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