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Journal Articles
- 2024
[j57]Masaaki Ito
, Shuto Fukue, Kengo Ando, Issei Kanno, Kosuke Yamazaki, Koji Ishibashi:
Clustering and Beamforming for User-Centric Cell-Free Massive MIMO With Backhaul Capacity Limitation. IEEE Access 12: 382-395 (2024)- [j56]Nann Win Moe Thet, Koji Ishibashi:
User-Centric Resource Allocation in Downlink Multi-Carrier NOMA System With Coexistence of URLLC and eMBB Users. IEEE Trans. Veh. Technol. 73(8): 11209-11223 (2024) - [j55]Sota Uchimura, Koji Ishibashi, Hiroki Iimori, Paulo Valente Klaine, Szabolcs Malomsoky:
Efficient Channel Tracking Based on Compressive Sensing for OFDM Millimeter-Wave Systems. IEEE Trans. Veh. Technol. 73(8): 11411-11426 (2024) - [j54]Sota Uchimura, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi:
Blockage-Robust Hybrid Beamforming Enabling High Sum Rate for Millimeter-Wave OFDM Systems. IEEE Trans. Wirel. Commun. 23(7): 7095-7110 (2024) - [j53]Takumi Takahashi, Hiroki Iimori, Koji Ishibashi, Shinsuke Ibi, Giuseppe Thadeu Freitas de Abreu:
Bayesian Bilinear Inference for Joint Channel Tracking and Data Detection in Millimeter-Wave MIMO Systems. IEEE Trans. Wirel. Commun. 23(9): 11136-11153 (2024) - 2023
- [j52]Yuma Katsuki, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi, Naoki Ishikawa:
Noncoherent Massive MIMO With Embedded One-Way Function Physical Layer Security. IEEE Trans. Inf. Forensics Secur. 18: 3158-3170 (2023) - [j51]Sota Uchimura, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi:
Outage-Minimization Coordinated Multi-Point for Millimeter-Wave OFDM With Random Blockages. IEEE Trans. Veh. Technol. 72(7): 8783-8796 (2023) - [j50]Takumi Takahashi, Hiroki Iimori, Kengo Ando, Koji Ishibashi, Shinsuke Ibi, Giuseppe Thadeu Freitas de Abreu:
Bayesian Receiver Design via Bilinear Inference for Cell-Free Massive MIMO With Low-Resolution ADCs. IEEE Trans. Wirel. Commun. 22(7): 4756-4772 (2023) - [j49]Yuma Katsuki, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi, Naoki Ishikawa:
A New Noncoherent Gaussian Signaling Scheme for Low Probability of Detection Communications. IEEE Wirel. Commun. Lett. 12(3): 545-549 (2023) - 2022
- [j48]Shuto Fukue, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi:
Joint Access Configuration and Beamforming for Cell-Free Massive MIMO Systems With Dynamic TDD. IEEE Access 10: 40130-40149 (2022) - [j47]Jun Nagai, Koji Ishibashi, Yasushi Yamao:
Signal Quality Improvement in Downlink Power Domain NOMA with Blind Nonlinear Compensator and Frequency Domain Equalizer. IEICE Trans. Commun. 105-B(5): 648-656 (2022) - [j46]Koji Ishibashi, Takanori Hara, Sota Uchimura, Tetsuya Iye, Yoshimi Fujii, Takahide Murakami, Hiroyuki Shinbo:
User-Centric Design of Millimeter Wave Communications for Beyond 5G and 6G. IEICE Trans. Commun. 105-B(10): 1117-1129 (2022) - [j45]Kengo Ando, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi:
User-Heterogeneous Cell-Free Massive MIMO Downlink and Uplink Beamforming via Tensor Decomposition. IEEE Open J. Commun. Soc. 3: 740-758 (2022) - [j44]Hiroki Iimori, Takumi Takahashi, Koji Ishibashi, Giuseppe Thadeu Freitas de Abreu, David González G., Osvaldo Gonsa:
Joint Activity and Channel Estimation for Extra-Large MIMO Systems. IEEE Trans. Wirel. Commun. 21(9): 7253-7270 (2022) - [j43]Takanori Hara, Koji Ishibashi:
Blind Multiple Measurement Vector AMP Based on Expectation Maximization for Grant-Free NOMA. IEEE Wirel. Commun. Lett. 11(6): 1201-1205 (2022) - 2021
- [j42]Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Omid Taghizadeh, Razvan-Andrei Stoica, Takanori Hara, Koji Ishibashi:
A Stochastic Gradient Descent Approach for Hybrid mmWave Beamforming With Blockage and CSI-Error Robustness. IEEE Access 9: 74471-74487 (2021) - [j41]Takanori Hara, Ryuhei Takahashi, Koji Ishibashi:
Ambient OFDM Pilot-Aided Backscatter Communications: Concept and Design. IEEE Access 9: 89210-89221 (2021) - [j40]Kengo Ando, Hiroki Iimori, Takumi Takahashi, Koji Ishibashi, Giuseppe Thadeu Freitas de Abreu:
Uplink Signal Detection for Scalable Cell-Free Massive MIMO Systems With Robustness to Rate-Limited Fronthaul. IEEE Access 9: 102770-102782 (2021) - [j39]Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Takanori Hara, Koji Ishibashi, Razvan-Andrei Stoica, David González G., Osvaldo Gonsa:
Robust Symbol Detection in Large-Scale Overloaded NOMA Systems. IEEE Open J. Commun. Soc. 2: 512-533 (2021) - [j38]Hiroki Iimori, Takumi Takahashi, Koji Ishibashi, Giuseppe Thadeu Freitas de Abreu, Wei Yu:
Grant-Free Access via Bilinear Inference for Cell-Free MIMO With Low-Coherence Pilots. IEEE Trans. Wirel. Commun. 20(11): 7694-7710 (2021) - [j37]Takanori Hara, Hiroki Iimori, Koji Ishibashi:
Hyperparameter-Free Receiver for Grant-Free NOMA Systems With MIMO-OFDM. IEEE Wirel. Commun. Lett. 10(4): 810-814 (2021) - [j36]Andre Saito Guerreiro, Hiroki Iimori, Koji Ishibashi:
Low Latency Beam-Sweeping for Millimeter Wave Systems via Pessimistic Optimization. IEEE Wirel. Commun. Lett. 10(12): 2742-2746 (2021) - 2020
- [j35]Naoya Hirosawa, Hiroki Iimori, Koji Ishibashi, Giuseppe Thadeu Freitas de Abreu:
Minimizing Age of Information in Energy Harvesting Wireless Sensor Networks. IEEE Access 8: 219934-219945 (2020) - [j34]Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Omid Taghizadeh, Razvan-Andrei Stoica, Takanori Hara, Koji Ishibashi:
Stochastic Learning Robust Beamforming for Millimeter-Wave Systems With Path Blockage. IEEE Wirel. Commun. Lett. 9(9): 1557-1561 (2020) - 2019
- [j33]Shun Ogata, Koji Ishibashi:
Application of ZigZag Decoding in Frameless ALOHA. IEEE Access 7: 39528-39538 (2019) - [j32]Razvan-Andrei Stoica, Giuseppe Thadeu Freitas de Abreu, Takanori Hara, Koji Ishibashi:
Massively Concurrent Non-Orthogonal Multiple Access for 5G Networks and Beyond. IEEE Access 7: 82080-82100 (2019) - [j31]Siddhartha Sarma, Koji Ishibashi:
Time-to-Recharge Analysis for Energy-Relay-Assisted Energy Harvesting. IEEE Access 7: 139924-139937 (2019) - [j30]Razvan-Andrei Stoica, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi:
Frame Theory and Fractional Programming for Sparse Recovery-Based mmWave Channel Estimation. IEEE Access 7: 150757-150774 (2019) - [j29]Masaru Oinaga, Shun Ogata, Koji Ishibashi:
Design of Coded ALOHA With ZigZag Decoder. IEEE Access 7: 168527-168535 (2019) - [j28]Takanori Hara, Koji Ishibashi:
Grant-Free Non-Orthogonal Multiple Access With Multiple-Antenna Base Station and Its Efficient Receiver Design. IEEE Access 7: 175717-175726 (2019) - [j27]Massimo Giordano, Giorgio Cristiano, Koji Ishibashi, Stefano Ambrogio, Hsinyu Tsai, Geoffrey W. Burr, Pritish Narayanan:
Analog-to-Digital Conversion With Reconfigurable Function Mapping for Neural Networks Activation Function Acceleration. IEEE J. Emerg. Sel. Topics Circuits Syst. 9(2): 367-376 (2019) - [j26]Manato Takai, Koji Ishibashi:
Repeat-Accumulate Signal Codes. IEEE Trans. Commun. 67(4): 2607-2619 (2019) - 2018
- [j25]Shun Ogata, Koji Ishibashi, Giuseppe Thadeu Freitas de Abreu:
Optimized Frameless ALOHA for Cooperative Base Stations With Overlapped Coverage Areas. IEEE Trans. Wirel. Commun. 17(11): 7486-7499 (2018) - 2017
- [j24]Hiroki Kawabata, Koji Ishibashi, Satyanarayana Vuppala, Giuseppe Thadeu Freitas de Abreu:
Robust Relay Selection for Large-Scale Energy-Harvesting IoT Networks. IEEE Internet Things J. 4(2): 384-392 (2017) - [j23]Vien V. Mai, Won-Yong Shin, Koji Ishibashi:
Wireless Power Transfer for Distributed Estimation in Sensor Networks. IEEE J. Sel. Top. Signal Process. 11(3): 549-562 (2017) - 2015
- [j22]Huifa Lin, Koji Ishibashi, Won-Yong Shin, Takeo Fujii:
A Simple Random Access Scheme With Multilevel Power Allocation. IEEE Commun. Lett. 19(12): 2118-2121 (2015) - [j21]Huifa Lin, Koji Ishibashi, Won-Yong Shin, Takeo Fujii:
Decentralized Multilevel Power Allocation for Random Access. IEICE Trans. Commun. 98-B(10): 1978-1987 (2015) - [j20]Jingze Dai, Koji Ishibashi, Yasushi Yamao:
Highly Efficient Multi-Hop Packet Transmission Using Intra-Flow Interference Cancellation and Maximal-Ratio Combining. IEEE Trans. Wirel. Commun. 14(11): 5998-6011 (2015) - [j19]Koji Ishibashi, Chin Keong Ho, Ioannis Krikidis:
Diversity-Multiplexing Tradeoff of Dynamic Harvest-and-Forward Cooperation. IEEE Wirel. Commun. Lett. 4(6): 633-636 (2015) - 2014
- [j18]Yuelin Ma, Yasushi Yamao, Yoshihiko Akaiwa, Koji Ishibashi:
Wideband Digital Predistortion Using Spectral Extrapolation of Band-Limited Feedback Signal. IEEE Trans. Circuits Syst. I Regul. Pap. 61-I(7): 2088-2097 (2014) - [j17]Koji Ishibashi, Shinya Sugiura:
Effects of Antenna Switching on Band-Limited Spatial Modulation. IEEE Wirel. Commun. Lett. 3(4): 345-348 (2014) - 2013
- [j16]Won-Yong Shin, Koji Ishibashi:
Hierarchical Cooperation in Ultra-Wide Band Ad Hoc Networks. IEICE Trans. Commun. 96-B(3): 887-890 (2013) - [j15]Koji Ishii, Koji Ishibashi:
Nested Transmit Diversity Based on a Joint Network-Channel Coding. IEICE Trans. Commun. 96-B(9): 2261-2269 (2013) - [j14]Koji Ishibashi, Won-Yong Shin, Hideki Ochiai, Vahid Tarokh:
A Peak Power Efficient Cooperative Diversity using Star-QAM with Coherent/Noncoherent Detection. IEEE Trans. Wirel. Commun. 12(5): 2137-2147 (2013) - 2012
- [j13]Won-Yong Shin, Koji Ishibashi:
Throughput Scaling of Ultra-Wide Band Ad Hoc Networks with Infrastructure. IEICE Trans. Commun. 95-B(9): 2918-2921 (2012) - [j12]Won-Yong Shin, Koji Ishibashi:
Effect of Multiple Antennas on the Transport Capacity in Large-Scale Ad Hoc Networks. IEICE Trans. Commun. 95-B(10): 3113-3119 (2012) - [j11]Kaiji Mukumoto, Shinsuke Nagata, Tadahiro Wada, Koji Ishibashi:
Proposal of Go-Back-i-symbol ARQ Scheme and its Performance Evaluation in Meteor Burst Communications. IEEE Trans. Commun. 60(8): 2336-2343 (2012) - [j10]Koji Ishibashi, Hideki Ochiai:
Analysis of Instantaneous Power Distributions for Non-Regenerative and Regenerative Relaying Signals. IEEE Trans. Wirel. Commun. 11(1): 258-265 (2012) - 2011
- [j9]Won-Yong Shin, Koji Ishibashi:
Regional Diversity-Multiplexing Tradeoff. IEICE Trans. Commun. 94-B(10): 2868-2871 (2011) - [j8]Koji Ishibashi, Koji Ishii, Hideki Ochiai:
Dynamic Coded Cooperation Using Multiple Turbo Codes in Wireless Relay Networks. IEEE J. Sel. Top. Signal Process. 5(1): 197-207 (2011) - [j7]Koji Ishii, Koji Ishibashi, Hideki Ochiai:
Multilevel Coded Cooperation for Multiple Sources. IEEE Trans. Wirel. Commun. 10(12): 4258-4269 (2011) - 2010
- [j6]Keisuke Sodeyama, Koji Ishibashi, Ryuji Kohno:
An Analysis of Interference Mitigation Capability of Low Duty-Cycle UWB Communications in the Presence of Wideband OFDM System. Wirel. Pers. Commun. 54(1): 39-52 (2010) - 2009
- [j5]Koji Ishibashi, Koji Ishii, Hideki Ochiai:
Bit-interleaved coded DPSK with cyclic delay diversity: design and analysis. IEEE Trans. Wirel. Commun. 8(9): 4762-4772 (2009) - 2008
- [j4]Koji Ishii, Koji Ishibashi:
Dirty Paper Coded Cooperation Utilizing Superposition Modulation. IEICE Trans. Commun. 91-B(5): 1540-1547 (2008) - [j3]Koji Ishibashi, Hideki Ochiai, Ryuji Kohno:
Embedded forward error control technique (EFECT) for low-rate but low latency communications. IEEE Trans. Wirel. Commun. 7(5-1): 1456-1460 (2008) - 2007
- [j2]Koji Ishibashi, Ivan Chee Hong Lai, Kyoya Takano, Minoru Fujishima:
A Scalable Model of Shielded Capacitors Using Mirror Image Effects. IEICE Trans. Electron. 90-C(12): 2237-2244 (2007) - 2005
- [j1]Koji Ishibashi, Hideki Ochiai, Ryuji Kohno:
Low-complexity bit-interleaved coded DAPSK for Rayleigh-fading channels. IEEE J. Sel. Areas Commun. 23(9): 1728-1738 (2005)
Conference and Workshop Papers
- 2024
- [c80]Kun Li, Hongda Xu, Xiaolong Wang, Koji Ishibashi:
Human Blockage Analysis at 5G Millimeter Wave Frequencies Using a High-Resolution Voxel Model. APWCS 2024: 1-5 - [c79]Shunsuke Kamiwatari, Masaaki Ito, Issei Kanno, Kengo Ando, Koji Ishibashi:
Interference-Aware Analog Beam Selection for Cell-Free Massive MIMO With Hybrid Beamforming Over Millimeter-Wave Channels. CCNC 2024: 696-701 - [c78]Takumi Yoshida, Takumi Takahashi, Koji Ishibashi:
Low-Complexity Cross-Domain Iterative Detection Based on Local LMMSE Filters for OTFS. ICC Workshops 2024: 402-407 - [c77]Kabuto Arai, Koji Ishibashi, Hiroki Iimori, Paulo Valente Klaine, Szabolcs Malomsoky:
Near-Field Channel Estimation for Uplink Multiuser XL-MIMO Systems. SPAWC 2024: 256-260 - [c76]Keigo Saito, Takeo Fujii, Koji Ishibashi, Yu Shibata, Soma Toki, Jumpei Doi, Toru Hatae:
Multi-Hop Communication System with Multi-Antenna Beamforming in IRDT Protocol. VTC Fall 2024: 1-5 - [c75]Kanta Terui, Kabuto Arai, Koji Ishibashi:
Robust Beamforming With Multi-Panel Array for mmWave Channels Over Mobility and Blockage. VTC Fall 2024: 1-5 - 2023
- [c74]Shuto Fukue, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi:
Network-Assisted Full-Duplex Millimeter-Wave Cell-Free Massive MIMO with Localization-Aided Inter-User Channel Estimation. ICOIN 2023: 13-18 - [c73]Kabuto Arai, Koji Ishibashi:
Self-Calibration for Channel Estimation in Hybrid Millimeter-Wave MIMO Systems. VTC Fall 2023: 1-5 - [c72]Koushi Okui, Kengo Ando, Giuseppe Abreu, Koji Ishibashi:
Scalable Network-Assisted Full-Duplex Cell-Free Massive MIMO With Limited Fronthaul Capacity. VTC Fall 2023: 1-5 - [c71]Keigo Saito, Takeo Fujii, Koji Ishibashi, Yu Shibata, Soma Toki, Hideki Endo:
Packet Aggregation Utilizing Multi-Antenna Beamforming in IRDT Protocol. VTC Fall 2023: 1-5 - [c70]Sota Uchimura, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi:
Hybrid Beamforming for Outage-Minimization in Frequency Selective Millimeter-Wave Channels. WCNC 2023: 1-6 - [c69]Kenta Miwa, Kengo Ando, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi:
Physical-Layer Authentication Over Spatially Correlated MIMO Channels. WPMC 2023: 1-6 - 2022
- [c68]Seiya Otsuka, Hiroki Iimori, Kengo Ando, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi, Naoki Ishikawa:
Analysis of Secret Key Agreement Protocol for Massive MIMO Systems. CISIS-ICEUTE 2022: 86-94 - [c67]Hiroki Iimori, Takumi Takahashi, Hyeon Seok Rou, Koji Ishibashi, Giuseppe Thadeu Freitas de Abreu, David González G., Osvaldo Gonsa:
Grant-Free Access for Extra-Large MIMO Systems Subject to Spatial Non-Stationarity. ICC 2022: 1758-1762 - [c66]Takanori Hara, Hiroki Iimori, Koji Ishibashi:
Grant-Free NOMA Using Time-Delay Domain for Low-Latency Massive Access over MIMO-OFDM. ICC 2022: 3526-3531 - [c65]Kohei Ueda, Takanori Hara, Koji Ishibashi:
Iterative Activity Detection and Carrier Frequency Offset Estimation for Grant-Free NOMA. PIMRC 2022: 1-6 - [c64]Ayaka Urabe, Koji Ishibashi, Mohammad Javad Salehi, Antti Tölli:
Beamforming Design for Wireless Coded Caching with Different Cache Sizes. SPAWC 2022: 1-5 - 2020
- [c63]Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Omid Taghizadeh, Koji Ishibashi:
Discrete-Aware Matrix Completion via Proximal Gradient. ACSSC 2020: 1327-1332 - [c62]Ryo Okabe, Hiroki Iimori, Koji Ishibashi:
Low-Complexity Robust Beamforming with Blockage Prediction for Millimeter-Wave Communications. APSIPA 2020: 1453-1459 - [c61]Ryota Yatsu, Takanori Hara, Koji Ishibashi, Sota Tsuchiya, Hideki Endo:
Packet Aggregation Based on Encryption-Then-Compression for Highly Efficient Multi-Hop Transmission. APSIPA 2020: 1466-1471 - [c60]Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi:
Full-Duplex MIMO Systems with Hardware Limitations and Imperfect Channel Estimation. GLOBECOM 2020: 1-6 - [c59]Takanori Hara, Hiroki Iimori, Koji Ishibashi:
Activity Detection for Uplink Grant-Free NOMA in the Presence of Carrier Frequency Offsets. ICC Workshops 2020: 1-6 - [c58]Masaru Oinaga, Shun Ogata, Koji Ishibashi:
Received-Power-Aware Frameless ALOHA for Grant-Free Non-Orthogonal Multiple Access. ICOIN 2020: 282-285 - [c57]Hiroki Iimori, Razvan-Andrei Stoica, Koji Ishibashi, Giuseppe Thadeu Freitas de Abreu:
Robust Sparse Reconstruction of mmWave Channel Estimates via Fractional Programming. ICOIN 2020: 318-323 - [c56]Takanori Hara, Koji Ishibashi:
Grant-Free NOMA Using Approximate Message Passing with Multi-Measurement Vector. ICOIN 2020: 426-431 - [c55]Takahide Murakami, Yoji Kishi, Koji Ishibashi, Keisuke Kasai, Hiroyuki Shinbo, Morihiko Tamai, Kensuke Tsuda, Masataka Nakazawa, Yu Tsukamoto, Hiroyuki Yokoyama, Yoshimi Fujii, Yuta Seki, Shinobu Nanba, Takanori Hara, Fumiyuki Adachi, Takayuki Sotoyama:
Research Project to Realize Various High-reliability Communications in Advanced 5G Network. WCNC 2020: 1-8 - 2019
- [c54]Takanori Hara, Koji Ishibashi:
Low Complexity Uplink Grant-Free NOMA Based on Boosted Approximate Message Passing. ACSSC 2019: 1877-1880 - [c53]Naoya Hirosawa, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi:
Age-of-Information Minimization in Two-User Multiple Access Channel with Energy Harvesting. CAMSAP 2019: 361-365 - [c52]Ryuhei Takahashi, Koji Ishibashi:
Ambient OFDM Pilot-Aided Delay-Shift Keying and Its Efficient Detection for Ultra Low-Power Communications. GlobalSIP 2019: 1-5 - [c51]Manato Takai, Koji Ishibashi:
Spatially Coupled Repeat-Accumulate Signal Codes. RWS 2019: 1-3 - [c50]Takanori Hara, Razvan-Andrei Stoica, Koji Ishibashi, Giuseppe Thadeu Freitas de Abreu:
On the Sum-Rate Capacity and Spectral Efficiency Gains of Massively Concurrent NOMA Systems. WCNC 2019: 1-7 - [c49]Hiroki Iimori, Giuseppe Abreu, Koji Ishibashi, George C. Alexandropoulos:
Transmission Strategies in Imperfect Bi-directional Full-Duplex MIMO Systems. WCNC 2019: 1-6 - [c48]Ryuhei Takahashi, Koji Ishibashi:
Design of Communication Systems for Wireless-Powered Communications with Multiple Frequency Bands. WCNC 2019: 1-6 - [c47]Hiroki Iimori, Giuseppe Abreu, Koji Ishibashi:
Fractional Programming for Robust TX BF Design in Multi-User/Single-Carrier PD-NOMA. WiOpt 2019: 1-7 - 2018
- [c46]Shun Ogata, Koji Ishibashi:
ZigZag Decodable Frameless ALOHA. ACSSC 2018: 504-507 - [c45]Akihide David Shigyo, Koji Ishibashi:
A Simple Message Passing Detector Based on QR-Decomposition for MIMO Systems. APSIPA 2018: 1406-1410 - [c44]Yuki Goto, Koji Ishibashi:
Practical green information delivery protocol for sensor-to-vehicle communications. CCNC 2018: 1-2 - [c43]Tatsuhiro Kawaguchi, Ryo Tanabe, Ryohei Takitouge, Koichiro Ishibashi, Koji Ishibashi:
Implementation of condition-aware receiver-initiated MAC protocol to realize energy-harvesting wireless sensor networks. CCNC 2018: 1-3 - [c42]Ryo Tanabe, Tatsuhiro Kawaguchi, Ryohei Takitoge, Koichiro Ishibashi, Koji Ishibashi:
Energy-aware receiver-driven medium access control protocol for wireless energy-harvesting sensor networks. CCNC 2018: 1-6 - [c41]Takanori Hara, Koji Ishibashi, Soon Xin Ng, Lajos Hanzo:
Low-Complexity Generator Polynomial Search for Turbo Trellis-Coded Spatial Modulation Using Symbol-based EXIT Charts. ISTC 2018: 1-5 - [c40]Shun Ogata, Koji Ishibashi:
Coded Frameless ALOHA. WPNC 2018: 1-5 - [c39]Kazuya Ohira, Takanori Hara, Koji Ishibashi:
Aggregate-Compression-Aided Subcarrier IQ Index Modulation. WPNC 2018: 1-6 - [c38]Masaru Oinaga, Shun Ogata, Koji Ishibashi:
ZigZag Decodable Coded Slotted ALOHA. WPNC 2018: 1-6 - 2017
- [c37]Akihide David Shigyo, Koji Ishibashi:
QR-decomposed generalized belief propagation with smart message reduction for low-complexity MIMO signal detection. APSIPA 2017: 1795-1799 - [c36]Shun Ogata, Koji Ishibashi, Giuseppe Abreu:
Multi-access diversity gain via multiple base station cooperation in frameless ALOHA. SPAWC 2017: 1-5 - [c35]Ryosuke Tanaka, Koji Ishibashi:
Robust Coded Cooperation Based on Multi-Dimensional Spatially-Coupled Repeat-Accumulate Codes. WCNC 2017: 1-6 - 2016
- [c34]Yuki Goto, Shun Ogata, Koji Ishibashi:
Energy-efficient random sleep protocol based on distributed coding for sensor-to-vehicle communications. ACSSC 2016: 724-728 - [c33]Huifa Lin, Koji Ishibashi, Won-Yong Shin, Takeo Fujii:
Decentralized power allocation for secondary random access in cognitive radio networks with successive interference cancellation. ICC 2016: 1-6 - [c32]Shogo Tanabe, Akihide David Shigyo, Koji Ishibashi:
Not-so-large MIMO signal detection based on damped QR-decomposed belief propagation. ISITA 2016: 463-467 - [c31]Akihide David Shigyo, Shogo Tanabe, Koji Ishibashi:
QR-decomposed generalized belief propagation for MIMO detection. ISITA 2016: 468-472 - 2015
- [c30]Shun Ogata, Koji Ishibashi:
Frameless ALOHA with multiple base stations. ACSSC 2015: 47-51 - [c29]Naoki Takeishi, Koji Ishibashi:
Spatially coupled repeat-accumulate coded cooperation. WCNC 2015: 516-521 - [c28]Keisuke Hirose, Koji Ishibashi, Yasushi Yamao, Yasuhiro Hirayama, Manabu Sawada:
Low-power V2M communication system with fast network association capability. WF-IoT 2015: 204-209 - 2014
- [c27]Yuki Matsuzawa, Yasushi Yamao, Kenta Otake, Koji Ishibashi:
Multi-hop transmission performance of integrated dynamic multi-hopping for wireless ad hoc networks. CCNC 2014: 635-640 - [c26]Koji Ishibashi, Giuseppe Abreu:
Analysis of RF energy harvesting in large-scale networks using absorption function. ICASSP 2014: 7004-7008 - [c25]Hiroki Kawabata, Koji Ishibashi:
RF energy powered feedback-aided cooperation. PIMRC 2014: 469-473 - [c24]Manato Takai, Koji Ishibashi, Tadahiro Wada:
Semi-blind interference alignment over correlated wireless channels. RWS 2014: 121-123 - [c23]Koji Ishibashi:
Dynamic harvest-and-forward: New cooperative diversity with RF energy harvesting. WCSP 2014: 1-5 - [c22]Huifa Lin, Koji Ishibashi, Takeo Fujii:
Serially-concatenated layered network coded cooperation for wireless sensor networks. WPMC 2014: 419-423 - 2013
- [c21]Manato Takai, Koji Ishibashi, Won-Yong Shin, Hyoseok Yi, Tadahiro Wada:
Semi-blind interference alignment based on OFDM over frequency selective X channels. ICC 2013: 5236-5241 - [c20]Naoki Takeishi, Koji Ishibashi, Yasushi Yamao:
Superimposed adaptive network coded cooperation for wireless sensor networks. PIMRC 2013: 1180-1184 - 2012
- [c19]Koji Ishibashi, Hideki Ochiai, Vahid Tarokh:
Energy harvesting cooperative communications. PIMRC 2012: 1819-1823 - 2011
- [c18]Sungsoo Kim, Won-Yong Shin, Koji Ishibashi:
The gaussian two-way relay channel with wiretapper. ACSCC 2011: 1987-1991 - [c17]Koji Ishibashi, Won-Yong Shin, Hyoseok Yi, Hideki Ochiai:
A peak power efficient cooperative diversity using star-QAM. GLOBECOM Workshops 2011: 1388-1392 - [c16]Koji Ishibashi, Hideki Ochiai:
Performance Analysis of Amplify and Forward Cooperation over Peak-Power Limited Channels. ICC 2011: 1-5 - [c15]Toshiki Kobayashi, Koji Ishibashi, Tadahiro Wada:
A study on outage probability of collaborative multi-hop transmissions with non-uniformly distributed networks. PIMRC 2011: 980-984 - 2010
- [c14]Koji Ishibashi, Koji Ishii, Hideki Ochiai:
Dynamic Turbo Coded Cooperation with Simple Power Detection. ICC 2010: 1-6 - [c13]Shinsuke Nagata, Kaiji Mukumoto, Tadahiro Wada, Koji Ishibashi:
Performance evaluation of Go-Back-i-symbol ARQ scheme applicable to meteor burst communications. ISITA 2010: 644-649 - 2009
- [c12]Takayuki Hashimoto, Tetsuya Wakiyama, Koji Ishibashi, Tadahiro Wada:
A Proposal of New Hybrid ARQ Scheme Suitable for Multi-Hop Transmissions Using LDPC Codes. GLOBECOM 2009: 1-6 - [c11]Koji Ishii, Koji Ishibashi, Hideki Ochiai:
A Novel Cooperative Diversity Based on Multilevel Coded Modulation. ICC 2009: 1-5 - [c10]Tadahiro Wada, Tetsuya Wakiyama, Takayuki Hashimoto, Koji Ishibashi:
A throughput performance analysis of hybrid ARQ scheme for wireless multihop networks using LDPC codes. ICOIN 2009: 1-5 - [c9]Takayuki Hashimoto, Tetsuya Wakiyama, Koji Ishibashi, Tadahiro Wada:
A Proposal of New Hybrid ARQ Scheme using Rate Compatible LDPC Codes for Multi-hop Transmissions. VTC Fall 2009 - [c8]Koji Ishibashi, Koji Ishii, Hideki Ochiai:
Design of Adaptive Coded Cooperation using Rate Compatible Turbo Codes. VTC Fall 2009 - 2008
- [c7]Koji Ishibashi, Koji Ishii, Hideki Ochiai:
Diversity Order Analysis of Bit-Interleaved Coded DPSK with Cyclic Delay Diversity. GLOBECOM 2008: 3820-3824 - 2007
- [c6]Koji Ishibashi, Hideki Ochiai, Ryuji Kohno:
Embedded Forward Error Control Technique (EFECT) for Low-Rate Real-Time Communications. GLOBECOM 2007: 4565-4569 - [c5]Saori Fukushi, Koji Ishibashi, Ryuji Kohno:
Tomlinson-Harashima Precoded MIMO System with Differential Detection. PIMRC 2007: 1-5 - [c4]Koji Ishibashi, Hideki Ochiai, Ryuji Kohno:
Low Complexity Bit-Interleaved Coded DAPSK with Cyclic Delay Diversity. PIMRC 2007: 1-5 - [c3]Kotaro Watanabe, Koji Ishibashi, Ryuji Kohno:
Performance of Cognitive Radio Technologies in the Presence of Primary Radio Systems. PIMRC 2007: 1-5 - 2006
- [c2]Hiroshi Tatsunami, Koji Ishibashi, Hideki Ochiai:
On the Performance of LDPC Codes with Differential Detection over Rayleigh Fading Channels. VTC Spring 2006: 2388-2392 - 2004
- [c1]Koji Ishibashi, Hideki Ochiai, Ryuji Kohno:
On the performance of bit-interleaved coded DAPSK over Rayleigh fading channels. ICC 2004: 732-736
Informal and Other Publications
- 2023
- [i4]Yuma Katsuki, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi, Naoki Ishikawa:
A New Noncoherent Gaussian Signaling Scheme for Low Probability of Detection Communications. CoRR abs/2301.02954 (2023) - 2018
- [i3]Manato Takai, Koji Ishibashi:
Repeat-Accumulate Signal Codes. CoRR abs/1802.01133 (2018) - 2017
- [i2]Vien V. Mai, Won-Yong Shin, Koji Ishibashi:
Wireless Power Transfer for Distributed Estimation in Sensor Networks. CoRR abs/1703.00714 (2017) - [i1]Shun Ogata, Koji Ishibashi, Giuseppe Abreu:
Optimized Frameless ALOHA for Cooperative Base Stations with Overlapped Coverage Areas. CoRR abs/1710.03645 (2017)
Coauthor Index
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