Báo cáo hóa học: " Indoor localization based on cellular telephony RSSI fingerprints containing very large numbers of carriers" potx

... machines. Contem Math, 443: 7–19 (2007) doi:10.1186/1687-1499-2011-81 Cite this article as: Oussar et al.: Indoor localization based on cellular telephony RSSI fingerprints containing very large numbers ... Journal on Wireless Communications and Networking 2011, 2011:81 http://jwcn.eurasipjournals.com/content/2011/1/81 Page 3 of 14 RESEARCH Open Access Indoor lo...

Ngày tải lên: 21/06/2014, 00:20

... presence of synchronization errors. Keywords: ultra-wideband (UWB); energy detection; cross-modulation interference; synchronization error. 1 be increased by increasing the difference of the orders of ... 11. Comparisons of BER performance of GFSK and PPM in the presence of synchronization errors (CM4 model, δ = D = 80 ns, ε = 0 and 2 ns). Figure 12. Comparisons of BER performanc...

Ngày tải lên: 20/06/2014, 04:20

... multipath chan- nels and nonline -of- sight (NLOS) situations has made the task of indoor localization very challenging as com- pared to outdoor environments. Conventionally, the positioning problem is ... location estimator. Keywords: indoor positioning, maximum likelihood (ML), time -of- arrival (TOA), direct location estimation 1 Introduction With the emergence of location -bas...

Ngày tải lên: 20/06/2014, 21:20

... 2011:169 http://jwcn.eurasipjournals.com/content/2011/1/169 Page 9 of 10 Figure 2 Demonstration of the progre ssive optimizat ion on relay selection, subcarrier and power allocation. Phase 1 is the joint relay selection and subcarrier allocation based on ... steps of the game -based power allocation scheme. Figure 3 Demonstration of the simulation results of users’ sum rate v...

Ngày tải lên: 20/06/2014, 22:20

... Amiri, Rotation invariant retina identification based on the sketch of vessels using angular partitioning, in Proceedings International Multiconference on Computer Science and Information Technology ... identification method based on retinal images. The proposed system composed of two main parts, feature extraction component and decision-making component. In feature extraction c...

Ngày tải lên: 20/06/2014, 22:20

... because of a three-photon pro- cess, involving simultaneous absorption of two control photons and emission of a photon at frequency ω c - ω n . The middle dashed lines in Figure 2a corresponds to ... detections based on very high fre- quency NRs because of the generated heat ef fect [24]. For optical det ection, as device dimensions are scaled far below the detection wavelength,...

Ngày tải lên: 20/06/2014, 22:20

... pre- pared. The first one was an aqueous solution of Pd (NH 3 ) 4 Cl 2 , the second was an aqueous solution of hydrazine. Equal volumes of these solutions were mixed leading to the reduction of Pd(NH 3 ) 4 Cl 2 by ... mixture on the current of the diode which was reverse biased with the voltage of 0.5 V. Table 1 Summary of the deposition conditions and electrical characteristi...

Ngày tải lên: 21/06/2014, 03:20

... 2: Determination of the t hreshold in quiet (absolute threshold) Step 3: Finding the tonal and nontonal components of the audio Step 4: Decimation of tonal and nontonal masking components Step ... in a header of the audio; (v) the watermark is robust to resist common signal- processing manipulations such as fi ltering, compres- sion, filtering with compression, and so on. Section 2 in...

Ngày tải lên: 23/06/2014, 01:20

... posture durations. This is because longer posture duration implies that a connected link remains connected for longer duration and also a disconnected link remains disconnected longer. As a result, ... situations for which the arbitrarily chosen slot is a part of one of the T on periods (except the last slot on the T on period) or the last slot during one of the T off periods. With...

Ngày tải lên: 21/06/2014, 11:20

... disorder-induced localization of the charge carriers and enhanced electron–electron interaction-induced localization could be possible reasons to degrade the metallic behavior of nanowires/tubes ... nm) of the PEDOT nanowire is equal or close to the localization length of electrons Lc(Lc * 20 nm for conducting polymers close to the metal–insulator transition [31]); therefore, l...

Ngày tải lên: 22/06/2014, 00:20