báo cáo hóa học:" Sparse correlation matching-based spectrum sensing for open spectrum communications" potx

... appeared upon acceptance. Fully formatted PDF and full text (HTML) versions will be made available soon. Sparse correlation matching-based spectrum sensing for open spectrum communications EURASIP ... reproduction in any medium, provided the original work is properly cited. Sparse correlation matching-based spectrum sensing for open spectrum communications Eva...

Ngày tải lên: 21/06/2014, 17:20

... the sensing bases, which for a Fourier sensing basis relates to a spread of the original signal spectrum by the mo dulation (hence the name “spread spectrum ). The approach is also efficient 1 spectrum ... k, i  N, are of equal complex magnitude. For universal sensing bases, e.g., the Fourier transform or the Hadamard transform, we have |φ ki | = N −1/2 for all 1  k, i  N. I...

Ngày tải lên: 21/06/2014, 17:20

... sequences cross -correlation Another important aspect not yet considered is the perfor- mance of the cross -correlation function. All the simulations show that the cross -correlation behaviour for the PN-EB ... do not exist for this case (for n = 5 there is a single preferred pair). So, the secondary peaks of the autocorrelation are not expected to have low levels. All the simulations...

Ngày tải lên: 23/06/2014, 00:20

... Relative Duration Error since it is sensible for movements that lie outside of the allowed force corridor around the opti- mal force path. It is therefore not surprising that also the O utside ... too expensive and too comple x and therefore not suitable for home rehabilitation training. This is true for many other approaches as well [32-36]. We therefore aimed to develop an easy to use...

Ngày tải lên: 19/06/2014, 08:20

... R, x ∈ R N , where s Î (2, 2*), f(x, t) ≥ 0 for all (x, t) Î ℝ N × ℝ and f(x, t)=o(|t|) as |t| ® 0. (f 2 ) lim |t|→+∞ f (x, t)t | t | 2 =+ ∞ uniformly for x Î ℝ N . Qian Advances in Difference ... 2011:39 http://www.advancesindifferenceequations.com/content/2011/1/39 Page 3 of 6 REVIE W Open Access Infinitely many sign-changing solutions for a Schrödinger equation Aixia Qian Correspon...

Ngày tải lên: 20/06/2014, 22:20

... common array geo- metry for smart antenna systems and array signal pro- cessing. Beside great advantages, the ULA does not perform uniform for all angles in the spatial spectrum and cannot detect ... algo- rithms provide information about the system environment for an efficient beamforming or for providing location- based services such as emergency services [4-9]. Therefore, great l...

Ngày tải lên: 21/06/2014, 01:20

... 3(b),we illustrate this for a system with size L = 7. To obtain this data for each P-value, 5000 different systems were analyzed. As observable in Figure 3(b), the system is almost equally hard to solve for all ... parameter z can be locally varied, parameters A and B are 3 ×3 matrices, uniformly applied for all cells [6]. The reason for no local control of A and B seems to be more d...

Ngày tải lên: 21/06/2014, 22:20

... spacecraft platform, moving at uniform speed and constant altitude [1]. Common technique for SAR and ISAR imaging is based on the 2D Fourier transform (FT). This technique is appro- priate for imaging ... n   , (10) where Π(k) is window in the frequency domain. For fixed n  this form is the 1D SM for fixed-range cell. In similar manner, radar image based on the 1D SM for fixed cross...

Ngày tải lên: 22/06/2014, 19:20

... modulation formats may be adopted for their simplic- ity. However, in broadband applications strong colored noise sources can severely limit the performance of single-carrier systems and demand for ... improve the E b /N 0 per- formance of a conventional single-carrier PLC system by ap- proximately 1.5 dB for the LV optimal receiver limited by col- ored noise and 1.0 dB for the HV opt...

Ngày tải lên: 22/06/2014, 20:20

... acid 85%. The solution for the overlay contained 20% glycerol and 2% CA. Focus- ing started with 200 V for 15 minutes, followed by 300 V for 30 minutes and finally with 400 V for 60 minutes. After ... 8 (page number not for citation purposes) total of 10 μg of protein. Electrophoresis started with 200 V for 15 minutes, followed by 300 V for 30 minutes and finally 400 V for 12...

Ngày tải lên: 18/06/2014, 15:20