Results 31 to 40 of about 136,074 (335)

Multiplexed imaging of tumor immune microenvironmental markers in locally advanced or metastatic non‐small‐cell lung cancer characterizes the features of response to PD‐1 blockade plus chemotherapy

open access: yesCancer Communications, Volume 42, Issue 12, Page 1331-1346, December 2022., 2022
Abstract Background Although programmed cell death 1 (PD‐1) blockade plus chemotherapy can significantly prolong the progression‐free survival (PFS) and overall survival (OS) in first‐line settings in patients with driver‐negative advanced non‐small‐cell lung cancer (NSCLC), the predictive biomarkers remain undetermined.
Fengying Wu   +39 more
wiley   +1 more source

Food metabolomics: Latest hardware—developments for nontargeted food authenticity and food safety testing

open access: yesELECTROPHORESIS, Volume 43, Issue 23-24, Page 2334-2350, December 2022., 2022
Abstract The analytical requirements for food testing have increased significantly in recent years. On the one hand, because food fraud is becoming an ever‐greater challenge worldwide, and on the other hand because food safety is often difficult to monitor due to the far‐reaching trade chains.
Marina Creydt, Markus Fischer
wiley   +1 more source

A REVIEW STUDY ON ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING [PDF]

open access: yesPARIPEX INDIAN JOURNAL OF RESEARCH, 2021
The advancement in the up-grading of technology and proliferation in data accessibility is changing the economics of digital communication; therefore, this enables the reexamining of the previous design and approach to network architectures. This research paper focused on advancements in technology in the past few years and concentrate on OFDM ...
Vishal Ghode   +2 more
openaire   +1 more source

MIMO-OFDM/OCDM low-complexity equalization under a doubly dispersive channel in wireless sensor networks

open access: yesInternational Journal of Distributed Sensor Networks, 2020
In this article, three novel systems for wireless sensor networks based on Alamouti decoding were investigated and then compared, which are Alamouti space–time block coding multiple-input single-output/multiple-input multiple-output multicarrier ...
Ahmad AA Solyman   +3 more
doaj   +1 more source

Performance Analysis of Orthogonal Multiplexing Techniques for PLC Systems with Low Cyclic Prefix Length and Symbol Timing Offset

open access: yesSensors, 2023
This paper investigates the degradation caused by interference resulting from cyclic prefix violation and symbol timing offset in narrowband power line communication systems. In this sense, it presents a unified formulation from which Hermitian symmetric
Túlio Fernandes Moreira   +3 more
doaj   +1 more source

Spectrum-Efficient Triple-Layer Hybrid Optical OFDM for IM/DD-Based Optical Wireless Communications [PDF]

open access: yes, 2020
In this paper, a triple-layer hybrid optical orthogonal frequency division multiplexing (THO-OFDM) for intensity modulation with direct detection (IM/DD) systems with a high spectral efficiency is proposed.
Ghassemlooy, Zabih   +5 more
core   +2 more sources

Orthogonal Time Sequency Multiplexing Modulation: Analysis and Low-Complexity Receiver Design [PDF]

open access: yes, 2021
This paper proposes orthogonal time sequency multiplexing (OTSM), a novel single carrier modulation scheme that places information symbols in the delay-sequency domain followed by a cascade of time-division multiplexing (TDM) and Walsh-Hadamard sequence multiplexing.
arxiv   +1 more source

Energy-efficiency improvements for optical access [PDF]

open access: yes, 2014
This article discusses novel approaches to improve energy efficiency of different optical access technologies, including time division multiplexing passive optical network (TDM-PON), time and wavelength division multiplexing PON (TWDM-PON), point-to ...
Anthapadmanabhan, P   +8 more
core   +1 more source

Review on Interference Cancellation in MIMO Receiver [PDF]

open access: yes, 2022
The signal processing in orthogonal frequency division multiplexing and the effect of channel interference are presented in this paper. We've also talked about different multiplexing techniques like frequency division multiplexing and time division ...
Chourasia, Dr. Bharti   +2 more
core   +1 more source

Eigenvalue-Decomposition-Precoded Ultra-Dense Non-Orthogonal Frequency-Division Multiplexing

open access: yesIEEE Transactions on Wireless Communications, 2020
This paper proposes a novel ultra-dense non-orthogonal frequency-division multiplexing (NOFDM) transmission, where subcarrier spacing is set significantly lower than that of orthogonal frequency-division multiplexing (OFDM).
Seichiroh Osaki, T. Ishihara, S. Sugiura
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy