Zobrazeno 1 - 10
of 185
pro vyhledávání: '"Yeon Ho Chung"'
On the performance of outage probability in cognitive NOMA random networks with hardware impairments
Publikováno v:
Journal of Information and Telecommunication, Vol 8, Iss 3, Pp 325-348 (2024)
The performance of the cognitive non-orthogonal multiple access (NOMA) systems with random locations is examined in the present paper. More precisely, the positions of the secondary receivers (SRs) are randomly distributed inside a disk with the cent
Externí odkaz:
https://doaj.org/article/a3033a8a90c447de8fe04837fc2a7743
Autor:
Sudhanshu Arya, Yeon Ho Chung
Publikováno v:
ICT Express, Vol 9, Iss 6, Pp 1013-1018 (2023)
By leveraging the characteristics of both quantum encoding and classical data channel, we present a unique and novel multiuser optical communication system that utilizes fascinating properties of the structured light for information transmission. Spe
Externí odkaz:
https://doaj.org/article/6386c63e1a734d7cb053a3f546ab71c3
Autor:
Prakriti Saxena, Yeon Ho Chung
Publikováno v:
ICT Express, Vol 9, Iss 3, Pp 466-472 (2023)
In this work, we investigate the performance of an all-optical dual hop free-space optical (FSO) communication system using an unmanned aerial vehicle (UAV) as a relay and utilizing a reconfigurable optical intelligent reflecting surface (ROIRS) to i
Externí odkaz:
https://doaj.org/article/529d71d329704a6ea3b2fc95134c5ffc
Autor:
Prakriti Saxena, Yeon Ho Chung
Publikováno v:
ICT Express, Vol 9, Iss 3, Pp 439-445 (2023)
In this paper, we investigate the performance of a downlink non-orthogonal multiple access (NOMA) based visible light communication (VLC) system. We consider that the users are randomly located following a binary Poisson point (BPP) Process. The perf
Externí odkaz:
https://doaj.org/article/81c92a48be6d4b2fbe7de72ffed9a9af
Publikováno v:
ICT Express, Vol 7, Iss 3, Pp 361-365 (2021)
In this paper, we address the problem of joint transmit beamforming and power control for a multiuser multiple-input single-output (MISO) indoor optical downlink channel. We adopt a shot-noise limited Poisson channel with transmitting signals subject
Externí odkaz:
https://doaj.org/article/8c3bc11519f6442a9b771f7ce0080dd3
Autor:
Sudhanshu Arya, Yeon Ho Chung
Publikováno v:
IEEE Photonics Journal, Vol 12, Iss 6, Pp 1-12 (2020)
In multiuser optical wireless communications (OWC), the multiuser interference becomes significant as the number of users increases. This would lead to a poor quality of service with a low signal-to-interference-plus-noise-ratio (SINR) or even a fail
Externí odkaz:
https://doaj.org/article/c225c6ba3d8b42f9922909f2e3e3dc92
Autor:
Sudhanshu Arya, Yeon Ho Chung
Publikováno v:
IEEE Photonics Journal, Vol 12, Iss 5, Pp 1-18 (2020)
In this letter, we present a new real-time blind signal detection technique for indoor optical communications using a supervised learning framework in an artificial neural network (ANN). We model the optical channel as a time-varying doubly-stochasti
Externí odkaz:
https://doaj.org/article/e3eb4ea63ad74dfe9e70582c897b5098
Autor:
Sudhanshu Arya, Yeon Ho Chung
Publikováno v:
IEEE Access, Vol 7, Pp 58314-58323 (2019)
One of the primary challenges in multi-user free space optical wireless systems is to periodically sense the optical frequency spectrum at the receiver to identify whether the channel is occupied by other transceiver pairs in order to avoid interfere
Externí odkaz:
https://doaj.org/article/c36da7d85f59436984ee0784bc4c0d87
Autor:
Sudhanshu Arya, Yeon Ho Chung
Publikováno v:
IEEE Access, Vol 7, Pp 116734-116740 (2019)
In this paper, a high-performance and high-capacity ultraviolet (UV) communication system is presented using orbital angular momentum (OAM) of the Laguerre-Gaussian beam. It is well known that the Laguerre-Gaussian beams propagating along the same ax
Externí odkaz:
https://doaj.org/article/36ed82a5ee7d41f59dd204d31cec4e04
Publikováno v:
IEEE Photonics Journal, Vol 8, Iss 2, Pp 1-8 (2016)
Downlink visible light communication (VLC) using a mobile phone camera is presented. The proposed scheme consists of an 8 × 8 light-emitting diode (LED) array for data transmission and eight white LEDs for an adequate level of illumination. The whit
Externí odkaz:
https://doaj.org/article/b8d2564bc0c347e19cb4fd33b6877042