mobile radio propagation prediction for two different districts in mosul city

... also operate in the VHF and UHF bands, for example, television, domestic radio, Citizens' Band radio, marine radio, aeromobile radio (including instrument landing systems) and military radio Several ... required to underpin propagation models They include terrain height information, land usage data, building shape and height information, and vegetation data For determining building penetration ... stations and mobiles can generate the necessary RF power while remaining fairly small in physical size For two- way mobile radio, particularly in urban areas, it is seldom that the mobile antenna...

Ngày tải lên: 28/10/2013, 11:15

... terrain, Propagation over Irregular Terrain 33 others in built-up areas, etc None of the simple equations derived in Chapter are suitable in unmodi®ed form for predicting average signal strength in ... obtain trapping or ducting, the rays must propagate in a nearly horizontal direction, so to satisfy 30 Figure 2.8 The Mobile Radio Propagation Channel The phenomenon of ducting conditions for ... quite interesting di€erences For horizontal polarisation the relative phase of the incident and re¯ected waves is nearly 1808 for all angles of incidence For very small values of c (near-grazing incidence),...

Ngày tải lên: 07/11/2013, 03:15

... a single quinol-binding site However, the technique used to determine binding sites of quinols, inhibition by HOQNO (a structural analogue of menaquinone), did not allow them to see the binding ... the binding site of the menaquinols, but for technical reasons it cannot reveal the site for the ubiquinols, because HOQNO does not inhibit binding of the ubiquinols Fig Variation of reducing ... suggesting the existence of two menadiol binding sites in the enzyme, one with higher affinity than the other, as well as inhibition data indicating the possibility of more than one menaquinol binding...

Ngày tải lên: 07/03/2014, 15:20

... some kind of diffuse scattering into RT models For example, in [54], a simple diffuse scattering model has been inserted into a 3D RT method; RT augmented by diffuse scattering was seen to be in better ... significant even in macrocells [66]) For picocells, propagation within a single large room is mainly determined by LoS propagation and single-bounce reflections However, if the Tx and Rx are in different ... coefficient Finally, a further extension accounting for polarization is detailed in [89] KEY FEATURES NOT INCLUDED IN PRESENT MODELS As described in the foregoing sections, significant advances in the...

Ngày tải lên: 22/06/2014, 22:20

... appear less than times, the remaining features were ranked by information gain using the MALLET toolkit1 Table lists the word pairs with highest information gain for the Contrast vs Other and ... a different distribution of relation types in the beginning versus further in the middle of a paragraph We capture paragraphposition information using a feature which indicates if Arg1 begins ... helpful for identifying Com- Classification Results For all experiments, we used sections 2-20 of the PDTB for training and sections 21-22 for testing Sections 0-1 were used as a development set for...

Ngày tải lên: 30/03/2014, 23:20

... presented in Section 2.2, the case n = m + is the least favorable so that the difference in computing time for the two methods becomes evident even in small samples For n = m = 40, the computing time for ... are shown For each test, the computing time increases as a power of the sample size However, the difference in the corresponding exponents leads to a significant difference in the computing time ... on Bioinformatics and Systems Biology Table 1: CPU time used for finding the distribution function for W1 and its L2 -counterpart W2 under the null hypothesis H0 The CPU time was measured in units...

Ngày tải lên: 22/06/2014, 22:20

... reviewing the official system for evaluating government effectiveness in Baoji City, I construct my own indicators for assessing the effectiveness of two district governments of Jintai and Weibin In ... helps to force the question ‘whose value for money is being considered?’ Value for money will mean different things for different individuals Often these different perspectives will come into conflict ... on city governance performance In the Chinese context, transforming and redefining government functions in the new reform era have been widely treated as the most important step towards improving...

Ngày tải lên: 05/10/2015, 19:06

... weight in the period of the study was 10.2% considering all live newborns in the period in the denominator (8442) [17,22] Data on 1720 newborns included in the study were obtained in LBC and information ... per year in the city, revealed a rate of 0.7% for this population, that is, infant deaths per 1000 births The low value obtained in this study for the Apgar score at minutes, mostly in the LBW ... structuring health services regarding an adequate follow-up of these children after birth; increasing the number of openings and improving resources in Neonatal Intensive Care Units; providing ward...

Ngày tải lên: 21/06/2014, 19:20

... 75 Flooring, ceramic floor tile, 400 Â 400 mm Reinforced foundation, reinforcement diameter 10 mm Reinforced foundation, reinforcement diameter 18 mm Reinforced columns, reinforced cylinder diameter ... 75 Flooring, ceramic floor tile 400 Â 400 mm Reinforced foundation, reinforcement diameter 10 mm Reinforced foundation, reinforcement diameter 18 mm Reinforced columns, reinforced cylinder diameter ... height 4m Reinforced columns, reinforced cylinder diameter 18 mm, height m Reinforcement steel floor beams, bracing rebar diameter 10 mm, height m Reinforcement steel floor beams, bracing rebar diameter...

Ngày tải lên: 13/08/2015, 10:01

... Reinforcement learning using WINTER algorithm in walking scenario: (a) initial prediction window size is set to 0.08 and the future testing window size is set to 0.12; (b) initial prediction window ... given a prediction scheme the prediction accuracy only relies on the window size Reinforcement Learning We next examine the effects of reinforcement learning on prediction accuracy using WINTER ... of the time windows consists of two operations: expanding, that is, increasing the window size by one time point, and shrinking, that is, decreasing the window size by one time point The collector...

Ngày tải lên: 21/06/2014, 18:20

... on a constrained zero-forcing criterion The performance was assessed for either of the diversity and beamforming scenarios and compared against one of conventional receivers Downlink Preequalization ... of group His main interests lie in signal processing techniques for digital communications and communication protocols Within this research line, he has done work for optical and mobile communications, ... the same criterion, zero forcing, in both preequalization schemes The use of preequalization algorithms has two main advantages: reducing the MAI at MTs by preformatting the signal so that the...

Ngày tải lên: 23/06/2014, 00:20

... before being converted into frequency domain subband samples For D = K, we have a critical sampling SBAA, and for D < K, we have an oversampling SBAA In our approach, we use the critical sampling ... such as multipath fading in mobile radio systems, tropospheric and ionospheric scintillation, and rain attenuation His recent interests are in frontier regions bridging “wave propagation and “digital ... containing independent and identically distributed (i.i.d) noise in each element For a linear uniformly spaced array, a(θi,p ) is given by x(n) = i=0 p=0 (n) si,p + n(n) (9) In order to perform...

Ngày tải lên: 23/06/2014, 01:20

... downloading information, exchanging email, and instant messaging) Y Park and F Adachi (eds.), Enhanced Radio Access Technologies for Next Generation Mobile Communication, 1–37 © 2007 Springer 2 ... switching (dialing) and handover of the call built into the standard from the beginning Additionally, the NMT standard specified billing as well as national and international roaming In 1979 NTT introduced ... for developing the networks were different for different parts of the world Hence, it was decided to have a network that provides services independent of the technology platform and whose network...

Ngày tải lên: 27/06/2014, 09:20

... Efficiency in Cellular Land Mobile Radio Systems 2.1 INTRODUCTION Spectral efficiency in Cellular Land Mobile Radio Systems Introduction In order to assess the efficiency of spectral usage in cellular ... relatively cheap radio equipment which has led to the rapid expansion in the use of land mobile radio systems Land mobile radio systems are now becoming so popular, for both business and domestic ... system is inevitable for any land mobile radio service to survive ever increasing public demands, particularly considering the severe spectrum congestion which is already occurring within many...

Ngày tải lên: 03/07/2014, 21:45

Ngày tải lên: 04/07/2014, 03:55

... downloading information, exchanging email, and instant messaging) Y Park and F Adachi (eds.), Enhanced Radio Access Technologies for Next Generation Mobile Communication, 1–37 © 2007 Springer 2 ... switching (dialing) and handover of the call built into the standard from the beginning Additionally, the NMT standard specified billing as well as national and international roaming In 1979 NTT introduced ... for developing the networks were different for different parts of the world Hence, it was decided to have a network that provides services independent of the technology platform and whose network...

Ngày tải lên: 07/08/2014, 21:20

... personalized and mobile TV broadcasting service Mobile digital broadcast TV combines the two best-selling consumer products in history—TVs and mobile phones Mobile digital TV (DTV) is already becoming a ... #1 Frame time uplink channel downlink channel uplink channel downlink channel Figure Structure of uplink and downlink channels in a TDMA TDD system In FDD the uplink and downlink sub-bands are ... most appropriate for signal reception in a mobile environment This can also guard against multiple channel interferences that cause reductions in signal receiving quality within the mobile environment...

Ngày tải lên: 07/08/2014, 21:20

... networks will sooner or later be insufficient to cope with the increasing demands for broadband services, which is now in full force in fixed networks Demands for downloading of ever increasing ... and information from the link power budget that is transmitted during initial synchronization, the downlink path loss is estimated Assuming a similar path loss for the uplink, the MS uses this information ... very rapid pace In line with the recent explosive expansion of Internet traffic in the fixed networks, demands for broad ranges of services are becoming stronger even in wireless networks People...

Ngày tải lên: 07/08/2014, 21:20

... channel gain and the noise component after performing FDE, respectively As the FDE weight, 90 CHAPTER maximal ratio combining (MRC), zero forcing (ZF), equal gain combining (EGC) and minimum mean ... suppressing the downlink MAI and therefore improve the downlink BER performance as discussed in Section However, in the uplink (mobile- to-base) transmission, different users’ signals go through different ... encoding of Table can be replaced by equivalent time-domain STTD encoding of Table Equivalent time-domain STTD encoding is illustrated in Table Frequency-domain STTD encoding for Nt = Time (in...

Ngày tải lên: 07/08/2014, 21:20