Zobrazeno 1 - 10
of 56
pro vyhledávání: '"InHo Ha"'
Publikováno v:
IEEE Access, Vol 12, Pp 5365-5372 (2024)
During multi-dimensional optical transmission, because of photodetector (PD) operation as a square law detector, signals get distorted when they are modulated on polarization and phase due to interdimensional interference (IDI) by intensity-modulated
Externí odkaz:
https://doaj.org/article/e370306c41744e9f865f94f58c74b20d
Publikováno v:
IEEE Access, Vol 11, Pp 22526-22530 (2023)
A novel concept for single wavelength high spectral-efficient multi-dimensional optical transmission with geometric and probabilistic constellation shaping and bit mapping technique is presented in this study. We propose a simultaneous Hexagonal RF-Q
Externí odkaz:
https://doaj.org/article/6f71d06f570c44e2bd659032044f7e86
Publikováno v:
IEEE Access, Vol 10, Pp 47266-47274 (2022)
We report a multi–dimensional quadrature amplitude modulation with M-ary differential phase shift keying (QAM-MDPSK) modulation for optical access network transmission systems employing a Mach–Zehnder modulator (MZM) and a phase modulator (PM) in
Externí odkaz:
https://doaj.org/article/f224e2edfc664072862191a60b03322f
Publikováno v:
IEEE Access, Vol 9, Pp 119139-119146 (2021)
In optical transmission technique using optical polarization, the change of state of polarization (SOP) and the rotation of SOP (RSOP) during optical transmission has a significant impact on the transmission performance. We propose polarized intensit
Externí odkaz:
https://doaj.org/article/4688ff943d7643c4b918d27b724ec552
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)
Real-time monitoring human motions normally demands connecting a large number of sensors in a complicated network. To make it simpler, Kim et al. decode the motion of fingers using a flexible sensor attached on wrist that measures skin deformation wi
Externí odkaz:
https://doaj.org/article/797f526273074c249f4dc388256638d3
Publikováno v:
IEEE Access, Vol 8, Pp 23470-23479 (2020)
In coherent orthogonal frequency division multiple accessing technique-based passive optical network (CO-OFDMA-PON) uplink transmission, two main multiple-access noises (MNs), which are multiple- state-of-polarization leakages (SOPLs) and phase noise
Externí odkaz:
https://doaj.org/article/156c492e11204dda85404622b7268165
Autor:
Inho Ha, Minwoo Kim, Kyun Kyu Kim, Sukjoon Hong, Hyunmin Cho, Jinhyeong Kwon, Seonggeun Han, Yeosang Yoon, Phillip Won, Seung Hwan Ko
Publikováno v:
Advanced Science, Vol 8, Iss 20, Pp n/a-n/a (2021)
Abstract Evolution has decided to gift an articular structure to vertebrates, but not to invertebrates, owing to their distinct survival strategies. An articular structure permits kinematic motion in creatures. However, it is inappropriate for creatu
Externí odkaz:
https://doaj.org/article/e5fed2c284e14d8c8be7f2f18def42bb
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-8 (2019)
Touch technology holds potential for the development of smartphones and touchscreens, yet the conventional devices are usually built on separate pressure and location sensing units. Kim et al. show a flexible and transparent touch sensor capable of m
Externí odkaz:
https://doaj.org/article/207a287dba974f28bd1f2b45af942723
Publikováno v:
IEEE Access, Vol 7, Pp 176814-176819 (2019)
A novel spectrally efficient optical transmission in a passive optical network (PON) with hexagonal quadrature amplitude modulation (QAM)-based adaptive modulated optical (AMO) orthogonal frequency division multiplexing (OFDM) is proposed and experim
Externí odkaz:
https://doaj.org/article/a645f805f774492bb46b03d0a16a7fbe
Publikováno v:
Photonics, Vol 8, Iss 1, p 2 (2020)
We propose a modulation-based adaptive power allocation (MBAPA) technique for nonlinear distortion mitigation in intermediate frequency over fiber (IFoF) systems. The technique allocates the spectral power of each IF band according to the required si
Externí odkaz:
https://doaj.org/article/c8550f0fb9544b6db6b2a1cb79c082f0