Results 101 to 110 of about 652,829 (286)
Temporal dependent rate-distortion optimization based on distortion backward propagation
Tongxin xuebao, 2022 Rate-distortion optimization (RDO) is a crucial technique in block based hybrid video encoders.However, the widely used independent RDO is far from obtaining optimal coding performance.To improve the rate-distortion (R-D) performance of high efficiency ...
Hongwei GUO, Ce ZHU, Xu YANG, Lei LUO
doaj +2 more sources
Resource allocation algorithm for downlink multiuser CoMP system
Tongxin xuebao, 2013 For downlink multiuser coordinated multi-point transmission (MU-CoMP) system,a fast resource allocation algorithm was proposed to solve the margin adaptive (MA) problem.Firstly the algorithm estimated the number of sub-carriers for each user based on its
Yong-hong KUO +3 more
doaj +2 more sources
Performance Evaluation of MRMED Algorithm by Monitoring BER
Sir Syed University Research Journal of Engineering and Technology, 2021 In this research work, we have developed a communication system (transmitter / receiver) to control peak to average power (PAPR) with small bit error rate (BER) for a 4G system called multicode code division multiple access (MCCDMA).
SYED RIZWAN-UL-HASAN, Muhammad Tahir
doaj
Nanothermometry in Living Cells: Physical Limits, Conceptual and Material Challenges
Advanced Functional Materials, EarlyView.Heat and temperature are fundamental to life. When nanothermometers began probing regions as small as a living cell, they triggered controversial claims of large intracellular temperature gradients. We review physical constraints energy‐conservation, entropy production, thermodynamic fluctuations, and molecular dynamics.
Taras Plakhotnik
wiley +1 more source
Two-Stage Maximum Likelihood Estimation (TSMLE) for MT-CDMA Signals in the Indoor Environment
EURASIP Journal on Wireless Communications and Networking, 2004 This paper proposes a two-stage maximum likelihood estimation (TSMLE) technique suited for multitone code division multiple access (MT-CDMA) system. Here, an analytical framework is presented in the indoor environment for determining the average bit ...
Sesay Abu B +2 more
doaj +2 more sources
Bit error rate performance analysis of SIMO-UWOC systems in fading environments
Dianxin kexueIn the marine turbulence fading environment, a hybrid fading channel model was considered, which included the effects of generalized Gamma distribution (GGD) marine turbulence, zero-mean axis pointing errors, and path loss.
ZHU Jiabin, LI Yueheng, WANG Weijie
doaj
An Engineered Living Material With Pro‐Angiogenic Activity Inducible by Near‐Infrared Light
Advanced Functional Materials, EarlyView.NIR‐responsive engineered living materials (ELMs) for controlled angiogenesis: Near‐infrared (800 nm) light activates engineered probiotic bacteria within alginate‐based living materials to secrete a blood vessel‐regenerating protein. The released protein promotes pro‐angiogenic effects in endothelial networks and chick chorioallantoic membranes.
Anwesha Chatterjee +4 more
wiley +1 more source
On the Feasibility of Efficient Multiamplitude Communication [PDF]
Bandwidth constraints in earth-satellite communication systems force consideration of uncoded M-ary modulation to obtain increased data rates. M-ary phase shift keying (MPSK) at first glance seems most promising because of the high transmitter efficiency
Smith, J. G.
core +1 more source
Advanced Functional Materials, EarlyView.Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner +14 more
wiley +1 more source
PERFORMANCE IMPROVEMENT OF OFDM SYSTEM BY PEAK TO AVERAGE POWER REDUCTION THROUGH PULSE SHAPING TECHNIQUE [PDF]
ICTACT Journal on Communication Technology, 2010 OFDM is a form of multicarrier modulation technique with high spectral efficiency, robustness to channel fading, immunity to impulse interference, uniform average spectral density capacity of handling very strong echoes and non-linear distortion. Despite
Susmita Das +2 more
doaj