazaki

Proceedings of the 2010 IEEE Wireless Communications and Networking Conference, 2010

Hybrid single-carrier and multi-carrier system: Improving uplink throughput with optimally switching modulation.

Shunsuke Tomita, Yuji Miyake, Ikuro Kashiwamura, Kazuhiro Komatsu, Ngoc Hao Tran, Hiroshi Oguma, Noboru Izuka, Suguru Kameda, Tadashi Takagi, Kazuo Tsubouchi

Proceedings of the IEEE 21st International Symposium on Personal, 2010

2009

Uplink throughput performance of FH-OFDMA improved by 16 QAM: Effect estimation and validation in MBWA system field trial.

Hiroshi Oguma, Suguru Kameda, Tadashi Takagi, Kazuo Tsubouchi, Noboru Izuka, Yasuyoshi Asano, Yoshiharu Yamazaki

Proceedings of the IEEE 20th International Symposium on Personal, 2009

Investigation on single-carrier and multi-carrier hybrid system for uplink.

Ikuro Kashiwamura, Shunsuke Tomita, Kazuhiro Komatsu, Ngoc Hao Tran, Hiroshi Oguma, Noboru Izuka, Suguru Kameda, Tadashi Takagi, Kazuo Tsubouchi

Proceedings of the IEEE 20th International Symposium on Personal, 2009

2008

5GHz Si-CMOS differential power amplifier module with directly connected dipole antenna.

Kazuya Shimoyama, Satoshi Yoshida, Tuan Thanh Ta, Keisuke Matsuzaki, Hiroshi Oguma, Suguru Kameda, Hiroyuki Nakase, Tadashi Takagi, Kazuo Tsubouchi

IEICE Electron. Express, 2008

First-Ever Report on MBWA System Field Trial: Interference Issue in Sectored Cell Layout.

Noboru Izuka, Yasuyoshi Asano, Yoshiharu Yamazaki, Hiroshi Oguma, Suguru Kameda, Tohoku Takagi, Kazuo Tsubouchi

Proceedings of the 68th IEEE Vehicular Technology Conference, 2008

Improvement of bit error rate using channel interleaving for channel binding WLAN prototype.

Hiroyuki Nakase, Hiroshi Oguma, Suguru Kameda, Tadashi Takagi, Kazuo Tsubouchi, Mari Ochiai, Yukimasa Nagai, Akinori Fujimura, Yoji Isota

Proceedings of the IEEE 19th International Symposium on Personal, 2008

A SINR estimation for closed-loop link adaptation of 324 Mbit/sec WLAN system.

Yukimasa Nagai, Akinori Fujimura, Masaya Akihara, Hiroyuki Nakase, Suguru Kameda, Hiroshi Oguma, Kazuo Tsubouchi

Proceedings of the IEEE 19th International Symposium on Personal, 2008

Measured downlink throughput performance of MBWA system in urban area.

Hiroshi Oguma, Suguru Kameda, Noboru Izuka, Yasuyoshi Asano, Yoshiharu Yamazaki, Tadashi Takagi, Kazuo Tsubouchi

Proceedings of the 2008 5th International Symposium on Wireless Communication Systems, 2008

2007

The 60GHz Band Multi-Carrier Wireless System for 2Gbps Transmission with Constant Envelope Modulation.

Shoichi Oshima, Goro Mori, Hiroshi Oguma, Suguru Kameda, Hiroyuki Nakase, Tadashi Takagi, Kazuo Tsubouchi

Proceedings of the IEEE 18th International Symposium on Personal, 2007

A Closed-Loop Link Adaptation Scheme for 324Mbit/sec WLAN System.

Yukimasa Nagai, Akinori Fujimura, Masaya Akihara, Yoshihiko Shirokura, Fumio Ishizu, Hiroyuki Nakase, Suguru Kameda, Hiroshi Oguma, Kazuo Tsubouchi

Proceedings of the IEEE 18th International Symposium on Personal, 2007

Evaluation of High-Speed and Large-Capacity RFID Inventory Method using 1-Bit Flag.

Suguru Kameda, Satoru Fukuyo, Atsuyoshi Yamaguchi, Hiroshi Oguma, Hiroyuki Nakase, Tadashi Takagi, Kazuo Tsubouchi

Proceedings of the IEEE 18th International Symposium on Personal, 2007

Demonstration of HDTV Transmission Using 324Mbps WLAN Equipment.

Yukimasa Nagai, Akinori Fujimura, Yoshihiko Shirokura, Fumio Ishizu, Hiroyuki Nakase, Suguru Kameda, Hiroshi Oguma, Kazuo Tsubouchi

Proceedings of the 4th IEEE Consumer Communications and Networking Conference, 2007

2006

324Mbps WLAN Equipment with MAC Frame Aggregation for High MAC-SAP Throughput.

Yukimasa Nagai, Akinori Fujimura, Yoshihiko Shirokura, Yoji Isota, Fumio Ishizu, Hiroyuki Nakase, Suguru Kameda, Hiroshi Oguma, Kazuo Tsubouchi

J. Commun., 2006

Implementation of 324Mbit/sec WLAN equipment.

Hiroshi Oguma, Hiroyuki Nakase, Suguru Kameda, Kazuo Tsubouchi, Mari Ochiai, Yukimasa Nagai, Akinori Fujimura, Yoji Isota, Fumio Ishizu

Proceedings of the IEEE 17th International Symposium on Personal, 2006

324Mbps WLAN equipment with MAC frame aggregation.

Yukimasa Nagai, Akinori Fujimura, Yoshihiko Shirokura, Yoji Isota, Fumio Ishizu, Hiroyuki Nakase, Suguru Kameda, Hiroshi Oguma, Kazuo Tsubouchi

Proceedings of the IEEE 17th International Symposium on Personal, 2006

High-Speed and Large-Capacity RFID Inventory Method Using 1-Bit Flag.

Suguru Kameda, Atsuyoshi Yamaguchi, Satoru Fukuyo, Hiroshi Oguma, Hiroyuki Nakase, Tadashi Takagi, Kazuo Tsubouchi

Proceedings of the 3rd IEEE International Symposium on Wireless Communication Systems, 2006

Implementation of 324Mbps WLAN equipment with MAC frame aggregation for high MAC-SAP throughput.

Yukimasa Nagai, Yoshihiko Shirokura, Hiroyuki Nakase, Hiroshi Oguma, Yoji Isota, Fumio Ishizu, Kazuo Tsubouchi

Proceedings of the 3rd IEEE Consumer Communications and Networking Conference, 2006

2003

Packet SS-CDMA modem with carrier frequency offset compensation.

Atsuyoshi Yamaguchi, J. Takagi, Hiroshi Oguma, Seong-Kweon Kim, Suguru Kameda, Hiroyuki Nakase, Yoji Isota, Kazuo Tsubouchi

Proceedings of the IEEE 14th International Symposium on Personal, 2003