Results 41 to 50 of about 53,850 (285)

Multifunctional MIMO systems: A combined diversity and multiplexing design perspective

open access: yes, 2010
In this treatise we investigate the design alternatives of different multiple-input multiple-output schemes while considering the attainable diversity gains, multiplexing gains, and beamforming gains.
El Hajjar, Mohammed, Hanzo, Lajos
core   +1 more source

Design and Characteristics of Diamond-Assisted Ring-Core Fiber for Space Division Multiplexing

open access: yesPhotonics, 2022
In this paper, a novel diamond-assisted ring-core fiber (DRF) is proposed. With the introduction of a low-refractive-index diamond-shaped region located in the center of the core, the proposed fiber effectively eliminates spatial degeneracy of the LPmn ...
Yujing Song   +7 more
doaj   +1 more source

Cyclic division algebras: a tool for space-time coding [PDF]

open access: yes, 2007
Multiple antennas at both the transmitter and receiver ends of a wireless digital transmission channel may increase both data rate and reliability. Reliable high rate transmission over such channels can only be achieved through Space–Time coding.
Belfiore, Jean-Claude   +2 more
core   +1 more source

Network divergence analysis identifies adaptive gene modules and two orthogonal vulnerability axes in pancreatic cancer

open access: yesMolecular Oncology, EarlyView.
Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson   +9 more
wiley   +1 more source

Orbital Angular Momentum Multiplexed Free-Space Optical Communication Systems Based on Coded Modulation

open access: yesApplied Sciences, 2018
In this paper, we experimentally investigate the turbulence mitigation methods in free-space optical communication systems based on orbital angular momentum (OAM) multiplexing.
Zhen Qu, Ivan B. Djordjevic
doaj   +1 more source

Adaptive spatial mode of space-time and spacefrequency OFDM system over fading channels [PDF]

open access: yes, 2006
In this paper we present a 2 transmit 1 receive (1 Tx : 1 Rx) adaptive spatial mode (ASM) of space-time (ST) and space-frequency (SF) orthogonal frequency division multiplexing (OFDM). At low signal to noise ratio (SNR) we employ ST-OFDM and switch to
A. Rahman, Tharek   +4 more
core   +1 more source

Cell‐cycle‐specific lesion evolution rather than inhibition of double‐strand‐break repair underpins cisplatin radiosensitization

open access: yesMolecular Oncology, EarlyView.
We analyze cisplatin–DNA adducts (CDAs) and double‐strand breaks (DSBs) in a cell‐cycle‐dependent manner. We find that CDAs form similarly across all cell cycle phases. DSBs arise only in S‐phase. CDAs might not directly impair DSB repair, but S‐phase DSB lesions evolve in the presence of CDAs and disrupt repair in G2, also causing radiosensitization ...
Ye Qiu   +10 more
wiley   +1 more source

High throughput MIMO-OFDM WLAN for urban hotspots [PDF]

open access: yes, 2005
This paper presents a set of rigorous and comprehensive coverage and throughput studies for enhanced high-capacity Multi-Input Multi-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) systems.
Bian, YQ   +3 more
core   +2 more sources

UiO‐66 metal–organic frameworks in biomedicine: From structural tunability to bioimaging, photodiagnostics, and photodynamic cancer therapy

open access: yesFEBS Open Bio, EarlyView.
UiO‐66(Zr) metal–organic frameworks are chemically stable, biocompatible, and highly tunable nanomaterials. Their modular structure enables controlled drug delivery, multimodal bioimaging, and light‐activated photodynamic therapy, supporting integrated diagnostic and therapeutic (theranostic) applications in cancer and biomedical research.
Veronika Huntošová   +2 more
wiley   +1 more source

Layered Steered Space–Time-Spreading-Aided Generalized MC DS-CDMA

open access: yes, 2010
—We present a novel trifunctional multiple-input– multiple-output (MIMO) scheme that intrinsically amalgamates space–time spreading (STS) to achieve a diversity gain and a Vertical Bell Labs layered space–time (V-BLAST) scheme to attain a multiplexing ...
Alamri, Osamah   +3 more
core   +1 more source

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