Results 91 to 100 of about 537,997 (309)

Performance of Broadband Multicarrier DS-CDMA using Space-Time Spreading-Assisted Transmit Diversity [PDF]

open access: yes, 2005
In this contribution multicarrier direct-sequence code-division multiple-access (MC DS-CDMA) using space–time spreading (STS)-assisted transmit diversity is investigated in the context of broadband communications over frequency-selective Rayleigh-fading ...
Yang, L-L., Hanzo, L.
core  

Bit error simulation of DQPSK for a slow frequency hopping CDMA system in mobile radio communications [PDF]

open access: yes, 1995
Spread spectrum (SS) techniques seem to be an attractive alternative to conventional narrow-band modulation. In this paper a frequency hopping (FH) system model based on slow FH (SFH) is proposed.
Mortazavi, SH   +3 more
core   +1 more source

On Clutter Ranks of Frequency Diverse Radar Waveforms

open access: yesCoRR, 2016
13 pages, 11 ...
Yimin Liu 0003   +3 more
openaire   +2 more sources

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

open access: yesFEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa   +2 more
wiley   +1 more source

Laboratory and field trials evaluation of transmit delay Diversity applied to DVB-T/H networks [PDF]

open access: yes, 2010
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The requirements for future DVB-T/H networks demand that broadcasters design and deploy networks that provide ubiquitous reception in challenging indoors ...
Di Bari, Raffaele
core  

Bandwidth-efficient power-efficient frequency diversity MIMO-OFDM system

open access: yesDiscover Applied Sciences
This study utilizes a frequency-diversity approach to enhance the bit-error-rate (BER) performance in orthogonal-frequency-division-multiplexing (OFDM) systems.
Eman Zakaria   +3 more
doaj   +1 more source

Phosphoinositides and inositol phosphates as molecular glues

open access: yesFEBS Letters, EarlyView.
Inositol phosphates (IPs) and phosphoinositides (PIPs) regulate diverse eukaryotic processes. Beyond recruiting signaling proteins or acting as structural cofactors, recent studies suggest they mediate protein–protein interactions as natural molecular glues.
Aleshia Seaton‐Terry   +9 more
wiley   +1 more source

Laboratory measurement campaign of DVB-T signal with transmit delay diversity [PDF]

open access: yes, 2008
The requirements for future DVB-T/H networks demand that broadcasters design and deploy networks that provide ubiquitous reception in challenging indoors and other obstructed situations.
Nilavalan, Rajagopal   +23 more
core   +1 more source

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

open access: yesFEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee   +7 more
wiley   +1 more source

Remembering 'zeal' but not 'thing':reverse frequency effects as a consequence of deregulated semantic processing [PDF]

open access: yes, 2011
More efficient processing of high frequency (HF) words is a ubiquitous finding in healthy individuals, yet frequency effects are often small or absent in stroke aphasia.
Paul Hoffman   +7 more
core   +1 more source

Home - About - Disclaimer - Privacy