Results 71 to 80 of about 275 (168)

New Hybrid Schemes for PAPR Reduction in OFDM Systems

, 2018
الـ 3GPP قدمت مشروع LTE لتلبية الطلبات المتزايدة لخدمات الاتصالات ذات السرعة العالية والجودة العالية. يستخدم نظام الـ LTE تقنية مضاعفة تقسيم التردد المتعامد (OFDM) في شكل (OFDMA) في الوصلة الهابطة (Downlink) وشكل الـ (SCFDMA) في الوصلة الصاعدة (Uplink ...
Nokaiee, Saleem, AlKhawlani, Mohammed
core   +1 more source

A Comprehensive Experimental Emulation for OTFS Waveform RF-Impairments. [PDF]

Sensors (Basel), 2022
Abushattal A, Zegrar SE, Yazgan A, Arslan H.   +3 more
europepmc   +1 more source

Pre-Flight Calibration of the Mars 2020 Rover Mastcam Zoom (Mastcam-Z) Multispectral, Stereoscopic Imager. [PDF]

Space Sci Rev, 2021
Hayes AG, Corlies P, Tate C, Barrington M, Bell JF, Maki JN, Caplinger M, Ravine M, Kinch KM, Herkenhoff K, Horgan B, Johnson J, Lemmon M, Paar G, Rice MS, Jensen E, Kubacki TM, Cloutis E, Deen R, Ehlmann BL, Lakdawalla E, Sullivan R, Winhold A, Parkinson A, Bailey Z, van Beek J, Caballo-Perucha P, Cisneros E, Dixon D, Donaldson C, Jensen OB, Kuik J, Lapo K, Magee A, Merusi M, Mollerup J, Scudder N, Seeger C, Stanish E, Starr M, Thompson M, Turenne N, Winchell K.   +42 more
europepmc   +1 more source

The recovery of distorted band-limited signals

, 1961
In this paper we devise a method for recovering band limited signals which have been subjected to a distorting procedure called companding.A band limited signal is a function in L2 whose Fourier transform vanishes outside of a bounded interval.
Landau, H.J, Miranker, W.L
core   +1 more source

Fano resonant optical coatings platform for full gamut and high purity structural colors. [PDF]

Nat Commun, 2023
ElKabbash M, Hoffman N, Lininger AR, Jalil SA, Letsou T, Hinczewski M, Strangi G, Guo C.   +7 more
europepmc   +1 more source

PAPR Reduction of Optical OFDM Systems with Exponential Companding Transform and Zero Padding

Optical wireless communication (OWC) is an alternative to radio frequency (RF)communication with a signi cantly larger and unregulated spectrum. In OWC systems, optical orthogonal frequency division multiplexing (O-OFDM) with intensity modulation and ...
Chen, Deyan
core  

A Novel partial sequence technique based Chaotic biogeography optimization for PAPR reduction in eneralized frequency division multiplexing waveform. [PDF]

Heliyon, 2023
Xue X, Palanisamy S, A M, Selvaraj D, Khalaf OI, Abdulsahib GM.   +5 more
europepmc   +1 more source

Secure Patient Data Transfer Using Information Embedding and Hyperchaos. [PDF]

Sensors (Basel), 2021
Aljuaid H, Parah SA.
europepmc   +1 more source

Repeatability of Linear and Nonlinear Elastic Modulus Maps From Repeat Scans in the Breast. [PDF]

IEEE Trans Med Imaging, 2021
Gendin DI, Nayak R, Wang Y, Bayat M, Fazzio RT, Oberai AA, Hall TJ, Barbone PE, Alizad A, Fatemi M.   +9 more
europepmc   +1 more source

A simple nonlinear companding transform for nonlinear compensation of direct-detection optical OFDM systems

In direct-detection OFDM systems, the nonlinear effects caused by optical modulation and fiber transmission can degrade the system performance severely.
Nguyen, Duc Nhan, Ngo, Thu Trang
core