Zobrazeno 1 - 10
of 366
pro vyhledávání: '"Bang Chul Jung"'
Publikováno v:
IEEE Access, Vol 12, Pp 35097-35108 (2024)
Recently, multi-hop flying ad hoc networks (FANETs) have received considerable attention because of their various advantages, such as ease of deployment, scalability, cost, and latency reduction. However, FANETs still encounter serious problems such
Externí odkaz:
https://doaj.org/article/06b85a38b2ca46ee9611ac280bf2ca0c
Publikováno v:
ICT Express, Vol 9, Iss 2, Pp 253-257 (2023)
We propose a novel cooperative space–time line code (C-STLC) scheme to improve performance of a relay-assisted internet of things (R-IoT). The proposed C-STLC operates with fully distributed manner, where each relay IoT device (RID) attempts to dec
Externí odkaz:
https://doaj.org/article/d5f9046b798040db80809a2ad279a510
Publikováno v:
ICT Express, Vol 8, Iss 4, Pp 485-489 (2022)
We propose a novel interference alignment (IA) technique with receive antenna partitioning (RAP) for simultaneous wireless information and power transfer (SWIPT)-enabled downlink fog radio access networks (F-RANs). The basic idea of the proposed sche
Externí odkaz:
https://doaj.org/article/2106d619c81f498ea37dd0b88818c008
Publikováno v:
ICT Express, Vol 8, Iss 3, Pp 419-423 (2022)
In this paper, we mathematically analyze bit-error rate (BER) and diversity order of physical-layer network coding (PNC) scheme in the two-way relay channel (TWRC) under the assumption of multiple antennas at relay node. We assume the quadrature phas
Externí odkaz:
https://doaj.org/article/bcd65ba960c0459384e0422de9d1cba1
Publikováno v:
Sensors, Vol 23, Iss 21, p 8938 (2023)
In this paper, we propose a novel simultaneous Correlative Interferometer (CI) technique that elaborately estimates the Direction of Arrival (DOA) of multiple source signals incident on an antenna array. The basic idea of the proposed technique is th
Externí odkaz:
https://doaj.org/article/9ad40e7d5a024b7bb159f60875062e1b
Publikováno v:
Electronics Letters, Vol 58, Iss 13, Pp 520-523 (2022)
Abstract In this letter, a novel multiple‐input multiple‐output transceiver technique, named space–time line coded spatial modulation (STLC‐SM) is proposed, where two modulation symbols are transmitted through one of the multiple transmit ant
Externí odkaz:
https://doaj.org/article/e818dadc093c48618220ebe09991e40c
Publikováno v:
IEEE Access, Vol 10, Pp 39555-39565 (2022)
To overcome the problems caused by the limited battery lifetime in multiple-unmanned aerial vehicle (UAV) wireless networks, we propose a hierarchical multi-agent reinforcement learning (RL) framework to maximize the energy efficiency (EE) of UAVs by
Externí odkaz:
https://doaj.org/article/f0387c824fe8446396682b86806e4a63
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 3, Pp 705-717 (2022)
We investigate the uplink non-orthogonal multiple access (NOMA)-based Internet-of-Things (IoT) networks, where each IoT device (station: STA) equipped with a single antenna exploits the constellation-rotated space-time line code (CR-STLC) to send sig
Externí odkaz:
https://doaj.org/article/5f5ce6b3166e4520a3cda83aecc59713
Publikováno v:
Sensors, Vol 23, Iss 5, p 2447 (2023)
Time-division multiple access (TDMA)-based medium access control (MAC) protocol has been widely used for avoiding access conflicts in wireless multi-hop ad hoc networks, where the time synchronization among wireless nodes is essential. In this paper,
Externí odkaz:
https://doaj.org/article/be6bd5fa72ac4abe916bea581fda3d9a
Publikováno v:
ETRI Journal, Vol 42, Iss 5, Pp 715-723 (2020)
AbstractRecently, to make the best use of limited and precious spectrum resources, spectrum sharing between satellite and cellular networks has received much interest. In this study, we mathematically analyze the success probability of a fixed (satel
Externí odkaz:
https://doaj.org/article/16704bb26559420bb0ae579d70017067