Search Results 1-20 of 364

  • Improved adaptive STBC-TD in low-to-high mobility environments

    Saito Tomoyuki , Boonkajay Amnart , Adachi Fumiyuki

    … In this paper, we propose an improved adaptive STBC-TD, in which the use of DFLP is adaptively decided based on the minimum mean square error (MMSE) criterion of the soft-decision symbol output. …

    IEICE Communications Express 8(5), 141-146, 2019

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  • Non-Orthogonal Pilot Analysis for Single-Cell Massive MIMO Circumstances

    LI Pengxiang , GAO Yuehong , LI Zhidu , YANG Hongwen

    … Specifically, closed-form expressions of the normalized channel estimation error and achievable uplink capacity are derived for both least squares (LS) and minimum mean square error (MMSE) estimation. …

    IEICE Transactions on Communications E102.B(4), 901-912, 2019

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  • A Conditional ℓ1 Regularized MMSE Channel Estimation Technique for IBI Channels

    Takano Yasuhiro , Su Hsuan-Jung , Juntti Markku , Matsumoto Tad

    … Inter-block-interference (IBI) caused in the pursuit of spectral efficiency can deteriorate channel estimation performance. … For this problem, previously-proposed chained turbo estimation performs IBI cancelation by using the soft replica of the transmitted signal. … This paper proposes, therefore, a new conditional l1 regularized minimum mean square error channel estimation algorithm by jointly utilizing the IBI avoidance/cancelation and subspace techniques. …

    IEEE Transactions on Wireless Communications 17(10), 6720-6734, 2018-10

    IR  IR 

  • Study on Adaptive MMSE-SVD for the tracking ability against fading  [in Japanese]

    関 裕太 , ブンカジャイ アムナート , 安達 文幸

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 117(456), 13-18, 2018-02-28

  • A study on Estimation of MMSE Score using EEG data  [in Japanese]

    三輪 晃暉 , 高倉 健太郎 , 吉川 大弘 , 古橋 武 , 寳珠山 稔 , 牧野 多恵子 , 柳川 まどか , 鈴木 裕介 , 梅垣 宏行 , 葛谷 雅文

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 117(417), 5-10, 2018-01-26

  • Identification of Partial Regression Coefficient of Alpha Wave for Estimation of MMSE Score  [in Japanese]

    MIWA Koki , Yoshikawa Tomohiro , Furuhashi Takeshi , Hoshiyama Minoru , Makino Taeko , Yanagawa Madoka , Suzuki Yusuke , Umegaki Hiroyuki , Kuzuya Masafumi

    … 量であるP300頂点潜時は,認知症スクリーニング検査のMMSE(Mini Mental State Examination)スコア,課題の難易度,年齢,教育歴とそれぞれ関係があることが,個々に報告されている.そのため,P300頂点潜時を計測することでMMSEスコアを推定できれば,認知症の兆候を捉えられ,認知症早期発見につながると期待される.しかしMMSEスコアとP300頂点潜時等との関係は,これまで定量的に …

    Proceedings of the Fuzzy System Symposium 34(0), 15-18, 2018

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  • Study on Frequency-domain Equalization Scheme for High-speed Digital Power Line Carrier Systems  [in Japanese]

    Sasaki Norio , Chen Qiang , Adachi Fumiyuki

    … <p>In this paper, we study a minimum mean square error based frequency-domain equalization (MMSE-FDE)scheme for a high-speed digital power line carrier system achieving 1.1 Mbps using 300 kHz bandwidth. … TS acts as the cyclic prefix (CP) for MMSE-FDE. … The channel estimation and noise power estimation are done using TS for computing the MMSE-FDE weight. …

    IEEJ Transactions on Electronics, Information and Systems 138(12), 1529-1538, 2018

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  • A Low-Complexity Signal Detection Approach in Uplink Massive MIMO Systems

    LIANG Zhuojun , DING Chunhui , HE Guanghui

    … <p>A low-complexity signal detection approach based on the Kaczmarz algorithm (KA) is proposed to iteratively realize minimum mean square error (MMSE) detection for uplink massive multiple-input multiple-output (MIMO) systems. … While KA is used for straightforward matrix inversion, the MMSE detection requires the computation of the Gram matrix with high complexity. … In order to avoid the Gram matrix computation, an equivalent augmented matrix is applied to KA-based MMSE detection. …

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E101.A(7), 1115-1119, 2018

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  • Adaptive MMSE-SVD for OFDM downlink MU-MIMO in a high mobility environment

    Seki Yuta , Adachi Fumiyuki

    … <p>In this paper, we propose an adaptive minimum mean square error filtering combined with singular value decomposition (MMSE-SVD) for OFDM downlink multi-user multi-input multi-output (MU-MIMO) transmission. … During data transmission, base station (BS) updates the multi-user MMSE transmit filter by using linear channel prediction, while user equipments (UEs) update their eigenmode receive filters, constructed by SVD, by using decision feedback adaptive channel estimation. …

    IEICE Communications Express 7(6), 195-200, 2018

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  • Adaptive MMSE-SVD for OFDM downlink MU-MIMO in a high mobility environment

    Seki Yuta , Adachi Fumiyuki

    … <p>In this paper, we propose an adaptive minimum mean square error filtering combined with singular value decomposition (MMSE-SVD) for OFDM downlink multi-user multi-input multi-output (MU-MIMO) transmission. … During data transmission, base station (BS) updates the multi-user MMSE transmit filter by using linear channel prediction, while user equipments (UEs) update their eigenmode receive filters, constructed by SVD, by using decision feedback adaptive channel estimation. …

    IEICE Communications Express, 2018

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  • Performance of Interference Rejection Combining Receiver Employing Minimum Mean Square Error Filter for Licensed-Assisted Access

    YAMAMOTO Jumpei , BUSHISUE Shunichi , MIKI Nobuhiko

    … The interference rejection combining (IRC) receiver, which employs a linear minimum mean square error (MMSE) filter, can suppress this interference from WiFi access points in addition to that of the LAA base station. …

    IEICE Transactions on Communications E101.B(1), 137-145, 2018

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  • Performance of L1 regularized channel estimation techniques using information criteria  [in Japanese]

    高野 泰洋

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 116(396), 227-230, 2017-01-19

  • Performance of L1 regularized channel estimation techniques using information criteria  [in Japanese]

    高野 泰洋

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 116(395), 227-230, 2017-01-19

  • Performance of L1 regularized channel estimation techniques using information criteria  [in Japanese]

    高野 泰洋

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 116(394), 227-230, 2017-01-19

  • A Study of Estimation of MMSE Score using EEG Data  [in Japanese]

    MIWA Koki , YOSHIKAWA TOMOHIRO , FURUHASHI TOMOHIRO

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    Proceedings of the Fuzzy System Symposium 33(0), 543-546, 2017

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  • Performance comparison of SSB-DFTs-OFDM and DFTs-OFDM for ultra multi-level modulation in frequency-selective fading  [in Japanese]

    房安 宏和 , 鈴木 智也 , 梅比良 正弘 , 阿部 順一

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 116(184), 89-94, 2016-08-18

  • Experimental validation of attitude estimation of an orbital object with minimum mean square error approach and particle filter  [in Japanese]

    UEDA Satoshi , ABIKO Satoko

    … Attitude estimation of the floating target is one of the key technology for active removal mission. … This paper presents experimental validation of attitude estimation with particle filter. … In this paper, Minimum Mean Square Error Approach (MMSE) is applied to estimate quaternion parameters. … The proposed estimation method is verified by experiment.</p> …

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2016(0), 2A2-17a6, 2016

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  • Iterative Robust MMSE Receiver for STBC under Channel Information Errors

    YOO Namsik , BAEK Jong-Hyen , LEE Kyungchun

    … <p>In this paper, an iterative robust minimum-mean square error (MMSE) receiver for space-time block coding (STBC) is proposed to mitigate the performance degradations caused by channel state information (CSI) errors. …

    IEICE Transactions on Communications E99.B(10), 2228-2235, 2016

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  • A Linear Combining Scheme to Suppress Interference in Multiple Relay Systems

    CANBOLAT Ahmet Ihsan , FUKAWA Kazuhiko

    … It is demonstrated that the RLS-based linear combining with decision directed estimation is superior to the RLS-based linear combining using only the preamble and can outperform the minimum mean-squared error (MMSE) combining with estimated CSI when the number of preamble symbols is two and four that correspond to the minimum requirements for MMSE and RLS, respectively.</p> …

    IEICE Transactions on Communications E99.B(8), 1867-1873, 2016

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  • Self Optimization Beam-Forming Null Control Based SINR Improvement

    BASNET Modick , MAR Jeich

    … The SOBNC is used to control the antenna pattern for SINR estimation and improve the SINR performance of the wireless communication systems. … Finally, simulation results show a performance superiority of the proposed SOBNC compared with minimum mean square error (MMSE) based adaptive nulling control algorithm and conventional fixed null scheme. …

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E99.A(5), 963-972, 2016

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