Results 71 to 80 of about 51,792 (292)

Adaptive-Modulation-Enabled WDM Impairment Reduction in Multichannel Optical OFDM Transmission Systems for Next-Generation PONs

IEEE Photonics Journal, 2010
The transmission performance of multichannel adaptively modulated optical orthogonal frequency-division multiplexing (AMOOFDM) signals is investigated numerically, for the first time, in optical-amplification-free and chromatic-dispersion-compensation ...
E. Giacoumidis, J. L. Wei, X. L. Yang, A. Tsokanos, J. M. Tang   +4 more
doaj   +1 more source

Group-indexed orthogonal frequency division multiplexing index modulation aided performance trade off

ETRI Journal, 2022
In this study, a novel group-indexed orthogonal frequency division multiplexing index modulation (OFDM-IM) scheme is proposed to achieve a tradeoff between spectral efficiency (SE) and bit-error-rate (BER) performance.
Thomas Wilfred Edison Athisaya Anushya, Thangavelu Laxmikandan, Thirunavukkarasu Manimekalai   +2 more
doaj   +1 more source

Enhanced High Dimensionality and the Information Processing Capacity in Interfered Spin Wave‐Based Reservoir Computing, Achieved With Eight Detectors

Advanced Electronic Materials, EarlyView.
Physical reservoir computing (PRC) based on spin wave interference has demonstrated high computational performance, yet room for improvement remains. In this study, we fabricated this concept PRC with eight detectors and evaluated the impact of the number of detectors using a chaotic time series prediction task.
Sota Hikasa, Wataru Namiki, Daiki Nishioka, Maki Nishimura, Ryo Iguchi, Kazuya Terabe, Takashi Tsuchiya   +6 more
wiley   +1 more source

Iterative Joint Channel Estimation and Multi-User Detection for Multiple-Antenna Aided OFDM Systems

, 2007
Multiple-Input-Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) systems have recently attracted substantial research interest. However, compared to Single-Input-Single-Output (SISO) systems, channel estimation in the MIMO scenario
Akhtman, J, Hanzo, L., Jiang, M
core   +1 more source

Recent Advances in Programmable Metasurfaces and Meta‐Devices

Advanced Electronic Materials, EarlyView.
Programmable metasurfaces enable various novel functionalities by dynamically tuning electromagnetic wavefronts. This article provides a comprehensive review of recent advances in microwave and terahertz programmable metasurfaces, covering electrical, thermal, optical, and mechanical control mechanisms.
Linda Shao, Chong He, Nan Wang, Liming Si, Weiren Zhu   +4 more
wiley   +1 more source

Pengaruh Frequency Selectivity Pada Orthogonal Frequency Division Multiplexing (OFDM) [PDF]

, 2013
Orthogonal Frequency Division Multiplexing (OFDM) adalah suatu nama khusus dari multicarrier, dimana suatu aliran data berkecepatan tinggi ditransmisikan melalui sejumlah subcarrier berkecepatan rendah.
Ali Mustofa, ST., MT, Fahima Ulfi Tazkia., Ir. Endah Budi P, MT
core  

Diverse Genetic Etiologies of Unilateral Polymicrogyria

Annals of Neurology, EarlyView.
Objective Polymicrogyria (PMG) is one of the most common human malformations of cortical development and is often classified by its radiographic pattern of distribution. Unilateral polymicrogyria (uPMG) is a subtype of PMG affecting a portion or all of one cerebral hemisphere.
Abbe Lai, Jennifer E. Neil, Shyam K. Akula, Dina Amrom, Eva Andermann, Ann Bergin, Roberto Caraballo, Allen Y. Chen, John Gaitanis, Ganeshwaran H. Mochida, Jill M. Gotoff, Giorgi Kuchukhidze, Daphna Marom, Christelle Moufawad ElAchkar, Miriam Regev, Lance H. Rodan, Heather Olson, Bo Zhang, Annapurna Poduri, Diane D. Shao, Christopher A. Walsh, Edward Yang   +21 more
wiley   +1 more source

Coherent optical orthogonal frequency division multiplexing

Electronics Letters, 2006
Coherent optical orthogonal frequency division multiplexing is proposed to combat dispersion in optical media. It is shown that optical-signal-to-noise ratio penalty at 10 Gbit/s is maintained below 2 dB for 3000 km transmission of standard-singlemode fibre without dispersion compensation.
W. Shieh, C. Athaudage
openaire   +1 more source

Synthetic Strategies for Activity‐Based Probes to Decode Ubiquitin‐Like Modifiers

Chemistry – A European Journal, EarlyView.
ABSTRACT Ubiquitin‐like proteins (Ubls) such as SUMO, NEDD8, ISG15, URM1, UFM1, FAT10, ATG8/ATG12, and FUBI are essential regulators of cellular homeostasis, controlling processes from protein stability and trafficking to immune signaling and autophagy.
Saibal Chanda, Alan Pham, SreeNidhi Karnati, Natalia Soto Rodriguez, Alyssa Toner, Wenshe Ray Liu   +5 more
wiley   +1 more source

Joint optimal resource allocation schemes for downlink cooperative cellular networks over orthogonal frequency division multiplexing carriers [PDF]

, 2020
Fatemeh Kaveh, Mohadese Soleimanpour, Siamak Talebi   +2 more
openalex   +1 more source