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Virtual Oversampling of Sparse Channel Impulse Response
2019The paper presents the problem of determining the impulse response of a sparse channel, in which the propagation path delays are not restricted to the sampling grid of the signal converters. The OMP (Orthogonal Matching Pursuit) algorithm performs very well, if the nonzero channel impulse response coefficients are in synchrony with the sampling grid ...
Marcin Kucharczyk +4 more
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On choice of impulse response length in channel identification
2001 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (IEEE Cat. No.01CH37233), 2002A new approach to the problem of estimating length of a channel impulse response is presented. Unlike the information theoretic approaches, the new method examines the unmodeling effect explicitly and independent of the additive noise effect.
S. Beheshti, M.A. Dahleh
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Impulse response modeling of indoor radio propagation channels
IEEE Journal on Selected Areas in Communications, 1993If indoor radio propagation channels are modeled as linear filters, they can be characterized by reporting the parameters of their equivalent impulse response functions. The measurement and modeling of estimates for such functions in two different office buildings are reported. The resulting data base consists of 12000 impulse response estimates of the
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Complex impulse response modeling for wideband channels
VTC '98. 48th IEEE Vehicular Technology Conference. Pathway to Global Wireless Revolution (Cat. No.98CH36151), 2002The foundations of a wideband site-specific radio propagation channel model is presented. The model consists in a combination of a deterministic and statistical parts. The deterministic part generates the channel profile taking into account the influence of the propagation environment and the antenna configuration once they have a strong impact on the ...
P. Marques, J. Fernandes, J. Neves
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Calculation of impulse response in Rician and Rayleigh channel
2012 ELEKTRO, 2012In this paper the simulation of Rician and Rayleigh fading model and calculation of channel impulse response for these models are reported. Radio channels in radio systems are usually characterized as multipath fading channels. In environment between transmitter and receiver there exist two main signal propagation components, Line-of-Sight (LOS) and ...
Andrej Tkac +2 more
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Blind Synchronization of Channel Impulse Responses for Channel Reciprocity-based Key Generation
2019 IEEE 44th Conference on Local Computer Networks (LCN), 2019Local, blind synchronization of Channel Impulse Responses for key generation algorithms without leaking details to adversaries is challenging, due to noise from transmission and measurements. Extracting the channel characteristics as a common source of randomness using CIR promises notable improvements in key bit rates for Physical Layer Security ...
Paul Walther +2 more
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Impulse Response Model and Parameters for Indoor Channel Modeling at 60GHz
2010 IEEE 71st Vehicular Technology Conference, 2010In order to realize very high throughput wireless local area network (WLAN) systems, which demand multi Gbps capacities/bitrates, the IEEE802.11.TGad (Next generation WLAN standard at 60GHz band) is in the standardization process. To evaluate and select the proposed physical layer modulation and coding schemes in the standardization process, channel ...
Hirokazu Sawada +5 more
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The Averaged Impulse Response of a Shallow-Water Channel
The Journal of the Acoustical Society of America, 1971The averaged impulse response for sound transmission in a shallow-water channel is estimated by a theory based on ray acoustics with lossy specular reflection from the boundaries. Averaging is introduced primarily by strict averaging in depth of the square of the received pressure. Rays need be traced over but a single cycle of their paths. The impulse
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Spatio-temporal impulse responses in channel flow of viscoelastic fluids
2018 Annual American Control Conference (ACC), 2018The study of non-modal amplification of distributed body forces in channel flows of viscoelastic fluids has provided useful insight into the mechanisms that may govern the initial stages of transition to elastic turbulence. However, distributed body forces are not easy to implement in experiments and there is a need to examine amplification of ...
Gokul Hariharan +2 more
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Blind estimation of a complex channel impulse response
[1993 Proceedings] IEEE Signal Processing Workshop on Higher-Order Statistics, 2002Extends to complex channels and data an efficient technique for blind channel identification. The method, which is a variant of maximum likelihood estimation, approaches the Cramer-Rao bound for small (residual) distortion and large sample size, and is recommended as a final step of blind deconvolution. After an analysis for general probability density
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