Results 41 to 50 of about 9,925 (314)

Phase tracking for sub-shot-noise-limited receivers

Physical Review Research, 2020
Nonconventional receivers for phase-coherent states based on non-Gaussian measurements such as photon counting surpass the sensitivity limits of shot-noise-limited coherent receivers, the quantum noise limit (QNL). These non-Gaussian receivers can have a
M. T. DiMario, F. E. Becerra
doaj   +1 more source

Time-Controlled SPAD Receivers in Optical Wireless Communication System

IEEE Photonics Journal, 2023
Single-photon avalanche diodes (SPADs) capable of single photon detection are promising optical sensors for use as receivers in optical wireless communication (OWC) systems.
Junzhi Liu, Wei Jiang, Shiva Kumar, M. Jamal Deen   +3 more
doaj   +1 more source

Data-aided vs. blind single-carrier coherent receivers [PDF]

, 2010
Blind and data-aided single-carrier receivers are discussed for high-speed optical coherent receivers. Equalization concepts are presented and evaluated regarding the implementation complexity and overhead for time-domain and frequency-domain ...
Kainzmaier, P, B. Spinnler, A. Napoli, B. Lankl, M.S. Alfiad, K. Piyawanno, Piyawanno, K, M. Kuschnerov, Spinnler, B., Alfiad, M.S., P. Kainzmaier, Piyawanno, K., Kainzmaier, P., Kuschnerov, M, Lankl, B, Lankl, B., Spinnler, Bernhard, Kuschnerov, M., Al Fiad, MSAS Mohammad, Napoli, A Antonio, Napoli, A.   +20 more
core   +1 more source

Serological Benefit of SARS‐CoV‐2 Vaccination Relative to Infection in Children With Acute Lymphoblastic Leukemia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Children with acute lymphoblastic leukemia (ALL) are at risk of severe outcomes from SARS‐CoV‐2 (SCV2). In the post‐pandemic context, where most children have been infected with SCV2, there are limited data on whether vaccination remains beneficial in children with ALL.
Janna R. Shapiro, Freda Qi, Karen Colwill, Alina D. Dorogy, Ying Liu, Michelle Science, Anne‐Claude Gingras, James M. Rini, Sumit Gupta, Sarah Alexander, Shelly Bolotin, Tania H. Watts   +11 more
wiley   +1 more source

Spectrum-sliced wavelength division multiplexed systems with optical preamplifiers [PDF]

, 2009
The effect of dispersion on a spectrum-sliced wavelength division multi-plexed system with an optical preamplifier receiver is investigated using a theoretical model based on the statistics to improve understanding of spectrum slicing in a realistic ...
Sun, Shaobo, Leeson, Mark S.
core   +1 more source

Sensitivity Improvement of 2.5 Gb/s Receivers Using AlGaAsSb Avalanche Photodiodes

Applied Sciences
At a 1550 nm wavelength, the optical sensitivity of conventional indium gallium arsenide (InGaAs)-based avalanche photodiodes (APDs) is restricted by their high excess noise, hindering their performance in long-range free-space optical communication ...
Jonty Veitch, Ding Chen, Jonathan Petticrew, Jo Shien Ng, Chee Hing Tan   +4 more
doaj   +1 more source

The Role of Hematopoietic Cell Transplantation in Ataxia‐Telangiectasia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Ataxia‐telangiectasia (A‐T) is a DNA repair disorder characterized by neurodegeneration, immunodeficiency, and cancer predisposition. Hematopoietic cell transplantation (HCT) is an established therapy in related disorders such as Fanconi anemia (FA) and Nijmegen breakage syndrome (NBS), but its role in A‐T is unclear.
Laila Alkhouli, Seth Rotz, Masatoshi Takagi, Richa Sharma   +3 more
wiley   +1 more source

Optical Receiver for Optical Time Domain Reflectometer

Elektronika ir Elektrotechnika, 2012
In this paper we analyze an optical receiver (OR) for the optical time domain reflectometer (OTDR). Using optical receiver’s model, which consists of shunt-shunt feedback transimpedance amplifier (TIA) and InGaAs avalanche photodiode (APD), we discuss and give equations for all important noise sources, which are amplifiers input transistor channel ...
Charlamov, Jevgenij, Navickas, Romualdas, Baškys, Algirdas, Barzdėnas, Vaidotas, Nickelson, Liudmila   +4 more
openaire   +2 more sources

Therapeutic Apheresis for Intravenous Methylprednisolone‐Refractory Neuromyelitis Optica Spectrum Disorder: Clinical and Radiological Outcomes in a Single‐Center Case Series

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Neuromyelitis optica spectrum disorder (NMOSD) is a relapsing autoimmune disease of the central nervous system. High‐dose intravenous methylprednisolone (IVMP) is the standard first‐line therapy for acute attacks, although some patients remain refractory.
Wataru Horiguchi, Daisuke Katagiri, Takeyuki Watadani, Shunichi Matsuda, Hiroshi Kaneko, Noritoshi Arai   +5 more
wiley   +1 more source

MIMO MC-CDMA Systems over indoor optical wireless communication channels [PDF]

, 2011
Optical wireless communication systems offer a number of advantages over their radio frequency counterparts. The advantages include freedom from fading, freedom from spectrum regulations and abundant bandwidth.
Alsaadi, Fuad Eid S
core