Zobrazeno 1 - 10
of 108
pro vyhledávání: '"Sung Sik Nam"'
Publikováno v:
Applied Sciences, Vol 14, Iss 8, p 3246 (2024)
In this paper, a set of cooperative non-orthogonal multiple access (NOMA) transmission schemes is proposed, in which two half-duplex relaying user terminals (UTs) successively deliver the AP signals toward two NOMA UTs. The successive relaying (SR) o
Externí odkaz:
https://doaj.org/article/0ba754f973954877bfe8459961d95622
Publikováno v:
Mathematics, Vol 11, Iss 20, p 4273 (2023)
From the perspective of wireless communication, as communication systems become more complex, order statistics have gained increasing importance, particularly in evaluating the performance of advanced technologies in fading channels. However, existin
Externí odkaz:
https://doaj.org/article/98eeb31afec641b4810b03fe8b5ed461
Publikováno v:
Applied Sciences, Vol 13, Iss 12, p 6978 (2023)
With the rapid development of wireless communication technologies, free-space optical (FSO) communication has gained much attention in recent years. The FSO technology, which is usually used for communication in terrestrial environments, is expanding
Externí odkaz:
https://doaj.org/article/1d57b137c07040e7b23c0ff3d436332a
Publikováno v:
IEEE Access, Vol 9, Pp 95346-95359 (2021)
In this paper we propose an anlge-of-arrival (AoA) estimation technique using the monopulse signal to achieve a reliable link for the ground-to-unmanned aerial vehicle (UAV) or UAV-to-UAV. We first find the exact statistical characteristics of the mo
Externí odkaz:
https://doaj.org/article/f29fbea63d634beab55872f15b6a82cd
Publikováno v:
Applied Sciences, Vol 13, Iss 1, p 386 (2022)
In this paper, a set of transmission schemes are proposed for the delivery of multicast (MC) signals, in which an intelligent reflecting surface (IRS) assists the transmission from an access point (AP) to a set of multicast users. It is known that th
Externí odkaz:
https://doaj.org/article/59badd09b4084c2c9b4d00b20f8cd261
Publikováno v:
Applied Sciences, Vol 12, Iss 23, p 12485 (2022)
With the increase in the complexity of communication systems, order statistics have become increasingly significant in performance evaluation, especially for advanced diversity techniques over fading channels. However, existing analytical approaches
Externí odkaz:
https://doaj.org/article/b997588fe3674522b469e9e0e7f13864
Publikováno v:
IEEE Access, Vol 8, Pp 140533-140545 (2020)
In this paper, we propose cumulative distribution function (CDF)-based multiuser scheduling (CMS) for downlink non-orthogonal multiple access (NOMA) to accommodate a massive number of IoT devices over limited radio resources and statistically analyze
Externí odkaz:
https://doaj.org/article/9afd1ffa567a42b1a862e7fedf3561a7
Publikováno v:
IEEE Access, Vol 7, Pp 2148-2160 (2019)
In this paper, via the exact closed-form expressions, we statistically investigate the symbol-error-rate performance of the limited feedback-based adaptive threshold-based relay selection (ATRS) scheme under multiple type II relay environments. Our a
Externí odkaz:
https://doaj.org/article/fc7ccd76caaa42a5a717dc591b1a10c6
Publikováno v:
IEEE Access, Vol 7, Pp 139773-139786 (2019)
In this paper, we introduce a systematic and unified stochastic tool to determine the joint statistics of partial products of ordered random variables (RVs). With the proposed approach, we can systematically obtain the desired joint statistics of any
Externí odkaz:
https://doaj.org/article/059f6235a271489e8626f3d250a262b6
Publikováno v:
IEEE Access, Vol 6, Pp 6455-6463 (2018)
In this paper, we propose an iterative relay scheduling with hybrid ARQ (IRS-HARQ) scheme, which realizes fast jump-in/successive relaying and subframe-based decoding under the multiple user equipment (UE) relay environments applicable to the next-ge
Externí odkaz:
https://doaj.org/article/fa89f45f27694ae4a0389e355a94b308