Results 61 to 70 of about 161,361 (250)

Instantaneous Capacity of OFDM on Rayleigh-Fading Channels [PDF]

IEEE Transactions on Information Theory, 2007
For a power limited orthogonal frequency-division multiplexing (OFDM) system transmitting a large number N of subcarriers over a Rayleigh-fading channel, the distribution of the instantaneous capacity is shown to be approximately Gaussian. The mean and variance of the approximating distribution are derived.
Alan Clark, Peter J. Smith 0001, Desmond P. Taylor   +2 more
openaire   +3 more sources

Large droplet release

Droplet, EarlyView.
Curved hydrophobic mesh surfaces enable stable release of large droplets exceeding the capillary length. By tuning surface curvature, porosity, and acceleration, oscillatory breakup is suppressed, producing near‐spherical droplets ideal for high‐precision fluid applications and multiphase flow control.
Aqeel Almanashi, Sandip Dighe, Dilip Maity, Jeffrey Fonnesbeck, Fauzia W. K. F. Wardani, Som Dutta, Tadd T. Truscott   +6 more
wiley   +1 more source

An Accurate Sample Rejection Estimator of the Outage Probability With Equal Gain Combining

IEEE Open Journal of the Communications Society, 2020
We evaluate the outage probability (OP) for L-branch equal gain combining (EGC) receivers operating over fading channels, i.e., equivalently the cumulative distribution function (CDF) of the sum of the L channel envelopes.
Nadhir Ben Rached, Abla Kammoun, Mohamed-Slim Alouini, Raul Tempone   +3 more
doaj   +1 more source

Non‐monotonic jet pinch‐off induced by droplet impact on immiscible liquids

Droplet, EarlyView.
The graphical abstract shows the evolution of the central jet following droplet impact and summarizes the non‐monotonic dependence of the critical Weber number on the dimensionless film thickness and Ohnesorge number. Abstract Droplet impact on immiscible liquids can generate a central jet whose pinch‐off behavior plays a crucial role in many advanced ...
Shuo Wang, Wenshu Jiang, Shuhua Zhou, Yan Luo, Tao Lu, Xue Chen   +5 more
wiley   +1 more source

Erasure Insertion in RS-Coded SFH MFSK Subjected to Tone Jamming and Rayleigh Fading

, 2007
The achievable performance of Reed Solomon (RS) coded slow frequency hopping (SFH) assisted M-ary frequency shift keying (MFSK) using various erasure insertion (EI) schemes is investigated, when communicating over uncorrelated Rayleigh fading channels in
Ahmed, S, Yang, L-L, Hanzo, L
core   +1 more source

Aero‐breakup of droplets: Recent progress and outlook

Droplet, EarlyView.
This work systematically reviews the recent progress of droplet aero‐breakup studies. The discussion covers the research history, theoretical framework, new breakup mode discoveries, influence of droplet fluid properties, scenarios of multi‐droplet and droplet cloud, and finally, an outlook for future explorations is presented. Abstract Aero‐breakup of
Ben Guan, Weijie Zhang, Jianguo Wang, Chih‐Yung Wen, Yu Liang   +4 more
wiley   +1 more source

Performance Analysis of SPSK with Dual Polarized Transmit Antennas over Rayleigh Fading Channel

Journal of Telecommunications and Information Technology, 2018
In this paper, the Space Polarization Shift Keying (SPSK) system, which is an extended version of Space Shift Keying (SSK) and includes both space and polarization dimensions with dual polarized antennas, is studied.
Malarvizhi Subramani, Arumbu Vanmathi Neduncheran, Vijayakumar Ponnusamy   +2 more
doaj   +1 more source

Tuning Colloidal Stability and Photothermal Conversion Efficiency of Graphite Nanofluids via Anionic‐Nonionic Surfactant Engineering

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Graphite nanofluids were stabilized using a mixed SDS/Tween 80 surfactant system. The optimized formulation exhibited enhanced colloidal stability, red‐shifted UV–Vis absorption, and improved photothermal conversion under solar irradiation. Achieving stable dispersion of graphite flakes (GFs) in aqueous media remains a critical challenge in developing ...
Ahmad Chehade, Shoaib Anwer, Md Islam, Eiyad Abu‐Nada   +3 more
wiley   +1 more source

Pulse Shaping in MIMO COFDM over Rayleigh Fading Channels

, 2009
In order to improve the performance of space-time coded(STC) multiple input multiple output (MIMO) orthogonal frequency division multiplexing (OFDM) enhancements were implemented in a MatLab simulation by shaping the OFDM pulses transmitted through ...
Xiang, Wei, Russell, Julian, Julian Russell, Wei Xiang   +3 more
core   +1 more source

Two-Dimensional Joint Acquisition of Doppler Factor and Delay for MC-DS-CDMA in LEO Satellite System

IEEE Access, 2020
Low Earth Orbit (LEO) satellite systems have received considerable attentions for its advantages and potential applications in global communication. Yet LEO satellite-ground communication is challenged by the huge Doppler shift.
Entong Meng, Xiangyuan Bu
doaj   +1 more source