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Chang-Jun Ahn
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2020 – today
- 2024
- [c59]Koji Nishibe, Takanori Shibakura, Koki Miyamoto, Jaesang Cha, Chang-Jun Ahn:
Efficient Joint Estimation Methods of Channel and IQ Imbalance for MIMO-OFDM Systems. ICEIC 2024: 1-4 - [c58]Jun-Han Wang, He He, Kosuke Tamura, Shun Kojima, Jaesang Cha, Chang-Jun Ahn:
Vehicle-to-Vehicle Communication Channel Estimator Based on Gate Recurrent Unit. ICEIC 2024: 1-4 - 2023
- [j56]Hiroaki Kobayashi, Shun Kojima
, Kazuki Maruta
, Takatoshi Sugiyama, Chang-Jun Ahn:
CNN-based blind SIR classification framework for STPA-BAA spectrum superposing. ICT Express 9(1): 57-62 (2023) - [j55]He He, Shun Kojima, Kazuki Maruta, Chang-Jun Ahn:
Adaptive Zero-Padding with Impulsive Training Signal MMSE-SMI Adaptive Array Interference Suppression. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 106(4): 674-682 (2023) - [j54]Shun Kojima
, Yuta Goto, Kazuki Maruta
, Shinya Sugiura
, Chang-Jun Ahn:
Timing Synchronization Based on Supervised Learning of Spectrogram for OFDM Systems. IEEE Trans. Cogn. Commun. Netw. 9(5): 1141-1154 (2023) - 2022
- [c57]Sudhanshu Arya
, Yeon Ho Chung, Chang-Jun Ahn:
Game Theoretic Framework for Beamforming Optimization for Photon-Counting Multiuser MISO Channel with Asymptotic Low Power. ICC Workshops 2022: 451-456 - [c56]Shun Kojima, Yi Feng, Kazuki Maruta, Kanemitsu Ootsu, Takashi Yokota, Chang-Jun Ahn, Vahid Tarokh:
Towards Deep Learning-Guided Multiuser SNR and Doppler Shift Detection for Next-Generation Wireless Systems. VTC Spring 2022: 1-6 - 2021
- [j53]Kosuke Shima
, Shun Kojima
, Koki Ito
, Kazuki Maruta
, Chang-Jun Ahn:
Adaptive Subcarrier Grouping for MMSE-SMI Adaptive Array Interference Suppression. IEEE Access 9: 18361-18372 (2021) - [j52]Shun Kojima
, He He, Takaki Omura, Kazuki Maruta
, Chang-Jun Ahn:
Generalized Regression Neural Network Based Fast Fading Channel Tracking Using Frequency-Domain CSI Smoothing. IEEE Access 9: 142425-142436 (2021) - [j51]Nobutaka Funaki
, Kazuki Maruta
, Chang-Jun Ahn:
Dimensionality reduction of interference subspace for multiuser massive MIMO null-space expansion. Digit. Signal Process. 114: 103063 (2021) - [j50]Kosuke Shima, Kazuki Maruta, Chang-Jun Ahn:
Data-Aided SMI Algorithm Using Common Correlation Matrix for Adaptive Array Interference Suppression. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 104-A(2): 404-411 (2021) - [j49]Kakeru Matsubara, Shun Kuroki, Koki Ito, Kazushi Shimada, Kazuki Maruta
, Chang-Jun Ahn:
Pilot De-Contamination by Modified HTRCI with Time-Domain CSI Separation for Two-Cell MIMO Downlink. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 104-A(9): 1345-1348 (2021) - [j48]Kazuki Maruta, Chang-Jun Ahn:
Multi Modulus Signal Adaptation for Semi-Blind Uplink Interference Suppression on Multicell Massive MIMO Systems. IEICE Trans. Commun. 104-B(2): 158-168 (2021) - [j47]Shun Kojima
, Kazuki Maruta
, Yi Feng
, Chang-Jun Ahn, Vahid Tarokh
:
CNN-Based Joint SNR and Doppler Shift Classification Using Spectrogram Images for Adaptive Modulation and Coding. IEEE Trans. Commun. 69(8): 5152-5167 (2021) - [c55]Taiga Mano, Chang-Jun Ahn:
Joint Polar Code and Trellis Coded Modulation with Known Bits Puncturing. ISPACS 2021: 1-2 - [c54]Yuta Toyama, Shun Kojima, Chang-Jun Ahn:
Performance Enhancement of Low Granularity MIMO-OFDMA Using FSS Method. ISPACS 2021: 1-2 - [c53]Koki Yanashita, Kazushi Shimada, Seiya Hirano, Chang-Jun Ahn:
Optimum Assignment of Variable Code Length and Modulation Index for VLC-OFDM. ISPACS 2021: 1-2 - [c52]He He, Shun Kojima, Kentaro Yonei, Kazuki Maruta
, Chang-Jun Ahn:
Variable Frame Splitting for Polar Coded MIMO E-SDM in Fast Fading Channel. VTC Fall 2021: 1-5 - [c51]Shun Kojima, Yi Feng, Kazuki Maruta
, Kanemitsu Ootsu, Takashi Yokota, Chang-Jun Ahn, Vahid Tarokh:
Investigation of Input Signal Representation to CNN for Improving SNR Classification Accuracy. VTC Fall 2021: 1-5 - 2020
- [j46]Kabuto Arai
, Kazuki Maruta
, Chang-Jun Ahn:
Uplink Null-Space Expansion for Multiuser Massive MIMO in Time-Varying Channels Under Unknown Interference. IEEE Access 8: 224292-224305 (2020) - [j45]Kentaro Yonei, Kazuki Maruta
, Chang-Jun Ahn:
Frame splitting and data-aided decision direct channel estimation for OFDM in fast varying fading channels. ICT Express 6(3): 249-252 (2020) - [c50]Shun Kojima, Kazuki Maruta
, Chang-Jun Ahn:
High-precision SNR Estimation by CNN using PSD Image for Adaptive Modulation and Coding. VTC Spring 2020: 1-5 - [c49]Kazuki Maruta
, Shun Kojima, Chang-Jun Ahn, Daisuke Hisano, Yu Nakayama:
Blind SIR Estimation by Convolutional Neural Network Using Visualized IQ Constellation. VTC Spring 2020: 1-2 - [c48]Kabuto Arai, Kazuki Maruta
, Chang-Jun Ahn:
High Beamforming Gain Precoding Weight Design Scheme with Null-Space Expansion for Multiuser Massive MIMO in Time-Varying Channels. WPMC 2020: 1-4 - [c47]Nobutaka Funaki, Kazuki Maruta
, Chang-Jun Ahn:
Improved Null-Space Expansion Scheme under Presence of Channel Estimation Error for Multiuser Massive MIMO. WPMC 2020: 1-4 - [c46]Toshiya Hanada, Chang-Jun Ahn, Kazuki Maruta
:
Improving DOA Estimation Accuracy by Rotating Planar Array Antenna. WPMC 2020: 1-4 - [c45]Seiya Hirano, Kazushi Shimada, Shun Kojima, Kazuki Maruta
, Chang-Jun Ahn:
Reducing FBI and MLI Using FSS Method for Adaptive Modulated VLC-OFDM System. WPMC 2020: 1-4 - [c44]Hiroaki Kobayashi, Kazuki Maruta
, Takatoshi Sugiyama, Chang-Jun Ahn:
Computationally Efficient SLM based PAPR Reduction for STPA-BAA Scheme. WPMC 2020: 1-4
2010 – 2019
- 2019
- [j44]Shun Kojima
, Kazuki Maruta
, Chang-Jun Ahn:
Adaptive Modulation and Coding Using Neural Network Based SNR Estimation. IEEE Access 7: 183545-183553 (2019) - [j43]Satoshi Taroda, Ken Tezuka, Shoichi Higuchi, Chang-Jun Ahn, Kazuki Maruta
:
Transmit power imbalance reduction method and nonlinear companding transform for beamforming OFDM systems. ICT Express 5(4): 261-265 (2019) - [j42]Takashi Akao, Koya Watanabe, Shun Kojima, Masato Katsuno, Kazuki Maruta
, Chang-Jun Ahn:
Reducing channel spatial correlation by rotating planar antenna array. ICT Express 5(4): 271-275 (2019) - [j41]Koya Watanabe, Shun Kojima, Takashi Akao, Masato Katsuno, Kazuki Maruta
, Chang-Jun Ahn:
Modified pilot selection for channel estimation of systematic polar coded MIMO-OFDM. ICT Express 5(4): 276-279 (2019) - [j40]Kazuki Maruta
, Chang-Jun Ahn:
Improving Semi-Blind Uplink Interference Suppression on Multicell Massive MIMO Systems: A Beamspace Approach. IEICE Trans. Commun. 102-B(8): 1503-1511 (2019) - [c43]Koki Ito, Kazuki Maruta, Chang-Jun Ahn:
Outage Probability Analysis of MF Precoded Massive MIMO with Multi-antenna User Environment. APCC 2019: 50-54 - [c42]Kouichi Motosugi, Kentaro Yonei, Kazuki Maruta, Chang-Jun Ahn:
Fast Fading Compensation by Frame Splitting and Decision Directed Channel Extrapolation for OFDM. APCC 2019: 131-135 - [c41]Kazushi Shimada, Mitsuki Takahashi, Kazuki Maruta, Chang-Jun Ahn:
Channel Ranking based Spread Code Optimization for Visible Light Communication OFDM-IDMA Systems. APCC 2019: 185-189 - [c40]Kakeru Matsubara, Shun Kuroki, Kazuki Maruta, Chang-Jun Ahn:
Modified HTRCI with Time-domain CSI Separation for Pilot De-contamination. APCC 2019: 226-231 - [c39]Kosuke Shima, Katsuya Senoo, Kenta Goto, Kazuki Maruta, Chang-Jun Ahn:
Data-aided SMI Algorithm using Common Correlation Matrix for Adaptive Array Interference Suppression. APCC 2019: 398-402 - [c38]Naoya Tanuma, Ryo Marumo, Kazuki Maruta, Chang-Jun Ahn:
Known Bits Puncturing for Systematic Polar Codes. APCC 2019: 511-515 - [c37]Kazuki Maruta
, Chang-Jun Ahn:
Enhanced Semi-Blind Uplink Interference Suppression on Multicell Massive MIMO Systems for Multi Modulus Signals. VTC Fall 2019: 1-6 - 2018
- [j39]Kazuki Maruta
, Chang-Jun Ahn:
Uplink Interference Suppression by Semi-Blind Adaptive Array With Decision Feedback Channel Estimation on Multicell Massive MIMO Systems. IEEE Trans. Commun. 66(12): 6123-6134 (2018) - [c36]Koya Watanabe, Shun Kojima, Takashi Akao, Masato Katsuno, Kazuki Maruta, Chang-Jun Ahn:
Modified Pilot Selection for Systematic Polar Coded MIMO-OFDM Channel Estimation. ISPACS 2018: 237-241 - [c35]Takashi Akao, Koya Watanabe, Shun Kojima, Masato Katsuno, Kazuki Maruta, Chang-Jun Ahn:
Reducing Channel Spatial Correlation by Rotating Planar Antenna Array. ISPACS 2018: 242-245 - [c34]Kazuki Maruta, Yu Nakayama
, Kazuaki Honda
, Daisuke Hisano, Chang-Jun Ahn:
V2P Connectivity on Higher Frequency Band and CoMP Based Coverage Expansion. PIMRC 2018: 568-569 - [c33]Shun Kojima, Takashi Akao, Koya Watanabe, Masato Katsuno, Kazuki Maruta, Chang-Jun Ahn:
Adaptive Switching Method with AMC and FSS. SoftCOM 2018: 1-6 - 2017
- [j38]Wenjian Wang, Ye Tian, Chang-Jun Ahn:
Blind symbol timing synchronization scheme for real-time industrial wireless control network using high-speed preambleless OFDM systems over multipath fading channels. Digit. Signal Process. 62: 30-37 (2017) - [j37]Shoichi Higuchi, Chang-Jun Ahn:
Reduced complexity and latency for a massive MIMO system using a parallel detection algorithm. ICT Express 3(3): 119-123 (2017) - [c32]Masato Katsuno, Shoichi Higuchi, Kazuki Maruta
, Chang-Jun Ahn:
Improving scattered pilot channel estimation by sector selection on FDD MIMO/OFDM systems. WPMC 2017: 22-27 - [c31]Shun Kojima, Ken Teduka, Kazuki Maruta
, Chang-Jun Ahn:
Optimized adaptive modulation with considering mobile relay on FSS-OFDM system. WPMC 2017: 41-45 - [c30]Takashi Akao, Satoshi Taroda, Kazuki Maruta
, Chang-Jun Ahn:
Improved common correlation matrix based SMI algorithm by channel estimation error minimization with LMS approach. WPMC 2017: 63-67 - [c29]Koya Watanabe, Shoichi Higuchi, Kazuki Maruta
, Chang-Jun Ahn:
Performance of polar codes with MIMO-OFDM under frequency selective fading channel. WPMC 2017: 107-111 - [c28]Ye Tian, Daito Shigaki, Wenjian Wang, Chang-Jun Ahn:
A weighted least-squares method using received signal strength measurements for WLAN indoor positioning system. WPMC 2017: 310-314 - 2016
- [j36]Chang-Jun Ahn:
An applicable 5.8 GHz wireless power transmission system with rough beamforming to Project Loon. ICT Express 2(2): 87-90 (2016) - [c27]Atul Sewaiwar, Samrat Vikramaditya Tiwari, Yeon-ho Chung, Chang-Jun Ahn:
Color cell based bidirectional VLC with user mobility. ICC Workshops 2016: 21-25 - [c26]Fumiaki Ukaji, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto:
Performance enhancement with applying FSS and ASB method for MU-MIMO. ICIT 2016: 860-865 - 2015
- [j35]Yuta Ida, Masanori Yofune, Chang-Jun Ahn, Takahiro Matsumoto
, Shinya Matsufuji:
Estimation based on weighted channel variance for HTRCI-MIMO/OFDM with QRM-MLD and channel ranking under fast fading Channel. Trans. Emerg. Telecommun. Technol. 26(7): 1050-1059 (2015) - [j34]Hikaru Oka
, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto:
IQ imbalance estimation and compensation schemes based on time-frequency interferometry for OFDM. Trans. Emerg. Telecommun. Technol. 26(9): 1165-1172 (2015) - [j33]Yuta Ida, Chang-Jun Ahn, Takahiro Matsumoto
, Shinya Matsufuji:
Achievement Accurate CSI for AF Relay MIMO/OFDM Based on Complex HTRCI Pilot Signal with Enhanced MMSE Equalization. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 98-A(11): 2254-2262 (2015) - [j32]Hisato Fujisaka, Takeshi Kamio, Chang-Jun Ahn, Masahiro Sakamoto, Kazuhisa Haeiwa:
A Sigma-Delta Domain Lowpass Wave Filter. IEEE Trans. Circuits Syst. I Regul. Pap. 62-I(1): 167-176 (2015) - [c25]Wenjian Wang, Ye Tian, Chang-Jun Ahn:
A novel time synchronization scheme for OFDM systems based on variational Pseudo-noise preamble. APSITT 2015: 1-3 - [c24]Asato Kuriharat, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto:
An application of OFDM-IDMA to uplink multiuser visible light communication system. ISPACS 2015: 412-416 - [c23]Kotaro Abe, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto:
Spatial performance of color clustered VLC-MIMO due to incompleteness of color filters. ISPACS 2015: 417-421 - [c22]Ye Tian, Wenjian Wang, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto:
The accuracy improvement using WLAN for indoor positioning system. ISPACS 2015: 474-478 - [c21]Masaya Okamura, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto:
Channel compensation based on VPS and time-frequency interferometry for massive MIMO-OFDM. ISPACS 2015: 532-536 - 2014
- [j31]Naotoshi Yoda, Chang-Jun Ahn, Ken-ya Hashimoto:
Single Symbol Decodable QO-STBC with Full Diversity. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 97-A(1): 2-6 (2014) - [j30]Yuta Ida, Chang-Jun Ahn, Takahiro Matsumoto
, Shinya Matsufuji:
Removing Deep Faded Subcarrier Channel for Cooperative Multiuser Diversity OFDMA Based on Low Granularity Block. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 97-A(12): 2586-2594 (2014) - [j29]Chang-Jun Ahn, Incheol Jeong, Izumi Endo, Tatsuya Omori, Ken-ya Hashimoto:
Maritime VHF communications with polarization diversity over a Rician channel. Int. J. Commun. Syst. 27(10): 2443-2451 (2014) - [j28]Taichi Sakaue, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto:
Time Domain Replica Signal Based Interference Compensation for SP-MIMO/OFDM with Large Delay Spread Channel. Int. J. Distributed Syst. Technol. 5(4): 1-17 (2014) - [j27]Akihiro Kuroha, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto:
Multiuser Diversity OFDMA using Power Priority Selection and Adaptive Clipping. Int. J. Distributed Syst. Technol. 5(4): 18-30 (2014) - [c20]Hikaru Oka, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto:
IQ imbalance and carrier frequency offset compensation schemes for TFI-OFDM. ISPACS 2014: 17-22 - 2013
- [j26]Yuta Ida, Chang-Jun Ahn, Takeshi Kamio, Hisato Fujisaka, Kazuhisa Haeiwa:
Variable packet splitting transmission in multi-relay cooperative communications with DF and DAF for SC-FDMA. EURASIP J. Wirel. Commun. Netw. 2013: 64 (2013) - [c19]Yuta Ida, Chang-Jun Ahn, Takahiro Matsumoto
, Shinya Matsufuji:
Mitigated deep faded channel with relay node allocation for MUDiv/OFDMA. APCC 2013: 6-11 - [c18]Masayuki Kitakatay, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto:
Throughput performance enhancement applying adaptive modulation for single symbol decodable QO-STBC with full diversity. APCC 2013: 58-62 - [c17]Kei Okubo, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto:
Enhancement of cell-edge throughput performance with CoMP transmission using QO-STBC scheme. GCCE 2013: 496-499 - [c16]Naotoshi Yoda, Wenjian Wang, Chang-Jun Ahn:
Single symbol decodable QO-STBC with full diversity. ICSPCS 2013: 1-5 - [c15]Hikaru Oka, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto:
IQ imbalance estimation and compensation schemes based on time frequency interferometry for OFDM. IWSDA 2013: 126-129 - [c14]Yuta Ida, Masanori Yofune, Chang-Jun Ahn, Takahiro Matsumoto
, Shinya Matsufuji:
Non-linear fast fading compensation for HTRCI-MIMO/OFDM with QRM-MLD and channel ranking. IWSDA 2013: 130-133 - [c13]Taichi Sakaue, Tomoki Yoshimura, Yuta Ida, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto:
Interference compensation scheme using time domain replica signals for SP-MIMO/OFDM under large delay spread channel greater than GI. RIVF 2013: 37-40 - [c12]Akihiro Kuroha, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto:
Power priority selection and adaptive clipping with peak reduction signal for MUDiv/OFDMA. RIVF 2013: 85-90 - 2012
- [j25]Chang-Jun Ahn, Dongsoo Har, Tatsuya Omori, Ken-ya Hashimoto:
Frequency symbol spreading based adaptive subcarrier block selection for OFDMA system. Digit. Signal Process. 22(3): 518-525 (2012) - [j24]Chang-Jun Ahn, Ken-ya Hashimoto:
Heterogeneous Constellation Based QOSTBC for Improving Detection Property of QRD-MLD. IEICE Trans. Commun. 95-B(8): 2674-2677 (2012) - [j23]Yuta Ida
, Chang-Jun Ahn, Takeshi Kamio, Hisato Fujisaka, Kazuhisa Haeiwa:
Interference Cancellation Using Replica Signal for HTRCI-MIMO/OFDM in Time-Variant Large Delay Spread Longer Than Guard Interval. J. Electr. Comput. Eng. 2012: 571985:1-571985:10 (2012) - [j22]Hisato Fujisaka, Takeshi Kamio, Chang-Jun Ahn, Masahiro Sakamoto, Kazuhisa Haeiwa:
Sorter-Based Arithmetic Circuits for Sigma-Delta Domain Signal Processing - Part I: Addition, Approximate Transcendental Functions, and Log-Domain Operations. IEEE Trans. Circuits Syst. I Regul. Pap. 59-I(9): 1952-1965 (2012) - [j21]Hisato Fujisaka, Masahiro Sakamoto, Chang-Jun Ahn, Takeshi Kamio, Kazuhisa Haeiwa:
Sorter-Based Arithmetic Circuits for Sigma-Delta Domain Signal Processing - Part II: Multiplication and Algebraic Functions. IEEE Trans. Circuits Syst. I Regul. Pap. 59-I(9): 1966-1979 (2012) - [c11]Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto:
Heterogeneous constellation based QOSTBC for improving property of QRD-MLD. ICCE 2012: 372-373 - 2011
- [j20]Hyunju Kim, Eonpyo Hong, Chang-Jun Ahn, Dongsoo Har:
Efficient phase sequence generation for SLM scheme without side information. IEICE Electron. Express 8(17): 1393-1398 (2011) - [j19]Hyunju Kim, Eonpyo Hong, Chang-Jun Ahn, Dong-Soo Har:
A Pilot Symbol Pattern Enabling Data Recovery Without Side Information in PTS-Based OFDM Systems. IEEE Trans. Broadcast. 57(2): 307-312 (2011) - 2010
- [j18]Chang-Jun Ahn:
Achievable throughput enhancement based on modified carrier interferometry for MIMO/OFDM. Digit. Signal Process. 20(5): 1447-1457 (2010) - [j17]Chang-Jun Ahn:
HTRCI and Channel Ranking Based Joint Symbols Detection for MQRD-PCM/MIMO-OFDM. Wirel. Pers. Commun. 55(4): 485-499 (2010)
2000 – 2009
- 2009
- [j16]Takeshi Yoshimura, Chang-Jun Ahn, Takeshi Kamio, Hisato Fujisaka, Kazuhisa Haeiwa:
Performance enhancement of TFI-OFDM with path selection based channel identification. Digit. Signal Process. 19(5): 852-860 (2009) - [j15]Chang-Jun Ahn:
Link Correlation Based Transmit Sector Antenna Selection for Alamouti Coded OFDM. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 92-A(3): 816-823 (2009) - [j14]Chang-Jun Ahn:
Performance Enhancement of MQRD-PCM/MIMO-OFDM Using Channel Ranking Based Joint Symbols Detection. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 92-A(8): 1913-1919 (2009) - [c10]Chang-Jun Ahn:
Channel Ranking Based Joint Symbols Detection for MQRD-PCM/MIMO-OFDM. CCNC 2009: 1-5 - [c9]Takashi Yasuno, Yoshinao Suzuki, Hisato Fujisaka, Takeshi Kamio, Chang-Jun Ahn, Kazuhisa Haeiwa:
A single-eletron bandpass digital wave filter. ECCTD 2009: 882-885 - [c8]Yasuhiro Okada, Hisato Fujisaka, Takeshi Kamio, Chang-Jun Ahn, Kazuhisa Haeiwa:
Ising spin-grass error correction for unreliable nanoelectronic logic circuits. ECCTD 2009: 886-889 - 2008
- [j13]Chang-Jun Ahn:
Throughput Improvement with Discrete Pilot Signal Assignment and Iterative Channel Identification for MQRD-PCM/OFDM. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 91-A(8): 2000-2007 (2008) - [j12]Chang-Jun Ahn:
Parallel Detection Algorithm Using Multiple QR Decompositions With Permuted Channel Matrix for SDM/OFDM. IEEE Trans. Veh. Technol. 57(4): 2578-2582 (2008) - [c7]Chang-Jun Ahn:
High Time Resolution Carrier Interferometry for MIMO/OFDM. CCNC 2008: 393-397 - [c6]Chang-Jun Ahn:
Parallel detection algorithm using multiple QR decompositions with permuted channel matrix for SDM/OFDM. ISWPC 2008: 101-105 - 2007
- [j11]Chang-Jun Ahn:
Accurate Channel Identification with Time-Frequency Interferometry for OFDM. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 90-A(11): 2641-2645 (2007) - [c5]Takeshi Kamio, Kenji Mori, Kunihiko Mitsubori, Chang-Jun Ahn, Hisato Fujisaka, Kazuhisa Haeiwa:
Fuzzy ARTMAP with Explicit and Implicit Weights. ICONIP (1) 2007: 299-308 - [c4]Chang-Jun Ahn, Satoshi Takahashi, M. Taromaru:
Link Correlation based Transmit Sector Antenna Selection for Alamouti Coded OFDM. WCNC 2007: 869-873 - 2006
- [j10]Satoshi Takahashi, Chang-Jun Ahn, Hiroshi Harada
:
Stochastic Method of Determining Substream Modulation Levels for MIMO Eigenbeam Space Division Multiplexing. IEICE Trans. Commun. 89-B(1): 142-149 (2006) - [j9]Chang-Jun Ahn, Hiroshi Harada
, Yukiyoshi Kamio:
Superimposed Frequency Symbol Based Adaptive Downlink OFDM with Frequency Spreading and Equalization. IEICE Trans. Commun. 89-B(2): 500-508 (2006) - [j8]Nam-Su Kim, Sungho Cho
, Chang-Jun Ahn:
Subcarrier Block Power Control for Adaptive Downlink OFDM with Frequency Spreading and Equalization. IEICE Trans. Commun. 89-B(7): 2102-2105 (2006) - [j7]Chang-Jun Ahn:
Unitary matrix modulation with splitting over the coherence bandwidth for OFDM in a single antenna system. Wirel. Commun. Mob. Comput. 6: 1037-1045 (2006) - 2005
- [j6]Chang-Jun Ahn, Satoshi Takahashi, Hiroshi Harada
:
Differential Modulated Pilot Symbol Assisted Adaptive OFDM for Reducing the MLI with Predicted FBI. IEICE Trans. Commun. 88-B(2): 436-442 (2005) - [j5]Chang-Jun Ahn, Satoshi Takahashi, Hiroshi Harada
, Yukiyoshi Kamio, Iwao Sasase:
Adaptive Subcarrier Block Modulation with Differentially Modulated Pilot Symbol Assistance for Downlink OFDM Using Uplink Delay Spread. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 88-A(7): 1889-1896 (2005) - [j4]Satoshi Takahashi, Chang-Jun Ahn, Hiroshi Harada
, Yukiyoshi Kamio:
Effect of Delay Spread Enhancement in MIMO Eigenbeam Space Division Multiplexing Transmission. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 88-A(7): 1931-1935 (2005) - [c3]Chang-Jun Ahn, Satoshi Takahashi, Hiroshi Harada:
Adaptive subcarrier block modulation with differentially modulated pilot symbol assistance for downlink OFDM using uplink delay spread. PIMRC 2005: 1125-1129 - 2004
- [c2]Chang-Jun Ahn, K. Kamio, Satoshi Takahashi, Hiroshi Harada:
Reverse link performance improvement for an wideband OFDM using Alamouti coded heterogeneous polarization antennas. ISCC 2004: 702-707 - [c1]Hiroshi Harada, Chang-Jun Ahn, Satoshi Takahashi, Yukiyoshi Kamio, Seiichi Sampei:
Dynamic parameter controlled orthogonal frequency and time division multiple access. PIMRC 2004: 2648-2652 - 2003
- [j3]Chang-Jun Ahn, Iwao Sasase:
Pilot symbol assisted high speed packet transmission system based on adaptive OFDM in broadband mobile channel. J. Commun. Networks 5(1): 25-32 (2003) - 2002
- [j2]Chang-Jun Ahn, Iwao Sasase:
Code Orthogonalizing Filter Based Adaptive Array Antenna Using Common Correlation Matrix of Time Domain Signals for Multicarrier DS/CDMA Systems. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 85-A(7): 1604-1611 (2002) - [j1]Chang-Jun Ahn, Iwao Sasase:
The effects of modulation combination, target BER, Doppler frequency, and adaptation interval on the performance of adaptive OFDM in broadband mobile channel. IEEE Trans. Consumer Electron. 48(1): 167-174 (2002)
Coauthor Index
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last updated on 2024-04-25 05:44 CEST by the dblp team
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