báo cáo hóa học:" Research Article Robust THP Transceiver Designs for Multiuser MIMO Downlink with Imperfect CSIT" doc

... consider robust THP transceiver designs for multiuser MIMO downlink in the presence of imperfect CSIT. We consider two widely used models for the CSIT error [21], and propose robust THP transceiver designs suitable ... [29–31]. Robust linear precoder designs for MISO downlink with SINR con- straints are described in [32]. Here, we address the problem of...

Ngày tải lên: 21/06/2014, 20:20

... diagram of a MU -MIMO downlink. Consider a Gaussian MIMO broadcast channel where the base station is equipped with M antennas, and there are K homogeneous users each equipped with N antennas. EURASIP ... compared to limited feedback MIMO- downlink techniques using transmit beam matching (TBM) [17], which is a modified version of PU 2 RC for multiple antenna users, zero-forcing be...

Ngày tải lên: 21/06/2014, 17:20

... Networking Volume 2011, Article ID 570680, 11 pages doi:10.1155/2011/570680 Research Ar ticle Carrier Frequency Offset Estimation for Multiuser MIMO OFDM Uplink Using CAZAC Sequences: Performance and S ... to evaluate the performance of the CFO estimation using CAZAC sequences. We first compare the performance using CAZAC sequences with the performance using two other sequences wi...

Ngày tải lên: 21/06/2014, 05:20

... employed for fat channel matrices and has a near optimal performance with a reasonably low complexity, especially for a low-order modulation. To apply MIMO detectors to underdertermined MIMO systems, ... based MIMO (PVC -MIMO) detection approach is proposed. (This work is an extension of [34]. In [34], the PVC -MIMO is considered with the LR-based subdetectors. In this paper, w...

Ngày tải lên: 21/06/2014, 11:20

... Corporation Fixed Point Theory and Applications Volume 2010, Article ID 120646, 7 pages doi:10.1155/2010/120646 Research Article Existence and Localization Results for px-Laplacian via Topological Methods B. ... s    ≤ a  x   C | s | qx/q  x for a.e.x∈ Ω and all s ∈ R, 1.1 with C  const.>0, 1/qx1/q  x1 for a.e. x ∈ Ω,anda ∈ L q  x Ω, ax ≥ 0 for...

Ngày tải lên: 21/06/2014, 17:20

... -semiconvex function with respect to X for any  ≥ 0 see 1, 3, 12.When  0, this concept coincides with the semiconvexity defined by Mifflin 24. Fixed Point Theory and Applications 11 for all t ∈ ... Theory and Applications Volume 2011, Article ID 175327, 13 pages doi:10.1155/2011/175327 Research Article ε-Optimal Solutions in Nonconvex Semi-Infinite Programs with Support...

Ngày tải lên: 21/06/2014, 20:20

... Communications and Networking Volume 2007, Article ID 60408, 6 pages doi:10.1155/2007/60408 Research Article Performance of Selection Combining Diversity in Weibull Fading with Cochannel Interference Mahmoud ... bandwidth with the desired user (assumed to be the 0th). Binary phase- shift keying (BPSK) with raised cosine pulse shaping is as- sumed for all the signals and all the...

Ngày tải lên: 22/06/2014, 19:20

... Corporation Advances in Difference Equations Volume 2007, Article ID 40160, 17 pages doi:10.1155/2007/40160 Research Article Necessary Conditions of Optimality for Second-Order Nonlinear Impulsive Differential ... controls for the systems governed by the second-order nonlinear impulsive differential equations. By reducing wave equation to the customary vector form, Fattorini obtained...

Ngày tải lên: 22/06/2014, 19:20

... Value Problems Volume 2007, Article ID 47218, 12 pages doi:10.1155/2007/47218 Research Article Existence and Multiplicity Results for Degenerate Elliptic Equations with Dependence on the Gradient Leonelo ... ∂Ω 0 for all n or x n ∈ Ω\∂Ω 0 for all n. Case 1 (x n ∈ ∂Ω 0 for all n). In this case, x n = z n .For sufficiently small but fixed take x n = z n − εν n . Then we have the...

Ngày tải lên: 22/06/2014, 19:20

... publications con- cerned with abstract stability investigations, unfortunately, the space C 0 :={φ ∈ C((−∞, 0];E):lim θ→−∞ φ(θ) = 0} is not a uniform fading memory space. In [4] for instance, some ... s)B λ F  x s (·,φ)  ds,fort ≥ 0, φ(t), for t ∈ (−∞,0], (2.3) where B λ = λR(λ,A T ). Hassane Bouzahir 5 Set ᐄ : =  ϕ ∈ Ꮾ : ϕ(0) ∈ D  A T  . (2.4) Define ᐁ(t)onᐄ for t ≥ 0by ᐁ(t)ϕ =...

Ngày tải lên: 22/06/2014, 22:20