- K. Toyoda, T.P. Mathiopoulos, I. Sasase, and T. Ohtsuki, “A Novel Blockchain-Based Product Ownership Management System (POMS) for Anti-Counterfeits in The Post Supply Chain,” IEEE Access, 2017
- F.H. Panahi, T. Ohtsuki, W. Jiang, and Y. Takatori, “Joint Interference Alignment and Power Allocation for Multi-User MIMO Interference Channels under Perfect and Imperfect CSI,” IEEE Transactions on Green Communications and Networking, 2017
- S. Iwata, T. Ohtsuki, and P.Y. Kam, “”A Lower Bound on Secrecy Capacity for MIMO Wiretap Channel Aided by a Cooperative Jammer with Channel Estimation Error”,” IEEE Access, 2017
- R. Seno, T. Ohtsuki, W. Jiang, and Y. Takatori, “Clustering Small Cells in Heterogeneous Networks with Interference Alignment,” IEICE CoMEX
- H. Hayashi and T. Ohtsuki, “Low Computational Complexity Direction-of-Arrival Estimation of Wideband Signal Sources Based on Squared TOPS,” IEICE Transactions on Communications, Vol.E100-A, No.1, Jan. 2017
- K. Toyoda, M. Park, N. Okazaki, and T. Ohtsuki, “Novel Unsupervised SPITters Detection Scheme by Automatically Solving Unbalanced Situation,” IEEE Access, 2016
- M. Ozawa and T. Ohtsuki, “Improvements of FBS Resource Utilization and ABS Assignment Convergence for Dynamic ABS Assignment,” IET Communications, Vol. 11, Issue 3, pp. 370–37616, Feb. 2017
- P. Varela and T. Ohtsuki, “Discovering Co-Located Walking Groups of People Using iBeacon Technology,” IEEE Access, 2016
- H. Hayashi and T. Ohtsuki, “DOA estimation for Wideband Signals Based on Weighted Squared TOPS,” EURASIP Journal on Wireless Communications and Networking, 2016
- B. Mondher and T. Ohtsuki, “A Pattern-Based Approach for Sarcasm Detection on Twitter,” IEEE Access, 10.1109/ACCESS.2016.2594194, 2016
- Y. Kakizaki, Y. Shibata, T. Ohtsuki, and J. Mashino, “Suppression of multiple wideband interferences based on superposition probability,” EURASIP Journal on Wireless Communications and Networking 2016 2016:198 DOI: 10.1186/s13638-016-0699-9, Aug. 2016
- H. Hayashi and T. Ohtsuki, “DOA Estimation Using Temporal Spatial Virtual Array Based on Doppler Shift with Adaptive PRI Control,” Trans. of IEICE, EB, 2016.
- P. Varela, J. Hong, T. Ohtsuki, and X. Qin, “IGMM-Based Co-localization of Mobile Users With Ambient Radio Signals,” IEEE Internet of Things Journal, 2016.
- A. Beylerian and T. Ohtsuki, “Multi-Point Fairness in Resource Allocation for C-RAN Downlink CoMP Transmission,” EURASIP Journal on Wireless Communications and Networking, 2016.
- A.S. Arifin and T. Ohtsuki, “Ergodic Capacity Analysis of Full-duplex Mimo Relay Channel using Tracy-Widom Distribution with Processing Delay,” International Journal of Technology, Vol. 6, No. 2, 2015.
- M. Yamamoto and T. Ohtsuki, “Power-absorption-based Model for Power Compensation in WLAN Positioning Using Smartphone,” Trans. of IEICE, EB, 2015.
- W. Jaafar, T. Ohtsuki, W. Ajib, and D. Haccoun, “Impact of the CSI on the Performance of Cognitive Relay Networks with Partial Relay Selection,” IEEE Trans. on Vehicular Technology, 2015.
- X. Guan, A. Li, Z. Cai, and T. Ohtsuki, “Coalition Graph Game for Robust Routing in Cooperative Cognitive Radio Networks,” Mobile Networks and Applications, Springer Netherlands, Vol. 20, Issue 2, pp. 147–156, DOI 10.1007/s11036-015-0589-0, Apr. 2015.
- X. Guan, Y. Huang, Z. Cai, and T. Ohtsuki, “Intersection-Based Forwarding Protocol for Vehicular Ad Hoc Networks,” Telecommunication Systems, Springer Netherlands, DOI 10.1007/s11235-015-9983-y, Mar. 2015.
- F.H. Panahi and T. Ohtsuki, “Stochastic Geometry Modeling and Analysis of Cognitive Heterogeneous Cellular Networks,” EURASIP Journal on Wireless Communications and Networking, 2015.
- F.H. Panahi and T. Ohtsuki, “Analytical modeling of cognitive heterogeneous cellular networks over Nakagami-m fading,” EURASIP Journal on Wireless Communications and Networking, vol. 2015, 2015:61 doi:10.1186/s13638-015-0277-6, Mar. 2015.
- Y. Shibata, N. Yoda, T. Ohtsuki, J. Mashino, and T.Sugiyama, “Iterative estimation of undesired signal power for superposed multicarrier transmission with channel estimation error,” EURASIP Journal on Wireless Communications and Networking, vol. 2015, 2015:23 doi:10.1186/s13638-015-0268-7, Feb. 2015.
- J. Hong and T. Ohtsuki, “Signal Eigenvector-based Device-Free Passive Localization using Array Sensor,” IEEE Trans. on Vehicular Technology, 2015.
- H. Zhuang and T. Ohtsuki, “A Model Based on Poisson Point Process for Analyzing MIMO Heterogeneous Networks Utilizing Fractional Frequency Reuse,” IEEE Trans. on Wireless Communications, 2014.
- X. Guan, Y. Huang, Z. Cai, and T. Ohtsuki, “Intersection-based Forwarding Protocol for Vehicular Ad Hoc Networks,” Telecommunication Systems, 2014.
- D. Chaima and T. Ohtsuki, “Adaptive Q-Learning Cell Selection Method for Open-access Femtocell Networks: Multi- User Case,” Trans. of IEICE, EB, 2014.
- H. Zhuang and T. Ohtsuki, “A Model Based on Poison Point Process for Downlink K Tiers Fractional Frequency Reuse Heterogeneous Networks,” Elsevier Physical Communications, 2014.
- D. Chaima and T. Ohtsuki, “Cell Selection for Open-Acces Femtocell Networks: Learning in Changing Environment,” Elsevier Physical Communications, 2014.
- J.C. Corena and T. Ohtsuki, “Pollution-Free Regenerating Codes With Fast Reconstruction Verification for Verifiable Cloud Storage,” Journal of Networks, 2014.
- A.S. Arifin and T. Ohtsuki, “Capacity of Data Collection in Wireless Sensor Networks based on Mutual Information and MMSE Estimation, “International Scholarly Research Network (ISRN) Communications and Networking, 2014.
- F.H. Panahi and T. Ohtsuki, “Optimal Channel-Sensing Scheme for Cognitive Radio Systems Based on Fuzzy Q-Learning,” Trans. of IEICE, EB, 2013.
- A.S. Arifin and T. Ohtsuki, “Water-Filling Solution for Distributed Estimation of Correlated Data in WSN MIMO System,” International Scholarly Research Network (ISRN) Communications and Networking, Volume 2013.
- Y. Inatomi, J. Hong, and T. Ohtsuki, “Hidden Markov Model Based

Localization Using Array Antenna,” International Journal of Wireless

Information Networks, 10.1007/s10776-013-0211-y, June 2013 - K. Mitsuyama, T. Ikeda, and T. Ohtsuki, “Development and Performance

Evaluation of MMSE Macro-Diversity Reception System with Delay

Difference Correction,” IEEE Trans. on Vehicular Technology Vol.62, No. 9, pp. 4288–4298, Nov. 2013 - K. Mitsuyama, T. Ikeda, and T. Ohtsuki, “MIMO Receiver with Antenna

Subset Selection: Algorithm and Hardware Implementation,” Trans. of

IEICE, E96-B, no. 4, pp. 1039–1050, Apr. 2013. - S. Tomii and T. Ohtsuki, “Learning Based Falling Detection Using

Multiple Doppler Sensors,” Advances in Internet of Things (Accepted) - T. Kudo and T. Ohtsuki, “Cell Range Expansion Using Distributed

Q-Learning in Heterogeneous Networks,” EURASIP Journal on Wireless

Communications and Networking (Accepted) - M. Jilani and T. Ohtsuki, “Joint SVD-GSVD precoding technique and secrecy capacity lower bound for the MIMO relay wire-tap channel,” EURASIP Journal on Wireless Communications and Networking. (accepted for publication)
- O. Souihli and T. Ohtsuki, “Benefits of Rich Scattering in MIMO

Channels: A Graph-Theoretical Perspective,” IEEE Communications Letters - J. Hong and T. Ohtsuki, “State Classification with Array Sensor using Support Vector Machine for Wireless Monitoring Systems,” Trans. of IEICE, EB (accepted for publication)
- J.C. Corena and T. Ohtsuki, “Secure and Fast Aggregation of Financial Data in Cloud-Based Expense Tracking Applications,” Journal of Networks and Systems Management. (accepted for publication)
- X. Guan, M. Chen, and T. Ohtsuki, “Epidemic Theory Based H + 1 Hop Forwarding for Intermittently Connected Mobile Ad Hoc Networks,” EURASIP Journal on Wireless Communications and Networking. (accepted for publication)
- J. Hong, S. Kawakami, C.N. Nyirenda, and T. Ohtsuki, “Array Antenna based Localization Using Spatial Smoothing Processing,” Journal of Communications, (accepted)
- O. Souihli and T. Ohtsuki, “Transparent Inband Feedback for Training-Based MIMO Systems,” Wireless Personal Communications, Vol. 63, Issue 3 (2012), pp. 587–599, 2012.
- N.B. Harum, T. Ohtsuki, and M. Nakagawa, “PAPR Reduction of TDD-CDMA Using Joint Transmission Technique,” Trans. of IEICE, Vol.E95-B, No.3, pp. 933–942, Mar. 2012.
- Y. Hemmi, K. Adachi, and T. Ohtsuki, “Subcarrier Mapping for Single-User SC-FDMA Relay Communications,” Trans. of IEICE, Vol.E94-A,No.12,pp.-,Dec. 2011.(accepted for publication)
- O. Souihli and T. Ohtsuki, “Typical Set Cognitive Sensing,” International Scholarly Research Network (ISRN) Communications and Networking, Volume 2011 (2011), Article ID 709091, 10 pages
- H. Chen, Q. Wan, H. Chen, and T. Ohtsuki, “Robust DOA Estimation for Uncorrelated and Coherent Signals,” Trans. of IEICE, EB (accepted for publication)
- O. Rodoriguez and T. Ohtsuki, “Improving Accuracy for Range-Based

Localization in Multiple Target Wireless Sensor Networks,” International

Scholarly Research Network (ISRN) Communications and Networking.

(accepted for publication) - K. Matsumura and T. Ohtsuki, “Orthogonal Beamforming Using Gram-Schmidt

Orthogonalization for Multi-User MIMO Downlink System,” EURASIP Journal

on Wireless Communications and Networking. (accepted for publication) - S. Kawakami and T. Ohtsuki, “Localization Using Iterative Angle of

Arrival Method Sharing Snapshots of Coherent Subarrays,” EURASIP Journal

on Advances in Signal Processing. (accepted for publication) - N. Lynn, O. Takyu, K. Adachi, M. Nakagawa, and T. Ohtsuki, “An autonomous cooperative ARQ Protocol for Hybrid Mobile Wireless Sensor Networks,” Special issue on “Recent Advance on Distributed Sensor Systems & Applications” in the Journal of Communications (JCM, ISSN 1796-2021).(accepted for publication)
- C. Sertthin, T. Ohtsuki, and M. Nakagawa, “6Axes Sensor Assisted Low Complexity High Accuracy Visible Light Communication Based Indoor Positioning System,” E93-B, no. 11, pp. 2879–2891, Dec. 2010.
- K. Mitsuyama, T. Ikeda, and T. Ohtsuki, “Performance Evaluation of Iterative LDPC-Coded MIMO OFDM System with Time Interleaving,” Trans. of IEICE, EA, 2010.
- C. Sertthin, T. Fujii, T. Ohtsuki, and M. Nakagawa, “Multi-band Received Signal Strength Fingerprinting Based Indoor Location System,” Trans. of IEICE, E93-B, no.8, pp. 1993–2003, Aug. 2010.
- Y. Kumano and T. Ohtsuki, “Half-Duplex Relaying with Serially-Concatenated Low-Density Generator Matrix (SCLDGM) Codes,” Elsevier Physical Communications, vol. 3, issue 2, pp. 129–135, June 2010.
- X. Guan, L. Guan, X.G. Wang, and T. Ohtsuki, “A New Load Balancing And Data Collection Algorithm For Energy Saving In Wireless Sensor Networks,” Telecommunication Systems, Springer Netherlands, Feb. 2010.
- O. Souihli and T. Ohtsuki, “Joint Feedback and Scheduling Scheme For Training-Based Multiuser MIMO Systems With Service Differentiation,” IEEE Trans. on Wireless Communications, vol. 9, no. 2, pp. 528–533, Feb. 2010.
- Z. Min and T. Ohtsuki, “An Improved User Selection Algorithm in Multiuser MIMO Broadcast with Channel Prediction,” Trans. of IEICE, E92-B, no.8, pp. 2667–2674, Aug. 2009.
- S. Ikeda, H. Tsuji, and T. Ohtsuki, “Indoor Event Detection with Signal Subspace Spanned by Eigenvector for Home or Office Security,” Trans. of IEICE, E92-B, no.7, pp. 2406–2412, July 2009.
- Y. Tsuchiya and T. Ohtsuki, “Random Beamforming Using Iterative Power Allocation with Small Feedback Information and Low Latency,” Trans. of IEICE, E92-B, no.5, pp.1908–1911, May 2009.
- J.H. Lee, T. Ohtsuki, and M. Nakagawa, “Turbo Equalized Double Window Cancellation and Combining Robust to Large Delay Spread Channel,” Trans. of IEICE, E92-B, no. 2, pp. 517–526, Feb. 2009.
- S. Gounai and T. Ohtsuki, “Convergence Acceleration of Iterative Signal Detection for MIMO System with Belief Propagation,” Trans. of IEICE, E91-B, no. 8, pp. 2640–2648, Aug. 2008.
- S. Gounai, T. Ohtsuki, and T. Kaneko, “Mapping for Iterative MMSE-SIC with Belief Propagation,” Trans. of IEICE, E91-B, no. 7, pp. 2187–2197, July 2008.
- I. Yamada, T. Ohtsuki, T. Hisanaga, and Li Zheng “An indoor position estimation method by maximum likelihood algorithm using received signal strength,” SICE Journal of Control, Measurement, and System Integration, vol. 1, no. 3, pp. 251–256, Mar. 2008.
- K. Kobayashi, T. Ohtsuki, and T. Kaneko, “MIMO Systems in the Presence of Feedback Delay,” Trans. of IEICE, E91-B, no. 3, pp. 829–836, Mar. 2008.
- K. Kobayashi, T. Someya, T. Ohtsuki, S. PW. Sigit, and T. Kashima, “MIMO System with Relative Phase Difference Time-Shift Modulation for Rician Fading Environment,” Trans. of IEICE, E91-B, no. 2, pp. 459–465, Feb. 2008.
- Y. Tsuchiya, T. Ohtsuki, and T. Kaneko, “Scheduling Algorithm with Power Allocation for Random Unitary Beamforming,” Trans. of IEICE, E91-B, no. 1, pp. 232–238, Jan. 2008.
- J.H. Lee, Y. Kishiyama, T. Ohtsuki, and M. Nakagawa, “Double window cancellation and combining for OFDM in time-invariant large delay spread channel,” Trans. of IEICE, E90-A, no. 10, pp. 2066–2078, Oct. 2007.
- F. Tsuzuki and T. Ohtsuki, “Performance Evaluation of SAGE Algorithm for Channel Estimation and Data Detection Using Superimposed Training in MIMO System,” Trans. of IEICE, E90-B, no. 6, pp. 1460–1466, June 2007.
- (Invited Survey Paper) T. Ohtsuki, “LDPC codes in communications and broadcasting,” Trans. of IEICE, E90-B, no. 3, pp. 440–453, Mar. 2007.
- S. Gounai, T. Ohtsuki, and T. Kaneko, “Lowering Error Floors of Irregular LDPC Code on Fast Fading Environment with Perfect and Imperfect CSIs,” Trans. of IEICE, E90-B, no. 3, pp. 569–577, Mar. 2007.
- S. Ichiki and T. Ohtsuki, “Chip-level Detection in Optical Frequency Hopping Code Division Multiple Access,” Trans. of IEICE, E89-A, no. 7, pp. 2056–2062, July 2006.
- O. Takyu, T. Ohtsuki, and M. Nakagawa, “Companding System Based on Time Clustering for Reducing Peak Power of OFDM Symbol in Wireless Communications,” IEICE Trans. of IEICE, E89-A, no. 7, pp. 1884–1891, July 2006.
- D. Takase and T. Ohtsuki, “Spatial Multiplexing in Optical Wireless MIMO Communications Over Indoor Environment,” Trans. of IEICE, E89-B, no. 4, pp. 1364–1371, Apr. 2006.
- O. Takyu, T. Ohtsuki, and M. Nakagawa, “A Sign Selection Method of Orthogonal Variable Spreading Factor Code for Peak Power Reduction in Multi-Rate OFCDM Systems,” Trans. of IEICE, E89-B, no. 4, pp. 1333–1345, Apr. 2006.
- Y. Inaba and T. Ohtsuki, “Bootstrapped Modified Weighted Bit Flipping Decoding of Low Density Parity Check Codes,” Trans. of IEICE, E89-A, no. 4, pp. 1145–1149, Apr. 2006.
- Y. Inaba, T. Saito, and T. Ohtsuki, “Reliability-Based Hybrid ARQ (RB-HARQ) Schemes using Low-Density Parity-Check (LDPC) Codes,” Trans. of IEICE, E89-B, no. 4, pp. 1170–1177, Apr. 2006.
- T. Ohtsuki, “Performance Analysis of Statistical STBC Cooperative Diversity Using Binary Sensors with Observation Noise,” Trans. of IEICE, E89-B, no. 3, pp. 970–973, Mar. 2006.
- K. Honjo and T. Ohtsuki, “Computational Complexity Reduction of MLD Based on SINR in MIMO Spatial Multiplexing Systems,” Trans. of IEICE, E89-B, no. 3, pp. 914–921, Mar. 2006.
- H. Sato and T. Ohtsuki, “Frequency Domain Channel Estimation and Equalization for Direct Sequence-Ultra Wideband (DS-UWB) System,” IEE Proc. Commun., vol. 153, No. 1, pp. 93–98, Feb. 2006.
- F. Tsuzuki and T. Ohtsuki, “Channel Estimation with Selective Superimposed Pilot Sequences under Fast Fading Environments,” Trans. of IEICE, E89-B, no. 2, pp. 556–563, Feb. 2006.
- S. Gounai and T. Ohtsuki, “Lowering Error Floor of Irregular LDPC Codes by CRC and OSD Algorithm,” Trans. of IEICE, E89-B, no. 1, pp. 1–10, Jan. 2006.
- S. Teramoto and T. Ohtsuki, “Multiple-subcarrier optical communication systems with subcarrier signal point sequence,” IEEE Trans. on Communications, no.10, pp. 1738–1743, Oct. 2005.
- K. Suto, Y. Hara, T. Ohtsuki, and Y. Takei, “Throughput Maximization Transmission Control Scheme for MIMO Systems,” Trans. of IEICE, E88-B, no. 10, pp. 4040–4046, Oct. 2005.
- T. Ezaki and T. Ohtsuki, “Rake Performance for UWB-IR system with SISO and MISO,” Trans. of IEICE, E88-B, no. 10, pp. 4112–4116, Oct. 2005.
- H. Sato and T. Ohtsuki, “Computational Complexity and Performance of RAKE Receivers with Channel Estimation for DS-UWB,” Trans. of IEICE, E88-A, no. 9, pp. 2318–2326, Sep. 2005.
- S. Gounai and T. Ohtsuki, “Decoding Algorithms Based on Oscillation for Low-Density Parity Check Codes,” Trans. of IEICE, E88-A, no. 8, pp. 2216–2226, Aug. 2005.
- O. Takyu, T. Ohtsuki, and M. Nakagawa, “Criterion for Improving Error Rate Degradation by Nonlinear Amplifier for Multicarrier Transmission,” Trans. of IEICE, E88-B, no. 7, pp. 3057–3069, July 2005.
- S. Imada and T. Ohtsuki, “Pre-Rake Diversity Combining for UWB Systems in IEEE 802.15 UWB Multipath Channel,” Trans. of IEICE, E88-B, no. 5, pp. 2193–2199, May 2005.
- K. Wakafuji and T. Ohtsuki, “Performance Analysis of Atmospheric Optical Subcarrier Multiplexing Systems and Atmospheric Optical Subcarrier Modulated Code Division Multiplexing Systems,” IEEE Journal of Lightwave Technology, Vol. 23, no. 10, pp. 1676–1682, Apr. 2005.
- N. Kitamoto and T. Ohtsuki, “Parallel Combinatory Multiple-Subcarrier Optical Wireless Communication Systems,” Wiley International Journal of Communication Systems, Vol. 18, Issue 3, pp. 195–203, Mar. 2005.
- S. Teramoto and T. Ohtsuki, “Optical Wireless Sensor Network System Using Corner Cube Retroreflectors (CCRs),” EURASIP Journal on Wireless Communications and Networking, vol. 2005, no. 1, pp. 39–44, Mar. 2005.
- S. Teramoto and T. Ohtsuki, “Multiple-Subcarrier Optical Communication System with Peak Reduction Carriers,” Trans. of IEICE, E87-B, no. 11, pp. 3385–3388, Nov. 2004.
- A. Ogawa, T. Yamazato, and T. Ohtsuki, “Information and Signal Processing for Sensor Networks,” Trans. of IEICE, E87-A, no. 10, pp. 2599–2606, Oct. 2004.（Invited Paper）
- N. Ohkubo and T. Ohtsuki, “OFDM Packet Transmission System with Added Pilot Semi-Blind Iterative Channel Estimation for Tracking Fast Time-Varying Channel,” Trans. of IEICE, E87-B, no. 9, pp. 2729–2737, Sep. 2004.
- T. Ezaki and T. Ohtsuki, “Diversity Gain in Ultra Wideband Impulse Radio (UWB-IR),” Trans. of IEICE, E87-B, no. 8, pp. 2385–2390, Aug. 2004.
- K. Suto and T. Ohtsuki, “Space-Time-Frequency Block Codes over Frequency Selective Fading Channels,” Trans. of IEICE, E87-B, no. 7, pp. 1939–1945, July 2004.
- H. Kanemaru and T. Ohtsuki, “Space-Time/Space-Frequency Block Coded OFDM with Diagonalized Maximum Likelihood Decoder (ST/SF-OFDM with DMLD),” Trans. of IEICE, E87-B, no. 7, pp. 2034–2039, July 2004.
- 笹崎幸弘, 大槻知明, “高速フェージング環境における積距離分布及びトレース分布に基づく空間時間トレリス符号の設計基準,” 電子情報通信学会論文誌(B), no. 6, pp. 773–783, June 2004.
- O. Takyu, T. Ohtsuki, and M. Nakagawa, “Frequency Offset Compensation with MMSE-MUD for Multi-Carrier CDMA in Quasi-Synchronous Uplink,” Trans. of IEICE, E87-B, no. 6, pp. 1495–1504, June 2004.
- H. Futaki and T. Ohtsuki, “Decoding Algorithms for Low-Density Parity-Check Codes with Multilevel Modulations,” Trans. of IEICE, E87-B, no. 5, pp. 1282–1289, May 2004.
- H. Futaki and T. Ohtsuki, “Low-Density Parity-Check (LDPC) Coded OFDM Systems: Bit Error Rate and The Number of Decoding Iterations,” Trans. of IEICE, E86-B, no. 11, pp. 3310–3336, Nov. 2003.
- K. Wakafuji and T. Ohtsuki, “Direct-Detection Optical CDMA Receiver With Interference Estimation and Double Optical Hardlimiters,” IEEE Journal of Lightwave Technology, Vol. 21, No. 10, pp. 2182–2188, Oct. 2003.
- H. Futaki and T. Ohtsuki, “Space-Time Transmit Diversity Schemes with Low-Density Parity-Check (LDPC) Codes,” Trans. of IEICE, E86-B, no. 10, pp. 3131–3136, Oct. 2003.
- K. Wakafuji and T. Ohtsuki, “Multibits/Sequence-Period Optical CDMA Receiver with Double Optical Hardlimiters,” Trans. of IEICE, E86-A, no. 10, pp. 2670–2677, Oct. 2003.
- N. Okubo and T. Ohtsuki, “Design Criteria for Phase Sequences in Selected Mapping,” Trans. of IEICE, E86-B, no. 9, pp. 2628–2636, Sep. 2003.
- H. Yamaguchi, T. Ohtsuki, and I. Sasase, “Multiple Subcarrier Modulation for Infrared Wireless Systems Using Punctured Convolutional Codes and Variable Amplitude Block Codes,” Trans. of IEICE, E86-B, no. 8, pp. 2433–2439, Aug. 2003.
- T. Ohtsuki, “Multiple-Subcarrier Modulation in Optical Wireless Communications,” IEEE Communications Magazine, vol. 41, no. 3, pp. 74–79, Mar. 2003.
- Y. Sasazaki and T. Ohtsuki, “Improved Design Criteria and New Trellis Codes for Space-Time Trellis Coded Modulation in Fast Fading Channels,” Trans. of IEICE, E86-B, no. 3, pp. 1057–1062, Mar. 2003.
- T. Ohtsuki, “Performance Analysis of Atmospheric Optical PPM CDMA Systems,” IEEE Journal of Lightwave Technology, Vol. 21, No. 2, pp. 406–411, Feb. 2003.
- 堀内隆明, 楊偉祖, 大槻知明, 笹瀬巌, “プレディストーション及び部分系列伝送を用いたOFDM非線形歪み補償法の特性評価,” 電子情報通信学会論文誌(B), no. 11, pp. 1865–1873, Nov. 2002.
- H. Yamaguchi, R. Matsuo, T. Ohtsuki, and I. Sasase, “Equalization for Infrared Wireless Systems Using OOK-CDMA,” Trans. of IEICE, E85-B, no. 10, pp. 2292–2299, Oct. 2002.
- 松尾綾子, 大槻知明, 笹瀬巌, “EMアルゴリズムを用いた空間時間符号化でのチャネル推定及び送信信号検出の簡略化,” 電子情報通信学会論文誌(B), no. 1, pp. 20–30, Jan. 2002.
- H. Yamaguchi, R. Matsuo, M. Matsuo, T. Ohtsuki, and I. Sasase, “Indoor Infrared Wireless Systems using OOK-CDMA with Decision-Feedback Equalizer on Diffuse Channels,” Trans. of IEICE, E84-B, no. 4, pp. 960–966, Apr. 2001.
- 新宮秀樹, 鎌倉功弘, 大槻知明, 笹瀬巌, “光クリッパを設けた干渉除去器を適用した光符号分割多元接続方式,” 電子情報通信学会論文誌(B), no. 1, pp. 50–60, Jan. 2001.
- T. Ohtsuki and J. M. Kahn, “BER Performance of Turbo-Coded PPM CDMA Systems on Optical Fiber,” IEEE Journal of Lightwave Technology, Vol. 18, No. 12 , pp. 1776–1784, Dec. 2000.
- 佐藤章博, 大槻知明, 笹瀬巌, “サイトダイバーシチを用いた無指向性直射室内赤外線無線通信システムの光路しゃへいに関する一検討,” 電子情報通信学会論文誌(B), no. 12, pp. 1692–1702, Dec. 2000.
- H. Sawagashira, K. Kamakura, T. Ohtsuki, and I. Sasase, “Direct-Detection Optical Synchronous CDMA Systems with Interference Canceller Using Group Information Codes,” Trans. of IEICE, E83-A, no. 11, pp. 2138–2142, Nov. 2000.
- 園田敏雄, 新宮秀樹, 鎌倉功弘, 大槻知明, 笹瀬巌, “時間領域符号化を適用した光周波数領域符号化符号分割多元接続方式の特性解析,” 電子情報通信学会論文誌(B)，no. 8, pp. 1114–1124, Aug. 2000.
- 大槻知明, “PPM CDMAを用いた室内赤外線無線通信方式の特性解析,” 電子情報通信学会論文誌(B)，vol. J83-B, no. 7, pp. 937–947, July 2000.
- 松尾綾子, 松尾道人, 大槻知明, 笹瀬巌, 宇多川智之, “拡散反射通信路におけるOOK CDMA室内赤外線無線通信方式の特性解析,” 電子情報通信学会論文誌(B)，no. 7, pp. 970–979, July 2000.
- T. Ohtsuki, “Rate-Adaptive Indoor Infrared Wireless Communication Systems Using Repeated and Punctured Convolutional Codes,” IEEE Communications Letters, Vol. 4 , No. 2, pp. 56–58, Feb. 2000.
- 松尾道人, 大槻知明, 笹瀬巌, 宇多川智之, “パンクチャド畳込み符号と適応PPM変調を用いた適応ビットレート室内赤外線無線通信方式,” 電子情報通信学会論文誌(B)，vol. J83-B, no. 1, pp. 14–21, Jan. 2000.
- 新宮秀樹, 蒲地嘉展, 大槻知明, 笹瀬巌, “マルチパルス位置変調を用いた光符号分割多重方式,” 電子情報通信学会論文誌(B)，vol. J82-B, no. 9, pp. 1689–1701, Sep. 1999.
- K. Kamakura, T. Ohtsuki, and I. Sasase, “Optical Spread Time CDMA Communication Systems with PPM Signaling,” Trans. of IEICE, E82-B, No. 7, pp. 1038–1047, July 1999.
- W. Yang, T. Ohtsuki, M. Ueda, K. Matsumoto, and I. Sasase, “Performance Analysis of ADSL with Punctured Convolutional Code,” Trans. of IEICE, E82-B, No. 7, pp. 1030–1037, July 1999.
- T. Ohtsuki, “Performance Analysis of Direct-Detection Optical CDMA Systems with Optical Hard-Limiter using Equal-Weight Orthogonal Signaling,” Trans. of IEICE, E82-B, No. 3, pp. 512–520, March 1999.
- 蒲地嘉展, 大槻知明, 上原秀幸, 笹瀬巌, “干渉キャンセラを適用した光同期M-ary FSK/CDMA方式,” 電子情報通信学会論文誌(B)，vol. J82-B, no. 1, pp. 43–55, Jan. 1999.
- 佐藤章博, 大槻知明, 上原秀幸, 笹瀬巌, “拡散反射通信路を利用した室内赤外線無線通信における送信パルス波形の検討,” 電子情報通信学会論文誌(B-I)，vol. J81-B-I, no. 12, pp. 861–871, Dec. 1998.
- K. Kamakura, Y. Gamachi, H. Uehara, T. Ohtsuki, and I. Sasase, “Performance Analysis of Optical Frequency Domain Encoding CDMA Enhancement of Frequency Division Multiplexing,” Trans. of IEICE, E81-B, No.9, pp. 1749–1757, Sep. 1998.
- T. Ohtsuki, “Direct-Detection Optical Asynchronous CDMA Systems with Double Optical Hard-Limiters: APD Noise and Thermal Noise,” Trans. of IEICE, E81-B, No. 7, pp. 1491–1499, July 1998.
- T. Ohtsuki, “Channel Interference Cancellation Using Electrooptic Switch and Optical Hard-Limiters for Direct-Detection Optical CDMA Systems,” IEEE Journal of Lightwave Technology, vol. 16, no. 4, pp. 520–526, April 1998.
- T. Ohtsuki, M. Takeoka, and E. Iwahashi, “Performance Analysis of Direct-Detection Optical Synchronous CDMA Systems with Co-Channel Interference Canceller,” Trans. of IEICE, E80-A, No. 11, pp. 2260–2263, Nov. 1997.
- T. Ohtsuki, “Performance Analysis of Direct-Detection Optical Asynchronous CDMA Systems with Double Optical Hard-Limiters,” IEEE Journal of Lightwave Technology, vol. 15, no. 3, pp. 452–457, March 1997.
- T. Ohtsuki, K. Sato, I. Sasase, and S. Mori, “Direct-Detection Optical Synchronous CDMA Systems with Double Optical Hard-Limiters Using Modified Prime Sequence Codes,” IEEE Journal on Selected Areas on Communications, vol. 14, no. 9, pp. 1879–1887, Dec. 1996.
- T. Ohtsuki, “Direct-Detection Optical Synchronous CDMA Systems with Channel Interference Canceller using Time Division Reference Signal,” Trans. of IEICE, E79-A, No. 12, pp. 1948–1956, Dec. 1996.
- T. Ohtsuki, I. Sasase, and S. Mori, “Access Timing Controlled Direct-Detection Optical CDMA Systems with PPM Signaling,” Trans. of IEICE, E79-A, No. 9, pp. 1392–1400, Sep. 1996.
- T. Ohtsuki, I. Sasase, and S. Mori, “Cutoff Rate Analysis of Overlapping Multi-pulse Pulse Position Modulation (OMPPM) in Optical Direct-Detection Channel,” Trans. of IEICE, E79-A, No. 9, pp. 1471–1474, Sep. 1996.
- K. Sato, T. Ohtsuki, H. Uehara, and I. Sasase, “Effect of Imperfect Slot Synchronization on Direct-Detection Optical Synchronous CDMA Communication Systems with PPM Signaling,” IEEE Journal of Lightwave Technology, vol. 14, no . 9, pp. 1963–1969, Sep. 1996.
- Y. Gamachi, T. Ohtsuki, H. Uehara, and I. Sasase, “Performance Analysis of Optical Synchronous PPM/CDMA Systems with Interference Canceller Under Number-State Light Field,” Trans. of IEICE, E79-B, No.7, pp. 915–922, July 1996.
- N. Aoki, T. Ohtsuki, and I. Sasase, “Performance Analysis of Multi-Pulse Pulse Position Modulation Using Avalanche Photodiode in Optical Intersatellite Links,” Trans. of IEICE, E79-B, No. 11, pp. 52–56, Jan. 1996.
- T. Ohtsuki, I. Sasase, and S. Mori, “Effects of Hard-Limiter and Error Correction Coding on Performance of Direct-Detection Optical CDMA Systems with PPM Signaling,” Trans. of IEICE, Vol. E78-A, No. 9, pp. 1092–1101, Sep. 1995.
- K. Sato, T. Ohtsuki and I. Sasase, “Coding for Multi-pulse PPM with Imperfect Slot Synchronization in Optical Direct-Detection Channels,” Trans. of IEICE, Vol. E78-B, No. 6, pp. 916–922, June 1995.
- H. Uehara, T. Ohtsuki, and I. Sasase, “Performance Analysis of Coherent Optical POLSK Receivers with Local Oscillator Intensity Noise and Unmatched Quantum Efficiencies,” Trans. of IEICE, Vol. E77-B, No. 12, pp. 1590–1599, Dec. 1994.
- T. Ohtsuki, I. Sasase, and S. Mori, “Lower Bounds on Capacity and Cutoff Rate of Differential Overlapping Pulse Position Modulation in Optical Direct-Detection Channel,” Trans. of IEICE, E77-B, No. 10, pp. 1230–1237, Oct. 1994.
- T. Ohtsuki, I. Sasase, and S. Mori, “Error Performance of Overlapping Multi-Pulse Pulse Position Modulation (OMPPM) and Trellis Coded OMPPM in Optical Direct-Detection Channel,” Trans. of IEICE, Vol. E77-B, No. 9, pp. 1133–1143, Sep. 1994.
- T. Ohtsuki, I. Sasase, and S. Mori, “Capacity and Cutoff Rate of Overlapping Multi-pulse Pulse Position Modulation (OMPPM) in Optical Direct-Detection Channel: Quantum Limited Case,” Trans. of IEICE, Vol. E77-A, No. 8, pp. 1298–1308, Aug. 1994.
- T. Ohtsuki, I. Sasase, and S. Mori, “Performance Analysis of Multi-pulse Pulse Position Modulation (MPPM) in Noisy Photon Counting Channel,” Trans. of IEICE, Vol. E77-A, No. 8, pp. 1381–1386, Aug. 1994.
- K. Sato, T. Ohtsuki, and I. Sasase, “Performance Analysis of Multi-Pulse PPM With Imperfect Slot Synchronization in Optical Direct-Detection Channel,” Trans. of IEICE, Vol. E77-B, No. 8, pp. 1032–1039, Aug. 1994.
- I. Seto, T. Ohtsuki, I. Sasase, and S. Mori, “Polarization Shift Keying (POLSK) Phase Diversity Homodyne System with Multiplying Detection in Coherent Optical Communications,” Journal of Fibre and Integrated Optics, Vol. 12, No. 4, pp. 381–395, Sep. 1993.
- T. Ohtsuki, I. Sasase, and S. Mori, “The Effects of Laser Phase Noise on Optical Coherent Coded Subcarrier Multiplexing System with Distributing Local Oscillator in Local Loop,” Trans. of IEICE, Vol. E76-C, No. 2, pp. 293–300 , June 1993.
- T. Ohtsuki, H. Yashima, I. Sasase, and S. Mori, “Coherent Subcarrier Multiplexed System with Distributing Local Oscillator in Local Loop,” Trans. of IEICE, Vol. E75-B, No. 6, pp. 499–505, June 1992.
- I. Seto, T. Ohtsuki, H. Yashima, I. Sasase, and S. Mori, “Coherent Optical Polarization-Shift-Keying (POLSK) Homodyne System Using Phase-Diversity Receivers,” Trans. of IEICE, Vol. E75-A,C, No. 1, pp. 52–59, pp. 50– 57, Jan. 1992.
- T. Ohtsuki, H. Yashima, I. Sasase, and S. Mori, “Parallel Rate-Variable Punctured Convolutional Coded PPM in Photon Communication,” Trans. of IEICE, Vol. E75-A,C, No. 1, pp. 46–51, pp. 44–49, Jan. 1992
- T. Ohtsuki, H. Yashima, I. Sasase, and S. Mori, “Cutoff Rate and Capacity of MPPM in Noiseless Photon Counting Channel,” Trans. of IEICE, Vol. E74, No. 12, pp. 4080–4084, Dec. 1991.