Search Results 1-20 of 38

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  • Low-Complexity Viterbi Equalizer for MBOK DS-UWB Systems

    TAKIZAWA Kenichi , KOHNO Ryuji

    … One is the use of delayed-decision feedback sequence estimation (DDFSE), which is a hybrid estimation between MLSE and decision feedback estimation (DFE). … The reduced complexity sequence estimation is named as reduced state (RS)-DDFSE. … By the use of RS-DDFSE, the complexity of Viterbi equalizer for MBOK DS-UWB is significantly reduced, by comparison with that of MLSE. …

    IEICE Trans. Fundamentals 88(9), 2350-2355, 2005-09-01

    References (14) Cited by (1)

  • Spatio-Temporal Equalization for Space-Time Block Coded Transmission over Frequency Selective Fading Channel with Co-channel Interference

    TRAN Xuan Nam , TANIGUCHI Tetsuki , KARASAWA Yoshio

    … It is to show that our scheme outperforms the previous two-stage combined adaptive antenna and delayed decision feedback sequence estimator (DDFSE) approach. …

    IEICE Trans. Fundamentals, A 88(3), 660-668, 2005-03-01

    References (23) Cited by (8)

  • Reduced-Complexity Viterbi Equalizer for MBOK DS-UWB  [in Japanese]

    TAKIZAWA Kenichi , KOHNO Ryuji

    … By using a delayed decison feedback sequence estimation (DDFSE) and introducing a reduced-state algorithm that we proposed, the reduced-compelxity Viterbi equalizer shows almost the same performance as a maximum likelihood sequence estimation (MLSE)-based Viterbi equalizer. …

    IEICE technical report. Signal processing 104(214), 17-20, 2004-07-15

    References (7) Cited by (2)

  • Reduced-Complexity Viterbi Equalizer for MBOK DS-UWB  [in Japanese]

    TAKIZAWA Kenichi , KOHNO Ryuji

    … By using a delayed decison feedback sequence estimation (DDFSE) and introducing a reduced-state algorithm that we proposed, the reduced-compelxity Viterbi equalizer shows almost the same performance as a maximum likelihood sequence estimation (MLSE)-based Viterbi equalizer. …

    IEICE technical report. WBS, Wideband System 104(216), 17-20, 2004-07-15

    References (7)

  • Chip-based Joint Processing Adaptive Array and Equalizer for DS-CDMA Packet Mobile Communication Systems  [in Japanese]

    SATO Yohei , FUKAWA Kazuhiko , SUZUKI Hiroshi

    … The MLSE equalizer part, which employs DDFSE (Delayed Decision-Feedback Sequence Estimation) so as to reduce the computational complexity, estimates the chip-level transmitted signals by removing ISI components from the array output. …

    Technical report of IEICE. RCS 102(464), 17-22, 2002-11-14

    References (7)

  • Delayed Decision Feedback Sequence Estimation for Multibeam Interference Cancellation  [in Japanese]

    Denno Satoshi

    Proceedings of the Society Conference of IEICE 2001年.通信ソサイエティ大会講演論文集(1), 443, 2001-08-29

  • Transmission Performance of Beam and Null Simultaneous Steering S/T-Equalizer  [in Japanese]

    MIKI Nobuhiko , ASAI Takahiro , TOMISATO Shigeru , MATSUMOTO Tadashi

    … For temporal equalization, a conventional DDFSE-type equalizer is used. …

    Technical report of IEICE. RCS 100(82), 7-12, 2000-05-18

    References (8)

  • Transmission Performance of Beam and Null Simultaneous Steering S/T-Equalizer  [in Japanese]

    MIKI Nobuhiko , ASAI Takahiro , TOMISATO Shigeru , MATSUMOTO Tadashi

    … For temporal equalization, a conventional DDFSE-type equalizer is used. …

    IEICE technical report. Communication systems 100(80), 7-12, 2000-05-18

    References (8)

  • Path Restricted DDFSE with less performance dependencies on channel response characteristics  [in Japanese]

    KAKURA Yoshikazu

    Proceedings of the IEICE General Conference 2000年.通信(1), 545, 2000-03-07

  • Performances of an Adaptive Equalizer with Metric Combining Space- and Time-Diversity for Broadband Communications  [in Japanese]

    MIKI Nobuhiko , KAWASHIMA Makoto , TOMISATO Shigeru , MATSUMOTO Tadashi

    In broadband mobile communications, inter-symbol interference is one of the major problems to overcome. Adaptive equalizers have been considered effective in solving the problem. This paper proposes a …

    Technical report of IEICE. RCS 99(357), 115-120, 1999-10-15

    References (7)

  • Performances of an Adaptive Equalizer with Metric Combining Space- and Time-Diversity for Broadband Communications  [in Japanese]

    MIKI Nobuhiko , KAWASHIMA Makoto , TOMISATO Shigeru , MATSUMOTO Tadashi

    In broadband mobile communications, inter-symbol interference is one of the major problems to overcome. Adaptive equalizers have been considered effective in solving the problem. This paper proposes a …

    IEICE technical report. Antennas and propagation 99(355), 115-120, 1999-10-15

    References (7)

  • A Proposal of received signal estimation by Past Metric Addition MLSCE  [in Japanese]

    KAKURA Yoshikazu , OKANOUE Kazuhiro , OHSAWA Tomoki

    … As the result of computer simulation, it shows that this method can suppress the PER performances within ldB of E_b/N_o, compared to those of DDFSE with reduction of received signal estimation operation of more than 50% in maximum. …

    Technical report of IEICE. RCS 98(602), 63-68, 1999-02-19

    References (9)

  • A Proposal of received signal estimation by Past Metric Addition MLSCE  [in Japanese]

    KAKURA Yoshikazu , OKANOUE Kazuhiro , OHSAWA Tomoki

    … As the result of computer simulation, it shows that this method can suppress the PER perrormances within 1dB of Eb/No, compared to those of DDFSE with reduction of received signal estimationo peration of more than 50% in maximum. …

    Technical report of IEICE. SST 98(596), 63-68, 1999-02-19

  • A Proposal of received signal estimation by Past Metric Addition MLSCE  [in Japanese]

    KAKURA Yoshikazu , OKANOUE Kazuhiro , OHSAWA Tomoki

    … As the result of computer simulation, it shows that this method can suppress the PER performances within 1 dB of E_b/N_0, compared to those of DDFSE with reduction of received signal estimation operation of more than 50% in maximum. …

    IEICE technical report. Antennas and propagation 98(599), 63-68, 1999-02-19

    References (10)

  • A Proposal of received signal estimation by Past Metric Addition MLSCE  [in Japanese]

    KAKURA Yoshikazu , OKANOUE Kazuhiro , OHSAWA Tomoki

    … As the result of computer simulation, it shows that this method can suppress the PER perrormances within 1dB of Eb/No, compared to those of DDFSE with reduction of received signal estimationo peration of more than 50% in maximum. …

    IEICE technical report. Microwaves 98(605), 63-68, 1999-02-19

    References (9)

  • High Speed Wireless modem Using Delayed Decision Feedback Sequence Estimator  [in Japanese]

    MARUYAMA Hidenori , MATUI Hitosi , OHKI Masahiro , FUJITA Yuji

    … 5GHz band 25Mbps wireless modem system with real time processing is materialized and the excellent performance under real environment is cofirmed.The modem system with Delayed Decision Feedback Sequence Estimator(DDFSE)realized on one LSI chip can operate under frequency stability ±20ppm and equalize 500ns delay wave under 2-path model for burst transmission. …

    Technical report of IEICE. RCS 98(358), 13-18, 1998-10-22

    References (5)

  • High Speed Wireless modem Using Delayed Decision Feedback Sequence Estimator  [in Japanese]

    MARUYAMA Hidenori , MATUI Hitosi , OHKI Masahiro , FUJITA Yuji

    … The modem system with Delayed Decision Feedback Sequence Estimator(DDFSE)realizaed on one LSI chip can operate under frequency stability ±20ppm and waualize 500ns delay wave under 2-path model for burst transmission. …

    IEICE technical report. Antennas and propagation 98(355), 13-18, 1998-10-22

    References (5) Cited by (1)

  • A Receiver with Interative Soft Decision and Forward Error Correction  [in Japanese]

    NAGAYASU Takayuki , KUBO Hiroshi , MURAKAMI Keishi , FUJINO Tadashi , MORINAGA Norihiko

    … レーションにより提案方式の特性を評価した.その結果, (1)等化器としてMLSE(Maximum-Likelihood Sequence Estimation)を用いた提案方式が, MAP(Maximum a Posteriori)等化器やMLSEを用いた従来方式よりもBER特性が優れていること, (2)遅延分散の大きな伝送路において, MLSEの代わりにDDFSE(Delayed Decision-Feedback Sequence Estimation)を用いた提案方式のBER特性の劣化はわずかであり, MLSEを用いた従来方式よりも処理量を大幅に削減できることを確認した. …

    The Transactions of the Institute of Electronics,Information and Communication Engineers. B-(0xF9C2) 00081(00008), 742-750, 1998-08

    References (14) Cited by (5)

  • Applicability and BER performance for timing offset of adaptive DDFSE  [in Japanese]

    MUNETA Satoshi , UWANO Shuta , YAMASHITA Naonobu , MATSUE Hideaki

    Proceedings of the IEICE General Conference 1998年.通信(1), 658, 1998-03-06

  • Study on Automatic Frequency Control for the Adaptive DDFSE  [in Japanese]

    UWANO Shuta , YAMASHITA Naonobu , MUNETA Satoshi , MATSUE Hideaki

    Proceedings of the IEICE General Conference 1998年.通信(1), 422, 1998-03-06

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