Báo cáo hóa học: " Research Article Joint Estimation of Mutual Coupling, Element Factor, and Phase Center in Antenna Arrays" pdf

... treating the radiation pattern and the array phase center as unknowns during the coupling estimation. We obtain a robust and ver- satile joint method for estimation of the coupling matrix, the element ... for estimation of the mutual coupling matrix of an antenna array. The method extends previous work by incorporating an unknown phase center and the element...

Ngày tải lên: 22/06/2014, 19:20

... Renfors, and V. Koivunen, “Compensation of frequency-selective I/Q imbalances in wideband receivers: models and algorithms,” in Proceedings of the 3rd IEEE Work- shop on Signal Processing Advances in ... broad- band wireless access [2], digital video & audio broadcasting [3], and so forth. Hence, a lot of effort is spent in developing integrated, cost -and power-efficien...

Ngày tải lên: 22/06/2014, 19:20

... calculation and minimization of functions of the Log-Likelihood Ratios (LLR) of the syndrome elements obtained according to the parity check matrix of the error-correcting code. In the first part of this ... Annealing is the process of heating a solid and cooling it slowly in order to remove strain and crystal imperfections. During this process, the free energy of the s...

Ngày tải lên: 21/06/2014, 08:20

... observation proceeds. Jazwinski in [8] studied the problem of online estimation within continuous time models. In the context of a nonlinear model identification, the use of nonlinear filters such as ... according to both periodic and nonperiodic sampling schemes. For instance, the case of jitter sampling, as in [15], is considered in Section 3.2. The obtained performance is...

Ngày tải lên: 21/06/2014, 22:20

... Advances in Signal Processing Volume 2008, Article ID 840237, 9 pages doi:10.1155/2008/840237 Research Article Joint Effects of Synchronization Errors of OFDM Systems in Doubly-Selective Fading Channels Wen-Long ... Channels Wen-Long Chin 1 and Sau-Gee Chen (EURASIP Member) 2 1 Department of Engineering Science, National Cheng Kung University, Tainan 701, Taiwan 2 Departme...

Ngày tải lên: 21/06/2014, 22:20

... separated into two parts: soft information (including the systematic and extrinsic information since systematic information is not separable in space time coding scheme) and a priori information, which, ... of VLEC and STTC is described in Section 2. Joint source and space time decoding algorithm is discussed in Section 3 in detail. Performance in case of perfect chann...

Ngày tải lên: 21/06/2014, 23:20

... Advances in Signal Processing by the first terms in the Taylor series expansions. Using the trigonometric identity cos(α + β) = cosαcosβ − sinα sinβ and sin(α + β) = sin α·cosβ +cosα sin β,wehave e j2π(Δxcos(θ+  ϑ)cos(φ+ϕ)a+Δy ... Processing, vol. 83, no. 8, pp. 1789–1802, 2003. [5] G. Y. Zhang and T. Bin, Estimation of 2D-DOAs and angular spreads for coherently distributed sour...

Ngày tải lên: 22/06/2014, 01:20

... Key Project of Chinese Ministry of Education, the NSF of Jiangxi Province of China, the Youth Foundation of Jiangxi Provincial Education Department GJJ09456, and the Youth Foundation of Jiangxi ... Long and Hui-Sheng Ding College of Mathematics and Information Science, Jiangxi Normal University Nanchang, Jiangxi 330022, China Correspondence should be addressed to Hui-She...

Ngày tải lên: 21/06/2014, 05:20

... solutions of problem p 2 . Some of them are minimum points; others are mountain pass points. 2. Preliminaries Now we recall the notion of critical groups of an isolated critical point u of a C 1 functional ... Solutions of p-Laplacian with Neumann and Robin Boundary Conditions for Both Resonance and Oscillation Problem Jing Zhang and Xiaoping Xue Department of Mathematic...

Ngày tải lên: 21/06/2014, 07:20

... S. Mitrinovi ´ c, J. E. Pe ˇ cari ´ c, and A. M. Fink, Inequalities Involving Functions and Their Integrals and Derivatives, vol. 53, Kluwer Academic, Boston, Mass, USA, 1991. 4 Z. Xie and Z. ... Corporation Journal of Inequalities and Applications Volume 2010, Article ID 256796, 8 pages doi:10.1155/2010/256796 Research Article On a New Hilbert-Type Intergral Inequality wi...

Ngày tải lên: 21/06/2014, 07:20