Báo cáo hóa học: "Research Article Antenna Selection for MIMO Systems with Closely Spaced Antennas" ppt

... Communications and Networking Volume 2009, Article ID 739828, 11 pages doi:10.1155/2009/739828 Research Article Antenna Selection for MIMO Systems with Closely Spaced Antennas Yang Yang, 1 Rick S. Blum, 1 and ... importance of modeling the mutual coupling for antenna selection for closely- spaced arrays,” in Proceedings of IEEE Conference on Information Sciences...

Ngày tải lên: 21/06/2014, 22:20

... studied for the fourth-order problem by several authors 2, 3, 7, 8, 13, 14. However, all of these authors consider only an equation of the form u iv  t   f  t, u  t  , 1.4 with diverse ... Publishing Corporation Boundary Value Problems Volume 2009, Article ID 393259, 9 pages doi:10.1155/2009/393259 Research Article Positive Solutions for Some Beam Equation Boundary Valu...

Ngày tải lên: 21/06/2014, 20:20

... rate as the performance metric for both SU and MU -MIMO systems. The base station transmits to a single user (U = 1) for the SU -MIMO system and to N t users (U = N t ) for the MU -MIMO system. The ... error, as did in [44, 45] for the single -antenna opportunistic scheduling system and in [46] for the multiple -antenna opportunistic beamforming system. Combined with user s...

Ngày tải lên: 21/06/2014, 20:20

... performance for the MIMO systems with a sma ll number of antennas. In the sys- tems with a large number of antennas, we can achieve even higher complexity reduction without significant performance ... AF Molisch, MZ Win, MIMO systems with antenna selection. IEEE Microwave. 5(1):46–56 (2004). doi:10.1109/MMW.2004.1284943 4. S Sanayei, A Nosratinia, Antenna selection in...

Ngày tải lên: 21/06/2014, 03:20

... economical systems, and they may cause instability and poor performance of practical systems. Therefore, the stability analysis for neural networks with time-delay has attracted a large amount of research interest, ... Stability is a basic knowledge for dynamical systems and is useful to the real-life systems. The time delays happen frequently in various engineering, biological, an...

Ngày tải lên: 21/06/2014, 05:20

... denotes the a 3 parameter for the component with amplitude 2, and after this component is subtracted from the original signal, the other peak for the a 3 parameter for the component with amplitude 1.5 ... Processing Volume 2011, Article ID 425203, 9 pages doi:10.1155/2011/425203 Research Article ISAR Imaging of Ship Target with Complex Motion Based on New Approach of Parameter...

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... graphs for agraphof4verticeswithdifferent edges can be obtained from (15); that is, it has one nonisomorphic graph with zero edge, one nonisomorphic graph with one edge, two noniso- morphic graphs with ... of the cycle index Z,thatis, g p ( x ) = Z  S (2) p ,1+x  . (11) For example, a cycle index formula for pair groups (S (2) )with 4 vertices is given by [13] Z  S (2) 4  = 1...

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... interval without EGTS (successful in CAP). (b) Emergency alarm occurs within superframe interval without EGTS (successful in EGTS). every node by coordinator. We form a group of superframes without ... cannot perform CCA in a favorable way. Therefore within the CAP part of HBC-MAC, we applied slotted ALOHA scheme without carrier sensing. Because HBC does not have CS capability, the only way...

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... ime. 3. TR -MIMO- UWB with Space-Time Precoding 3.1. System Description. A TR -MIMO- UWB communica- tion system includes a transmitter equipped with N t antennas and a receiver equipped with N r antennas. ... is not in common with ordinary MIMO systems. It is shown in Figure 3 that the performance of the proposed scheme with N t = 2, N r = 2 and that with N t = 2, N r = 4 are u...

Ngày tải lên: 21/06/2014, 05:20

... Corporation Boundary Value Problems Volume 2011, Article ID 736093, 11 pages doi:10.1155/2011/736093 Research Article Three Solutions for Forced Duffing-Type Equations with Damping Term Yongkun Li and Tianwei ... “On the existence of solutions for impulsive Duffing dynamic equations on time scales with Dirichlet boundary conditions,” Abstract and Applied Analysis, vol. 2010, Article...

Ngày tải lên: 21/06/2014, 05:20