Báo cáo hóa học: " Research Article An Evaluation of Interference Mitigation Schemes for HAPS Systems" ppt

... beamforming can provide an efficient means of interference mitigation. Figure 10 shows an example of a HUT system with an adaptive beamforming device. The system consists of receiving and transmitting ... Wireless Communications and Networking Volume 2008, Article ID 865393, 11 pages doi:10.1155/2008/865393 Research Article An Evaluation of Interference Mitigation...

Ngày tải lên: 21/06/2014, 23:20

... analysis for superresolution is available. In [18], an analytical analysis of superresolution is performed assum- ing that the point spread function (PSF) of the sys- tem and intensity distribution of ... known and shift-invariant. However, in many cases, the PSF is un- known and shift-variant. In such blind deblurring problem, Manoj Kumar Singh et al. 3 An approximate solution o...

Ngày tải lên: 22/06/2014, 00:20

... use of instantaneous channel state information (CSI) at every frame [20]. Moreover, it can suffer from so-called channel mismatch problem due to the time delay for the exchange of instantaneous ... A, respectively; A T and A ∗ , respectively, indicate the transpose and conjugate transpose of A; a denotes the Euclidean norm of a;tr(A)anddet(A), respectively, denote the trace and the...

Ngày tải lên: 21/06/2014, 17:20

... domain and the signal to noise ratio (SNR). Though the system can be designed for fixed SNR and channel frequency autocorrelation matrix, the performance of the OFDM system will degrade significantly ... Fourier Transform (IFFT), mitigation of intersym- bol interference (ISI) by inserting cyclic prefix (CP), and robustness to frequency selective fading channel. Channel estimation plays...

Ngày tải lên: 21/06/2014, 22:20

... convergence theorem for finding an element of FS. On the other hand, Ceng et al. 8 proposed an iterative scheme for finding an element of EPφ ∩ FS and then obtained some weak and strong convergence ... Journal of Mathematical Analysis and Applications, vol. 331, no. 1, pp. 506–515, 2007. 5 A. Tada and W. Takahashi, “Weak and strong convergence theorems for a nonexpan...

Ngày tải lên: 21/06/2014, 05:20

... Transmission Delay. The transmission delay is the sum of the fixed time from the grant time of the tagged i-packet to the start of transmission of the i-packets in the next frame and the transmission ... Hence, our analytical model can be applied to model and analyze the delay of the uplink nrtPS traffic in IEEE 802.16-based network. Based on the numerical examples for the performanc...

Ngày tải lên: 21/06/2014, 05:20

... more variant than when the number of receivers is 10–15. For example, for N = 3andμ = 0.984, the ratio of standard deviation to mean delay is around 3.225/0.8183  4, whereas for N = 15 and μ = ... “grace- fully” and meet the delay performance benchmark of single- receiver automatic repeat request (ARQ) schemes. There is yet another set of applications for which partial deco...

Ngày tải lên: 21/06/2014, 18:20

... selection of the evaluation techniques and tools is the first and foremost step in the performance evaluation process. This phase includes considering the requirements of the performance analysis and ... Figure 7.The PePerformance is applied for a processing resource, MemPer- formance for a memory resource, and CommPerformance for a communication resource, respectively. The perfo...

Ngày tải lên: 21/06/2014, 20:20

... Chair Professor, Mathematics and Statistics Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia 4 Department of Mathematics, National University of Ireland, Galway, ... Problems Volume 2009, Article ID 103867, 34 pages doi:10.1155/2009/103867 Research Article An Approximation Approach to Eigenvalue Intervals for Singular Boundary Value Probl...

Ngày tải lên: 21/06/2014, 20:20

... Communications and Networking Volume 2008, Article ID 348626, 9 pages doi:10.1155/2008/348626 Research Article Performance Evaluation of WiMAX Broadband from High Altitude Platform Cellular System and Terrestrial Coexistence ... the HAP antennas. 2.2. HAP antenna and user antenna patterns An antenna radiation pattern is an important and critical design factor in determining the...

Ngày tải lên: 21/06/2014, 23:20