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Quantum signal propagation in depolarizing channels
IEEE Transactions on Information Theory, 2002Summary: Let \(X\) be an unbiased random bit, let \(Y\) be a qubit whose mixed state depends on \(X\), and let the qubit \(Z\) be the result of passing \(Y\) through a depolarizing channel, which replaces \(Y\) with a completely random qubit with probability \(p\). We measure the quantum mutual information between \(X\) and \(Y\) by \(T(X; Y)=S(X)+S(Y)-
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Ultra-Wide-Band Propagation Channels
Proceedings of the IEEE, 2009Understanding ultra-wide-band (UWB) propagation channels is a prerequisite for UWB system design as well as communication-theoretic and information-theoretic investigations. This paper surveys the fundamental properties of UWB channels, pointing out the differences to conventional channels. If the relative bandwidth is large, the propagation processes,
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Characterising the radio propagation channel
IEE Colloquium on Antennas and Propagation for Future Mobile Communications, 1998Summary form only given. Optimising the designs of new cellular radio products requires a detailed understanding of the radio propagation characteristics of the transmission paths between mobiles or fixed subscriber terminals and base stations. The performance of a radio network in terms of coverage or capacity critically depends on factors such as ...
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Channel-warped impulse propagation functions
SPIE Proceedings, 2010This paper discusses some potential approaches to developing next-generation radar technologies via the development of smart hardware subsystems that have the intrinsic capability to compensate for channel warping and propagation distortions. Discussions with regard to typical categories of propagation distortions are provided along with a series of
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MIMO multidimensional propagation channel modeling
2006 Asia-Pacific Microwave Conference, 2006MIMO has a high flexibility for realizing reliable and/or high capacity communication systems utilizing various signal domains such as space, time , frequency and antenna polarization. For analyzing MIMO performance quantitatively, a multidimensional propagation channel model is inevitable.
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Radio Propagation and RF Channels
2018This chapter covers RF channel models including propagation and antenna. From modem point of view, all the components in RF, e.g., LO, LNA, and PA, are part of channel. However, this chapter covers antenna, propagation media, frequency-selective fading due to surrounding terrains and obstacles, and time-selective fading due to the movement of ...
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