The Experts below are selected from a list of 16089 Experts worldwide ranked by ideXlab platform
F. Adachi - One of the best experts on this subject based on the ideXlab platform.
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Iterative decision-Directed Path search and channel estimation for multi-carrier/DS-CDMA broadband packet wireless access
VTC2000-Spring. 2000 IEEE 51st Vehicular Technology Conference Proceedings (Cat. No.00CH37026), 2000Co-Authors: H. Aturashi, S. Abeta, M. Sawahashi, F. AdachiAbstract:This paper proposes an iterative timing detection of multiPath components for coherent Rake combing (Path search) and channel estimation method in multi-carrier/DS-CDMA (MC/DS-CDMA) broadband packet wireless access, such as 20 Mbps packet transmission over a 100 MHz bandwidth, including single-carrier/DS-CDMA (SC/DS-CDMA). In the proposed method, while the initial Path search and channel estimation are calculated using only time-multiplexed pilot symbols at the beginning of a packet, their results are refined by repeating the Path search and channel estimation using both pilot and decision-Directed data symbols. Computer simulation results demonstrate that the measured required average received E/sub b//N/sub 0/ for achieving the average packet error rate (PER)=10/sup -2/ can be improved by approximately 1.2, 1.3, 2.0, and 2.1 dB for the number of sub-carriers N/sub c/=1(SC/DS-CDMA), 4, 8, and 16, respectively, in an equal level 24-Path Rayleigh fading channel, when the number of pilot symbols is 64 and the number of iterations is 1.
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iterative decision Directed Path search and channel estimation for multi carrier ds cdma broadband packet wireless access
Vehicular Technology Conference, 2000Co-Authors: H. Aturashi, S. Abeta, M. Sawahashi, F. AdachiAbstract:This paper proposes an iterative timing detection of multiPath components for coherent Rake combing (Path search) and channel estimation method in multi-carrier/DS-CDMA (MC/DS-CDMA) broadband packet wireless access, such as 20 Mbps packet transmission over a 100 MHz bandwidth, including single-carrier/DS-CDMA (SC/DS-CDMA). In the proposed method, while the initial Path search and channel estimation are calculated using only time-multiplexed pilot symbols at the beginning of a packet, their results are refined by repeating the Path search and channel estimation using both pilot and decision-Directed data symbols. Computer simulation results demonstrate that the measured required average received E/sub b//N/sub 0/ for achieving the average packet error rate (PER)=10/sup -2/ can be improved by approximately 1.2, 1.3, 2.0, and 2.1 dB for the number of sub-carriers N/sub c/=1(SC/DS-CDMA), 4, 8, and 16, respectively, in an equal level 24-Path Rayleigh fading channel, when the number of pilot symbols is 64 and the number of iterations is 1.
H. Aturashi - One of the best experts on this subject based on the ideXlab platform.
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Iterative decision-Directed Path search and channel estimation for multi-carrier/DS-CDMA broadband packet wireless access
VTC2000-Spring. 2000 IEEE 51st Vehicular Technology Conference Proceedings (Cat. No.00CH37026), 2000Co-Authors: H. Aturashi, S. Abeta, M. Sawahashi, F. AdachiAbstract:This paper proposes an iterative timing detection of multiPath components for coherent Rake combing (Path search) and channel estimation method in multi-carrier/DS-CDMA (MC/DS-CDMA) broadband packet wireless access, such as 20 Mbps packet transmission over a 100 MHz bandwidth, including single-carrier/DS-CDMA (SC/DS-CDMA). In the proposed method, while the initial Path search and channel estimation are calculated using only time-multiplexed pilot symbols at the beginning of a packet, their results are refined by repeating the Path search and channel estimation using both pilot and decision-Directed data symbols. Computer simulation results demonstrate that the measured required average received E/sub b//N/sub 0/ for achieving the average packet error rate (PER)=10/sup -2/ can be improved by approximately 1.2, 1.3, 2.0, and 2.1 dB for the number of sub-carriers N/sub c/=1(SC/DS-CDMA), 4, 8, and 16, respectively, in an equal level 24-Path Rayleigh fading channel, when the number of pilot symbols is 64 and the number of iterations is 1.
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iterative decision Directed Path search and channel estimation for multi carrier ds cdma broadband packet wireless access
Vehicular Technology Conference, 2000Co-Authors: H. Aturashi, S. Abeta, M. Sawahashi, F. AdachiAbstract:This paper proposes an iterative timing detection of multiPath components for coherent Rake combing (Path search) and channel estimation method in multi-carrier/DS-CDMA (MC/DS-CDMA) broadband packet wireless access, such as 20 Mbps packet transmission over a 100 MHz bandwidth, including single-carrier/DS-CDMA (SC/DS-CDMA). In the proposed method, while the initial Path search and channel estimation are calculated using only time-multiplexed pilot symbols at the beginning of a packet, their results are refined by repeating the Path search and channel estimation using both pilot and decision-Directed data symbols. Computer simulation results demonstrate that the measured required average received E/sub b//N/sub 0/ for achieving the average packet error rate (PER)=10/sup -2/ can be improved by approximately 1.2, 1.3, 2.0, and 2.1 dB for the number of sub-carriers N/sub c/=1(SC/DS-CDMA), 4, 8, and 16, respectively, in an equal level 24-Path Rayleigh fading channel, when the number of pilot symbols is 64 and the number of iterations is 1.
M. Sawahashi - One of the best experts on this subject based on the ideXlab platform.
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Iterative decision-Directed Path search and channel estimation for multi-carrier/DS-CDMA broadband packet wireless access
VTC2000-Spring. 2000 IEEE 51st Vehicular Technology Conference Proceedings (Cat. No.00CH37026), 2000Co-Authors: H. Aturashi, S. Abeta, M. Sawahashi, F. AdachiAbstract:This paper proposes an iterative timing detection of multiPath components for coherent Rake combing (Path search) and channel estimation method in multi-carrier/DS-CDMA (MC/DS-CDMA) broadband packet wireless access, such as 20 Mbps packet transmission over a 100 MHz bandwidth, including single-carrier/DS-CDMA (SC/DS-CDMA). In the proposed method, while the initial Path search and channel estimation are calculated using only time-multiplexed pilot symbols at the beginning of a packet, their results are refined by repeating the Path search and channel estimation using both pilot and decision-Directed data symbols. Computer simulation results demonstrate that the measured required average received E/sub b//N/sub 0/ for achieving the average packet error rate (PER)=10/sup -2/ can be improved by approximately 1.2, 1.3, 2.0, and 2.1 dB for the number of sub-carriers N/sub c/=1(SC/DS-CDMA), 4, 8, and 16, respectively, in an equal level 24-Path Rayleigh fading channel, when the number of pilot symbols is 64 and the number of iterations is 1.
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iterative decision Directed Path search and channel estimation for multi carrier ds cdma broadband packet wireless access
Vehicular Technology Conference, 2000Co-Authors: H. Aturashi, S. Abeta, M. Sawahashi, F. AdachiAbstract:This paper proposes an iterative timing detection of multiPath components for coherent Rake combing (Path search) and channel estimation method in multi-carrier/DS-CDMA (MC/DS-CDMA) broadband packet wireless access, such as 20 Mbps packet transmission over a 100 MHz bandwidth, including single-carrier/DS-CDMA (SC/DS-CDMA). In the proposed method, while the initial Path search and channel estimation are calculated using only time-multiplexed pilot symbols at the beginning of a packet, their results are refined by repeating the Path search and channel estimation using both pilot and decision-Directed data symbols. Computer simulation results demonstrate that the measured required average received E/sub b//N/sub 0/ for achieving the average packet error rate (PER)=10/sup -2/ can be improved by approximately 1.2, 1.3, 2.0, and 2.1 dB for the number of sub-carriers N/sub c/=1(SC/DS-CDMA), 4, 8, and 16, respectively, in an equal level 24-Path Rayleigh fading channel, when the number of pilot symbols is 64 and the number of iterations is 1.
S. Abeta - One of the best experts on this subject based on the ideXlab platform.
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Iterative decision-Directed Path search and channel estimation for multi-carrier/DS-CDMA broadband packet wireless access
VTC2000-Spring. 2000 IEEE 51st Vehicular Technology Conference Proceedings (Cat. No.00CH37026), 2000Co-Authors: H. Aturashi, S. Abeta, M. Sawahashi, F. AdachiAbstract:This paper proposes an iterative timing detection of multiPath components for coherent Rake combing (Path search) and channel estimation method in multi-carrier/DS-CDMA (MC/DS-CDMA) broadband packet wireless access, such as 20 Mbps packet transmission over a 100 MHz bandwidth, including single-carrier/DS-CDMA (SC/DS-CDMA). In the proposed method, while the initial Path search and channel estimation are calculated using only time-multiplexed pilot symbols at the beginning of a packet, their results are refined by repeating the Path search and channel estimation using both pilot and decision-Directed data symbols. Computer simulation results demonstrate that the measured required average received E/sub b//N/sub 0/ for achieving the average packet error rate (PER)=10/sup -2/ can be improved by approximately 1.2, 1.3, 2.0, and 2.1 dB for the number of sub-carriers N/sub c/=1(SC/DS-CDMA), 4, 8, and 16, respectively, in an equal level 24-Path Rayleigh fading channel, when the number of pilot symbols is 64 and the number of iterations is 1.
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iterative decision Directed Path search and channel estimation for multi carrier ds cdma broadband packet wireless access
Vehicular Technology Conference, 2000Co-Authors: H. Aturashi, S. Abeta, M. Sawahashi, F. AdachiAbstract:This paper proposes an iterative timing detection of multiPath components for coherent Rake combing (Path search) and channel estimation method in multi-carrier/DS-CDMA (MC/DS-CDMA) broadband packet wireless access, such as 20 Mbps packet transmission over a 100 MHz bandwidth, including single-carrier/DS-CDMA (SC/DS-CDMA). In the proposed method, while the initial Path search and channel estimation are calculated using only time-multiplexed pilot symbols at the beginning of a packet, their results are refined by repeating the Path search and channel estimation using both pilot and decision-Directed data symbols. Computer simulation results demonstrate that the measured required average received E/sub b//N/sub 0/ for achieving the average packet error rate (PER)=10/sup -2/ can be improved by approximately 1.2, 1.3, 2.0, and 2.1 dB for the number of sub-carriers N/sub c/=1(SC/DS-CDMA), 4, 8, and 16, respectively, in an equal level 24-Path Rayleigh fading channel, when the number of pilot symbols is 64 and the number of iterations is 1.
Guanrong Chen - One of the best experts on this subject based on the ideXlab platform.
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Containment of Higher-Order Multi-Leader Multi-Agent Systems: A Dynamic Output Approach
IEEE Transactions on Automatic Control, 2016Co-Authors: Yu Zhao, Zhisheng Duan, Wenwu Yu, Guanrong ChenAbstract:This technical note addresses the distributed containment control problem for a linear multi-leader multi-agent system with a Directed communication topology. A new class of distributed observer-type containment protocols based only on the relative output measurements of the neighboring agents is proposed, removing the impractical assumption in some of the existing approaches that the observers embedded in the multiple dynamic agents have to share information with their neighbors. Under the mild assumption that, for each follower, there exists at least one leader having a Directed Path to that follower, some sufficient conditions are derived to guarantee the states of the followers to asymptotically converge to a convex hull formed by those of the dynamic leaders. Finally, some numerical simulations on containment of a multi-vehicle system are given to verify the effectiveness of the theoretical results.
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Distributed containment control of uncertain linear multi-agent systems
Proceedings of the 10th World Congress on Intelligent Control and Automation, 2012Co-Authors: Zhisheng Duan, Yu Zhao, Guanrong ChenAbstract:This paper studies the containment control problem for uncertain linear multi-agent systems where the agents have identical nominal dynamics but subject to different norm-bounded parameter uncertainties. A new kind of distributed control protocol based only on the relative states of neighboring agents is constructed for achieving containment. By using tools from nonsmooth analysis and algebraic theory, it is proved that the states of the followers will asymptotically converge to a convex hull formed by those of the leaders if for each follower there exists at least one leader that has a Directed Path to that follower. Finally, a simulation example is given to verify the effectiveness of the theoretical results.
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Consensus tracking of nonlinear multi-agent systems with switching Directed topologies
2012 12th International Conference on Control Automation Robotics & Vision (ICARCV), 2012Co-Authors: Zhisheng Duan, Zhongkui Li, Guanrong ChenAbstract:This paper addresses the distributed consensus tracking problem for a class of multi-agent systems with Lipschitz-type node dynamics in the presence of a single leader. The main contribution in the present work is to solve the consensus tracking problem without the over-idealized assumption that the communication topology among dynamic agents is strongly connected and fixed. A distributed protocol based only on the relative states between neighboring agents is designed. Then, by using tools from nonnegative matrix analysis and switching systems theory, it is theoretically shown that consensus tracking in a closed-loop multi-agent network with a switching Directed topology can be achieved if there always exists a Directed Path from the leader to each follower, with the control parameters suitably selected.
