Results 41 to 50 of about 1,277,780 (284)

The Poisson multiple-access channel [PDF]

IEEE Transactions on Information Theory, 1998
The Poisson multiple-access channel (MAC) models many-to-one optical communication through an optical fiber or in free space. For this model we compute the capacity region for the two-user case as a function of the allowed peak power. Focusing on the maximum throughput we generalize our results to the case where the users are subjected to an additional
A. Lapidoth, S. Shamai
openaire   +1 more source

Capacity-Achieving Signals for Point-to-Point and Multiple-Access Channels Under Non-Gaussian Noise and Peak Power Constraint

IEEE Access, 2018
This paper generalizes and proves the discrete and finite nature of the capacity-achieving signaling schemes for general classes of non-Gaussian point-to-point and multiple-access channels (MACs) under peak power constraints.
Mohammad Ranjbar, Nghi H. Tran, Truyen V. Nguyen, Mustafa Cenk Gursoy, Hung Nguyen-Le   +4 more
doaj   +1 more source

Anti-conflict design for reading and writing of DDR3 six channels based on FPGA

Dianzi Jishu Yingyong, 2018
In order to solve the problem of data conflict of reading and writing when multiple channels access DDR3 at the same time in the acceleration processing of futures market data, an anti-conflict design for reading and writing of DDR3 six channels based on
Zhang Fengqi, Zhang Yanbin, Wang Zhongyong   +2 more
doaj   +1 more source

Distributed parameter estimation in wireless sensor networks in the presence of fading channels and unknown noise variance

International Journal of Distributed Sensor Networks, 2018
Parameter estimation is one of the most important research areas in wireless sensor networks. In this study, we consider the problem of estimating a deterministic parameter over fading channels with unknown noise variance.
Shoujun Liu, Kezhong Liu, Jie Ma, Wei Chen   +3 more
doaj   +1 more source

Spread Spectrum Modulation with Grassmannian Constellations for Mobile Multiple Access Underwater Acoustic Channels

Sensors, 2022
The objective of this study is to evaluate Grassmannian constellations combined with a spread spectrum multiple access scheme for underwater acoustic mobile multiple access communication systems.
Christophe Bernard, Pierre-Jean Bouvet, Beatrice Tomasi   +2 more
doaj   +1 more source

Optimal Power Control in Decentralized Gaussian Multiple Access Channels

, 2018
We consider the decentralized power optimization problem for Gaussian fast-fading multiple access channel (MAC) so that the average sum-throughput is maximized.
Singh, Kamal
core   +1 more source

Infection Control Practices for Vascular Access Management in Hemodialysis: Results From a Nationwide Survey of Japanese National University Hospitals

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Bloodstream infections due to repeated vascular access (VA) puncture and circuit connections remain major concerns in hemodialysis. Therefore, we examined current practices for glove, disinfectant, and personal protective equipment (PPE) use according to VA type in national university hospitals in Japan.
Aiko Yamada, Makoto Harada, Tadahiko Kikugawa, Takeshi Nakata, Koji Hashimoto, Tsuneo Konta, Yuji Kamijo   +6 more
wiley   +1 more source

Random access and source-channel coding error exponents for Multiple Access Channels [PDF]

2013 IEEE International Symposium on Information Theory, 2013
Comment: This paper is submitted to IEEE transactions on information theory. It was presented in part at ISIT2013 (IEEE International Symposium on Information Theory, Istanbul)
Farkas, Lóránt, Kói, Tamás
openaire   +3 more sources

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Distributed Joint Source-Channel Coding in Wireless Sensor Networks

Sensors, 2009
Considering the fact that sensors are energy-limited and the wireless channel conditions in wireless sensor networks, there is an urgent need for a low-complexity coding method with high compression ratio and noise-resisted features.
Lin Zhang, Xuqi Zhu, Yu Liu
doaj   +1 more source