Results 81 to 90 of about 16,777,617 (240)
Sensors, 2019 Future safety applications require the timely delivery of messages between vehicles. The 802.11p has been standardized as the standard Medium Access Control (MAC) protocol for vehicular communication.
Mohammed Abdulhakim Al-Absi +2 more
doaj +1 more source
, 2007 While multiple-access communication dates back to systems invented in the 1870's to transmit simultaneous data through a single wire, the foundation of the discipline now known as 'multiuser information theory' was laid in 1961, when Claude E.
Laczay, Bálint +2 more
core
Structural and biochemical analysis of a B12 superbinder
FEBS Letters, EarlyView.BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices +3 more
wiley +1 more source
IEEE Open Journal of the Communications SocietyThis paper introduces the orthogonal chirp-frequency-division multiple access (OCFDMA), a technique based on orthogonal chirp-frequency-division multiplexing that partitions the frequency band into independent chirp-based subchannels, referred to as ...
Tulio F. Moreira +2 more
doaj +1 more source
Multiple Access Euclidean Channel
, 2007 While multiple-access communication dates back to systems invented in the 1870's to transmit simultaneous data through a single wire, the foundation of the discipline now known as 'multiuser information theory' was laid in 1961, when Claude E.
Füredi, Zoltán +2 more
core
FEBS Letters, EarlyView.Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav +2 more
wiley +1 more source
The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation
FEBS Letters, EarlyView.Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge +6 more
wiley +1 more source
Robust coding for multiple-access channels [PDF]
IEEE Transactions on Information Theory, 1986 The problem of minimax robust coding for classes of multiple-access channels with uncertainty in their statistical description is addressed. We consider 1) discrete memoryless multiple-access channels with uncertainty in the probability transition matrices and 2) discrete-time stationary additive Gaussian multiple-access channels with spectral ...
openaire +1 more source
Three design aspects of multicarrier interleave division multiple access [PDF]
, 2008 This paper presents a novel generalized transceiver architecture, i.e., Multicarrier Interleave-Division-Multiplexing-aided Interleave Division Multiple Access (MC-IDM-IDMA). A parallel interference cancellation (PIC)-aided iterative multiuser detection (
Zhang, Rong, Hanzo, Lajos
core +1 more source