Zobrazeno 1 - 10
of 163
pro vyhledávání: '"Osamu Takyu"'
Publikováno v:
Sensors, Vol 24, Iss 8, p 2514 (2024)
Low-power wide-area (LPWA) is a communication technology for the IoT that allows low power consumption and long-range communication. Additionally, packet-level index modulation (PLIM) can transmit additional information using multiple frequency chann
Externí odkaz:
https://doaj.org/article/8fd298c9f3934ce7b0b11f489a706655
Publikováno v:
IEEE Access, Vol 11, Pp 12843-12857 (2023)
Establishing a highly accurate positioning of radio sources for radio wave monitoring and frequency spectrum sharing is attracting considerable attention. Because the positioning method generally requires specific processing of the position target, i
Externí odkaz:
https://doaj.org/article/859cdc2b3661474e8c36d3b4a7b50ae4
Publikováno v:
Sensors, Vol 23, Iss 6, p 3308 (2023)
In recent years, there have been increased demands for aggregating sensor information from several sensors owing to the spread of the Internet of Things (IoT). However, packet communication, which is a conventional multiple-access technology, is hind
Externí odkaz:
https://doaj.org/article/a1071658269f40fd9c51bc8240ad8168
Publikováno v:
IEEE Access, Vol 9, Pp 12601-12610 (2021)
The long range wide area network (LoRaWAN) is one of the enabling technologies for low power wide area (LPWA) networks. In LoRaWAN, a node transmits its packet to a gateway (GW) in an autonomous and decentralized manner. The quantity of data that can
Externí odkaz:
https://doaj.org/article/919b972152204bf6ac6b81cb9cccfa0a
Publikováno v:
IEEE Access, Vol 9, Pp 154938-154946 (2021)
The low-power wide area (LPWA) limits the access duration defined by the duty cycle (DC) to avoid mutual interference among the systems. Packet-level index modulation (PLIM) uses the frequency channel and the transmission timing of a packet as an inf
Externí odkaz:
https://doaj.org/article/73314f465bd249bfbed710226082b6ae
Publikováno v:
IEEE Access, Vol 9, Pp 93651-93661 (2021)
Owing to the recent research and development on the Internet-of-Things (IoT) and machine-to-machine (M2M) communication, wireless sensor networks have attracted considerable attention. Among these networks, low power wide area networks (LPWANs), whic
Externí odkaz:
https://doaj.org/article/9812daf50b2b4100af8f78d3ff2b9d5b
Publikováno v:
IEEE Access, Vol 7, Pp 44645-44658 (2019)
Applications related to the Internet of Things are widely diversified and require both low latency and the access of massive sensors to wireless sensor networks. In physical wireless parameter conversion sensor networks (PhyC-SN), a fusion center (FC
Externí odkaz:
https://doaj.org/article/747f190172bf4900bd2657cf18d926ad
Publikováno v:
IEEE Access, Vol 7, Pp 152126-152137 (2019)
The mutual interference among wireless nodes is a critical factor in the Internet-of-Things (IoT) era due to its dense deployment. Due to its large coverage area, wireless nodes may not be able to detect the on-going communication of other nodes in a
Externí odkaz:
https://doaj.org/article/bd7ed48389ea457d96434ecec5e9829c
Publikováno v:
Sensors, Vol 22, Iss 11, p 4140 (2022)
In terms of low power consumption and long-range communication—low-power wide-area networks (LPWAN) are suitable for wireless sensor networks. Long-range (LoRa) wireless communication is one of the standards of LPWAN. LoRa shares common frequency s
Externí odkaz:
https://doaj.org/article/f8b653129261499c97c01e2d3f6d1ae8
Autor:
Osamu Takyu, Shohei Fujii, Youhei Akimoto, Mai Ohta, Takeo Fujii, Fumihito Sasamori, Shiro Handa
Publikováno v:
International Journal of Distributed Sensor Networks, Vol 13 (2017)
Simultaneous data gathering is an application that exploits the unique advantages of wireless sensor networks. Because many sensor nodes access a channel, co-channel interference limits the number of nodes who can access it. To suppress co-channel in
Externí odkaz:
https://doaj.org/article/0c71781f3c5e477d89015d16e791e4d3