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A deterministic tool for multipath propagation modelling
IEEE Antennas and Propagation Society Symposium, 2004., 2004Mobile communications are influenced by multipath effects. Radio wave propagation over urban and natural terrain depends on topography and morphography. A simulation tool, URBES (urban ray beam electromagnetic simulator), is presented. It is based on astigmatic beam tracing (ABT), a deterministic method which combines ray and beam tracing.
DI GIAMPAOLO, EMIDIO, BARDATI F.
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Introduction to multipath propagation
2012Multipath propagation produces different versions of the transmitted signal which combine in the receiver. Multiple paths can be produced by reflection or scattering from the ground or objects such as buildings, inhomogeneity of atmospheric refractivity or multiple ray paths through the ionosphere.
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The Multipath Propagation Problem
1997The properties and principles outlined so far in respect of cellular radio would appear to show that a roaming radiotelephone system can be set up quite specifically. Radio coverage in a cell can be well defined; co-channel interference from adjacent cells can likewise be defined; analog voice with FM operates in an assured manner; signalling over the ...
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Indoor Multipath Propagation Characteristic at 60GHz
TENCON 2006 - 2006 IEEE Region 10 Conference, 2006Delay profiles of indoor multipath environment at 60 GHz were measured. Packets included preamble with two msequences were used for measurement. Time-delay resolution of delay profiles was 1 ns. The measurement results showed that multipath delayed waves at 60 GHz were separable.
Tran Hao Ngoc +6 more
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Multipath Propagation Effects of UWB Radars
2006 International Conference on Microwaves, Radar & Wireless Communications, 2006The propagation of ultra wide band (UWB) signals is analyzed. The UWB radar output signals are formed both with transmitter and antenna. Moreover, they can be substantially affected due to electromagnetic wave propagation through walls and multipath effects. Multipath effects are analyzed and simulated numerically for various cases with several heights
Vladimir Schejbal +4 more
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Multipath propagation and the optimal SNR for adaptive arrays
ICASSP-88., International Conference on Acoustics, Speech, and Signal Processing, 2003The author investigates the optimal output SNR (signal-to-noise ratio) for adaptive arrays. His main interest is what happens in the case of coherent multipath propagation. He casts the multipath into a statistical framework and derives an approximation of the average optimal SNR.
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Proceedings of ISSSTA'95 International Symposium on Spread Spectrum Techniques and Applications, 2002
For precise GPS kinematic positioning one major source of error is the multipath signal propagation. Therefore, it is very important to get more information about the possible multipath signals in a complex scenario. With a simulation it is possible to predict a multipath signal propagation and the corresponding error in the code and carrier beat phase.
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For precise GPS kinematic positioning one major source of error is the multipath signal propagation. Therefore, it is very important to get more information about the possible multipath signals in a complex scenario. With a simulation it is possible to predict a multipath signal propagation and the corresponding error in the code and carrier beat phase.
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Polarization sensitive multipath propagation modeling
2013 IX Internatioal Conference on Antenna Theory and Techniques, 2013The polarization structure research of the receiving antenna excited by arbitrary field is carried out. The necessary ratios, characterizing the optimal polarization antenna's structure are determined by the criteria of maximal and minimal received signal's power. An advantage of received power is estimated for an optimal polarization.
Protsenko, Mikhail B. +3 more
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Multipath propagation in mobile communications
2003When a receiver is moving in a complicated, multipath environment, it is continuously receiving new contributions with changes in delay, amplitude and polarisation. The problem of exactly analysing the multipath problem is a formidable task, but is usually one without interest.
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Wireless System with Multipath Propagation
2018In particular, for broadband applications, where the signal bandwidth is a noticeable fraction of the carrier frequency and where sophisticated modulation and detection methods have to be used, the receiver does not only require a sufficient mean power but also a reasonable approximation of the impulse response \(w_{e}(t,s)\) or delay spread function \(
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