Results 251 to 260 of about 4,616,003 (296)

Planar channeling in superlattices: Resonance channeling

Physical Review B, 1989
A resonance effect is reported for planar channeling of MeV helium ions in a strained-layer superlattice. In addition to the well-documented catastrophic dechanneling which maximizes dechanneling, a novel resonance channeling effect has been observed that minimizes the dechanneling. These two contrasting phenomena are demonstrated in a single sample by
, Allen, , Chu, , Picraux, , Biefeld, , Ellison   +4 more
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Channel Shortening for Nonlinear Satellite Channels

IEEE Communications Letters, 2012
We design of an efficient channel shortener for nonlinear satellite channels. When the memory of the channel is too large to be taken into account by a full complexity detector, excellent performance can be achieved by properly filtering the received signal followed by a reduced-state detector.
Giulio Colavolpe, Andrea Modenini, Fredrik Rusek   +2 more
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Channel configuration of multiple-access channel

International Symposium onInformation Theory, 2004. ISIT 2004. Proceedings., 2004
This paper investigates the channel configuration of multiple-access channel (MAC) by decomposing the MAC into finite subMAC and also proves that there exists an input probability that achieves boundary of a capacity region and the total capacity of the original MAC.
Yoichiro Watanabe, Koichi Kamoi
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When a Channel Is Not a Channel

Science Signaling, 2010
In fish, the calcium channel required for excitation-contraction coupling does not conduct calcium.
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On the Bit-Channels for Channel Polarization

2022 IEEE International Symposium on Information Theory (ISIT), 2022
Wen-Yao Chen, Chung-Chin Lu
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WHEN IS A CHANNEL NOT A CHANNEL?

Journal of Experimental Biology, 2004
![Figure][1] Most physiologists would not have too much difficulty describing the difference between a channel and a transporter. A channel is a hydrophilic pore through a membrane, which can let through many thousands of ions each time it opens.
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Channel capacities of fading radio channels

Proceedings of PIMRC '96 - 7th International Symposium on Personal, Indoor, and Mobile Communications, 2002
Channel capacities of various channel models are investigated. We consider two frequency selective channels, the indoor radio channel, simulated with ray tracing, and the two path channel. Additionally Rayleigh-, Rice- and Nakagami-m-distributed stochastic channel models and the discrete-time additive Gaussian noise channel with binomial distributed ...
Thomas Huschka, Markus Reinhardt, Jürgen Lindner   +2 more
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MIMO Broadcast Channels with Channel Estimation

2007 IEEE International Conference on Communications, 2007
We consider a multi-user MIMO downlink where the transmitter has only estimates of the channel while the receivers have perfect channel information. The impact of channel estimation error on the sum rate is studied. It is shown that the sum rate saturates due to the inaccurate channel information.
Jun Shi 0001, Minnie Ho
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Retailer's channel structure choice: Online channel, offline channel, or dual channels?

International Journal of Production Economics, 2017
Abstract Extensive research has been done on a manufacturer's channel structure choice. In this paper, we study a retailer's channel structure choice and pricing decisions in a supply chain with a manufacturer and a retailer. To this end, we first derive the manufacturer's optimal wholesale price and the retailer's optimal retail price(s) under all ...
Peng Zhang, Yong He, Chunming (Victor) Shi   +2 more
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On the channel capacity of wireless fading channels

Proceedings of the 41st IEEE Conference on Decision and Control, 2002., 2004
The objectives of this paper are twofold. First, to point out the significance of certain results on stochastic processes in computing the channel capacity for flat fading wireless channels. Next, to design an optimal encoding and decoding strategies for general sources, when the channel is perfectly known to both transmitter and receiver.
Charalambos D. Charalambous, Stojan Z. Denic   +1 more
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