Báo cáo hóa học: " Research Article Smart Antenna UKM Testbed for Digital Beamforming System" potx

... based beamformer 4 ×1LIEH array antenna Figure 8: Constructed UKM testbed receiver system. Table 3: Specification of UKM testbed receiver. RF parameter Values Antenna 4 × 1 uniform linear array Antenna ... degrades the antenna pattern due to the mutual coupling. 4. Conclusion This design and development of UKM testbed, capable of performing digital beamforming that emplo...

Ngày tải lên: 21/06/2014, 22:20

... Communications and Networking Volume 2007, Article ID 51358, 11 pages doi:10.1155/2007/51358 Research Article Multiple -Antenna Interference Cancellation for WLAN with MAC Interference Avoidance ... that per- formance degradation for fixed δ = 0.1 in the synchronous case is small and may well be acceptable. The SBFA algorithm brings additional performance improvement of up to 5 dB...

Ngày tải lên: 22/06/2014, 19:20

... Advances in Signal Pr ocessing Volume 2011, Article ID 651960, 8 pages doi:10.1155/2011/651960 Research Ar ticle Raised Cosine Interpolator Filter for Digital Magnetic Recording Channel Hui-Feng ... cosine pulse for digital magnetic recording channel is investigated. Simulation r esults indicate that the raised cosine interpolator achieve the best performance in both MSE and error...

Ngày tải lên: 21/06/2014, 05:20

... Default antenna orientation. This evaluation is real- ized once, for a given model of sensor node and its antenna. As mentioned in Section 3.3, the best antenna orientation are found and fixed for ... Wireless Communications and Networking Volume 2010, Article ID 620307, 14 pages doi:10.1155/2010/620307 Research Article Development of a Testbed for Wireless Underg round Sens...

Ngày tải lên: 21/06/2014, 23:20

... when the number of RVs in the model is reduced. For the baseline model, there are 6 (for LOS) or 5 (for NLOS) RVs, that is, 5 (for LOS) or 4 (for NLOS) random LSPs and the random XPR. With SM-E, ... Wireless Communications and Networking Volume 2009, Article ID 195480, 13 pages doi:10.1155/2009/195480 Research Article Reduced Complexity Channel Models for IMT-Advanced Evaluation...

Ngày tải lên: 21/06/2014, 23:20

... values estimated for the required minimum operating frequencies. Two main clusters of points can be identified in the plot of Figure 7: the one for the QCIF and the one for the CIF for- mat. The former format ... (30 fps) for the QCIF and CIF image formats by using any fast or adaptive search algo- rithms, except the 4SS for CIF images (see Ta ble 3). More- over, the minimum throug...

Ngày tải lên: 22/06/2014, 19:20

... Journal on Advances in Signal Processing Volume 2007, Article ID 24106, 11 pages doi:10.1155/2007/24106 Research Article Compression at the Source for Digital Camcorders Nir Maor, 1 Arie Feuer, 1 and ... 26) A p,q = ⎧ ⎪ ⎪ ⎪ ⎪ ⎪ ⎪ ⎨ ⎪ ⎪ ⎪ ⎪ ⎪ ⎪ ⎩ e j(2π/(2L+1))qp , for p = 1, 2, , L, e j(2π/(2L+1))q(L−p) , for p = L +1,2, ,2L, q = 1, 2, ,2L (A. 27) B p,q = ⎧ ⎪ ⎪ ⎪ ⎪ ⎪ ⎪ ⎨ ⎪ ⎪ ⎪ ⎪...

Ngày tải lên: 22/06/2014, 19:20

... =∅; (4) for every n ∈ U P used n =  k∈S p n k ; if P used n = P n  U =  U + {n}; for every k ∈ S if p n k > 0,  S =  S + {k}; end for end if end for (5) U = U −  U; S = S −  S; (6) for ... performance of 3000 ft lines on the high-frequency band. Therefore, for 1500 ft lines, allocating all the remain- ing power over the high-frequency band is a smart strategy to enhanc...

Ngày tải lên: 22/06/2014, 20:20

... systems Storage facility Financial institution Basic commercial vehicle Basic vehicle Payment Payment request Route request Route information Transit schedules Transit requests Vehicle status Traffic Incident notification Incident notification Route information Route information Priority request Figure 1: Article ... Wireless Communications and Networking Volume 2009, Article ID 267283, 1...

Ngày tải lên: 23/06/2014, 00:20

... sensitivity. Figure 9(b) shows the performance for each beamformer of the multiple MVDR beamforming method. The array responses at the two jammers’ directions for the four beamformers are −45 and −48 dB, ... interference cancellation performance upon convergence with adaptive single MVDR beamforming method. Figure 3(b) depicts the performances of all beamformers of the multiple MVDR...

Ngày tải lên: 21/06/2014, 22:20