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Durisi, G., Morgenshtern, V. och Bölcskei, H. (2012) *On the Sensitivity of Continuous-Time Noncoherent Fading Channel Capacity*.

** BibTeX **

@article{

Durisi2012,

author={Durisi, Giuseppe and Morgenshtern, Veniamin I. and Bölcskei, Helmut},

title={On the Sensitivity of Continuous-Time Noncoherent Fading Channel Capacity},

journal={IEEE Transactions on Information Theory},

issn={0018-9448},

volume={58},

issue={10},

pages={6372-6391},

abstract={he noncoherent capacity of stationary discrete-time fading channels is known to be very sensitive to the fine details of the channel model. More specifically, the measure of the support of the fading-process power spectral density (PSD) determines if noncoherent capacity grows logarithmically in SNR or slower than logarithmically. Such a result is unsatisfactory from an engineer- ing point of view, as the support of the PSD cannot be determined through measurements. The aim of this paper is to assess whether, for general continuous-time Rayleigh-fading channels, this sensi- tivity has a noticeable impact on capacity at SNR values of prac- tical interest.
To this end, we consider the general class of band-limited continuous-time Rayleigh-fading channels that satisfy the wide- sense stationary uncorrelated-scattering (WSSUS) assumption and are, in addition, underspread. We show that, for all SNR values of practical interest, the noncoherent capacity of every channel in this class is close to the capacity of an AWGN channel with the same SNR and bandwidth, independently of the measure of the support of the scattering function (the two-dimensional channel PSD). Our result is based on a lower bound on noncoherent capacity, which is built on a discretization of the channel input-output relation induced by projecting onto Weyl-Heisenberg (WH) sets. This approach is interesting in its own right as it yields a mathematically tractable way of dealing with the mutual information between certain continuous-time random signals.},

year={2012},

keywords={Continuous-time, ergodic capacity, fading channels, underspread property, Weyl-Heisenberg sets, wide-sense stationary uncorrelated scattering},

}

** RefWorks **

RT Journal Article

SR Electronic

ID 164370

A1 Durisi, Giuseppe

A1 Morgenshtern, Veniamin I.

A1 Bölcskei, Helmut

T1 On the Sensitivity of Continuous-Time Noncoherent Fading Channel Capacity

YR 2012

JF IEEE Transactions on Information Theory

SN 0018-9448

VO 58

IS 10

SP 6372

OP 6391

AB he noncoherent capacity of stationary discrete-time fading channels is known to be very sensitive to the fine details of the channel model. More specifically, the measure of the support of the fading-process power spectral density (PSD) determines if noncoherent capacity grows logarithmically in SNR or slower than logarithmically. Such a result is unsatisfactory from an engineer- ing point of view, as the support of the PSD cannot be determined through measurements. The aim of this paper is to assess whether, for general continuous-time Rayleigh-fading channels, this sensi- tivity has a noticeable impact on capacity at SNR values of prac- tical interest.
To this end, we consider the general class of band-limited continuous-time Rayleigh-fading channels that satisfy the wide- sense stationary uncorrelated-scattering (WSSUS) assumption and are, in addition, underspread. We show that, for all SNR values of practical interest, the noncoherent capacity of every channel in this class is close to the capacity of an AWGN channel with the same SNR and bandwidth, independently of the measure of the support of the scattering function (the two-dimensional channel PSD). Our result is based on a lower bound on noncoherent capacity, which is built on a discretization of the channel input-output relation induced by projecting onto Weyl-Heisenberg (WH) sets. This approach is interesting in its own right as it yields a mathematically tractable way of dealing with the mutual information between certain continuous-time random signals.

LA eng

DO 10.1109/TIT.2012.2207089

LK http://dx.doi.org/10.1109/TIT.2012.2207089

LK http://publications.lib.chalmers.se/records/fulltext/164370/local_164370.pdf

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