Results 61 to 70 of about 208,509 (216)

On the Use of Gaussian Approximation in Analyzing the Performance of Optical Receivers

IEEE Photonics Journal, 2014
The analytical calculation of the bit error rate (BER) of digital optical receivers that employ avalanche photodiodes (APDs) is challenging due to 1) the stochastic nature of the avalanche photodiode's impulse-response function and 2) the presence of ...
G. El-Howayek, C. Zhang, Y. Li, J. S. Ng, J. P. R. David, M. M. Hayat   +5 more
doaj   +1 more source

Average BER performance of MPSK with noisy phase reference in Nakagami‐m fading channel

Electronics Letters, 2021
This letter derives an approximate average bit error rate (BER) expression of M‐ary phase shift keying with a noisy phase reference in a Nakagami‐m fading channel.
Yeonsoo Jang
doaj   +1 more source

Topological Photonic Devices and Circuits at Terahertz Frequencies

Laser &Photonics Reviews, EarlyView.
This review examines how 3D topological insulators and emerging topological photonic phases enable robust, low‐loss and defect‐immune terahertz devices. Fundamental properties, device implementations and topological transport mechanisms are surveyed, revealing new opportunities for reconfigurable, high‐performance THz components and scalable ...
Samane Kalhor, Srabani Kar, Ranjan Singh, Kaveh Delfanazari   +3 more
wiley   +1 more source

Hyperglycaemia‐induced reactive oxygen species production in cardiac ventricular myocytes differs among mammals

The Journal of Physiology, EarlyView.
Abstract figure legend In rat and human adult ventricular myocytes, acute hyperglyceaemia (Glucose) causes increased glucose uptake (via GLUT) leading to O‐GlcNAcylation of CaMKII at Ser280, such that CaMKII activates NADPH oxidase 2 (NOX2) to increase cytosolic reactive oxygen species (ROS). That perturbs the ROS to Antioxidant (AntiOx) balance.
Shan Lu, Maria J. Baier, Risto‐Pekka Polonen, Zhandi Liao, Jody L. Martin, Kenneth S. Ginsburg, Julian Mustroph, Donald M. Bers   +7 more
wiley   +1 more source

Analysis of Bit Rate and Distance Variation on Multiplexing System of Indoor Li-Fi Technology Using Movable LED Panel

Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi), 2023
The major problem of using light fidelity (Li-Fi) technology is still limited to the line of sight (LOS) conditions, which poses a challenge to perform bandwidth efficiency to support increased bit rates, especially for indoor use.
Fauza Khair, I Wayan Mustika, Anggun Fitrian Isnawati3, Nur Azizah   +3 more
doaj   +1 more source

Systematic Benchmarking of Climate Models: Methodologies, Applications, and New Directions

Reviews of Geophysics, Volume 64, Issue 1, March 2026.
Abstract As climate models become increasingly complex, there is a growing need to comprehensively and systematically assess model performance with respect to observations. Given the increasing number and diversity of climate model simulations in use, the community has moved beyond simple model intercomparison and toward developing methods capable of ...
Birgit Hassler, Forrest M. Hoffman, Rebecca Beadling, Ed Blockley, Bo Huang, Jiwoo Lee, Valerio Lembo, Jared Lewis, Jianhua Lu, Luke Madaus, Elizaveta Malinina, Brian Medeiros, Wilfried Pokam, Enrico Scoccimarro, Ranjini Swaminathan   +14 more
wiley   +1 more source

Low error floor LT coding algorithm by using fixed-length node classification window

Tongxin xuebao, 2021
To solve the problem of high error floor for LT codes in additive white Gaussian noise (AWGN) channels, an improved coding scheme was designed.A fixed-length classification window was used to sort out the information nodes with relatively small degrees ...
Xin SONG, Naiping CHENG, Shuyan NI, Yurong LIAO, Tuofeng LEI   +4 more
doaj   +2 more sources

In Cognitive Radio The Analysis Of Bit-Error- Rate (Ber) By Using Pso Algorithm

, 2012
{"references": ["P. Mannion, \"Smart radios stretch spectrum,\" in Electronic Engineering\nTimes (EETimes), vol. 2006: A Global Sources and CMP joint venture,\n2006.", "www.ebooksdownloadfree.com/.../cognitive-radio-technology-Bruce\nFette.", "www.ebooksdownloadfree.com/.../ Particle Swarm Optimization and\nswarm intelligence by Kennedy and Eberhart.",
Shrikrishan Yadav, Akhilesh Saini, Roy, Krishna Chandra   +2 more
openaire   +1 more source

APE1 Activity is Controlled by Non‐G‐Quadruplex Conformations in Single‐ and Double‐Stranded G‐Quadruplex Constructs

Chemistry – A European Journal, Volume 32, Issue 5, 2 February 2026.
G‐quadruplex (G4) folding in DNA is inhibitory to AP endonuclease, although the protein still binds well to G4s. Curiously, partially folded G‐rich sequences, possibly transient hairpins, containing AP are very good substrates for cleavage by APE1. Herein, the enzyme activity and G4 folding are studied in single‐stranded vs. duplex contexts.
Brianna L. Trabucco, Aaron M. Fleming, Cynthia J. Burrows   +2 more
wiley   +1 more source

Degradation Improvement in BER Due to Various Sources of Noise in Optical Transceivers

Journal of Engineering and Sustainable Development, 2005
The quality of digital communications whether at radio or optical frequencies depends primarily on the Bit Error Rate (BER). Reducing the BER improves the communication system behavior.
T. A. AL-Jumailly , Salah A. AL-Abady
doaj