Results 21 to 30 of about 8,203 (170)
On daily interpolation of precipitation backed with secondary information [PDF]
, 2010 This paper investigates the potential impact of secondary information on rainfall mapping applying Ordinary Kriging. Secondary information tested is a natural area indicator, which is a combination of topographic features and weather conditions.
Ahrens, Bodo, Krähenmann, Stefan
core +2 more sources
Analytical bound for the CCDF of Crest Factor in NC-OFDM Systems
Journal of Communications Software and Systems, 2017 Non-contiguous orthogonal frequency division multiplexing (NC-OFDM) is a promising framework for wireless communication systems due to OFDM characteristics like the spectral bandwidth efficiency, robustness to frequency selective fading channels, etc.
Bendimerad, Mohammed Yassine +2 more
openaire +4 more sources
A Multi-Carrier Waveform Design for 5G and beyond Communication Systems
Mathematics, 2020 The next generation communication network (NGCN) is expected to provide higher spectral efficiency, low latency, large throughput and massive machine-to-machine type communications. In this regard, the design of the multi-carrier waveform (MCW) is posing
Imran Baig +4 more
doaj +1 more source
Study on PAPR Reduction Based on Correlation of Chaotic Sequences [PDF]
Jisuanji kexue, 2022 After analyzing the main techniques to reduce the peak to average power ratio (PAPR),a partial transmission sequence method (CL-PTS) based on low correlation of chaotic sequences is proposed to solve the problem that the reduction effect is gene-rally ...
ZHAO Geng, WANG Chao, MA Ying-jie
doaj +1 more source
SUPPRESSED CARRIER FREQUENCY DIVISION MULTIPLEXING FOR INDOOR OPTICAL WIRELESS COMMUNICATION
ICTACT Journal on Communication Technology, 2021 Asymmetrically clipped orthogonal frequency division multiplexing (ACO-OFDM) is one of the optical modulation techniques for indoor optical wireless communication systems (OWC) to enable intensity (IM) modulation and direct detection (DD). As compared to
Jayasudha Koti, B K Mishra
doaj +1 more source
Eigenvalue Dynamics of a Central Wishart Matrix with Application to MIMO Systems [PDF]
, 2015 We investigate the dynamic behavior of the stationary random process defined by a central complex Wishart (CW) matrix ${\bf{W}}(t)$ as it varies along a certain dimension $t$.
Goldsmith, Andrea +3 more
core +1 more source
PAPR Reduction in Optical OFDM Using Lexicographical Permutations With Low Complexity
IEEE Access, 2022 Efficient utilization of the spectrum, increased resilience to inter-symbol interference (ISI) and simpler channel equalization are becoming important considerations in the design of wireless communication systems including visible light communication ...
Roland Niwareeba +2 more
doaj +1 more source
Journal of Alloys and Metallurgical SystemsThis study presents a novel cost-effective Fe30Ni25Cr25Mo10Al10 high-entropy alloy with a dual-phase microstructure that was processed using cyclic closed-die forging (CCDF) at room temperature for a maximum of six passes.
Majid Naseri +12 more
doaj +1 more source
Analysis of PAPR in optical OFDM systems with grouped LEDs [PDF]
, 2017 The need for multiple transmit chains poses a major challenge in optical orthogonal frequency division multiplexing (OFDM) system utilising grouped light emitting diodes (LEDs) for the purpose of peak-to-average power ratio (PAPR) reduction. Thus, recent
Offiong, Funmilayo B. +2 more
core +2 more sources
, 2022 Abstract OFDM is a multicarrier modulation technology utilized in various wireless communication systems and standards for its high data rate, high spectral coherence, and tolerance to multi-path fading channels. However, one of the most significant barriers in implementing an OFDM system is decreasing the peak-to-average ratio (PAPR).
Harsh Dhiman +3 more
openaire +1 more source