Results 201 to 210 of about 737,606 (254)
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IEEE Transactions on Green Communications and Networking
Non-orthogonal multiple access (NOMA) and energy-harvesting (EH) relay have been envisioned as promising technologies in Narrowband Internet of Things (NB-IoT) networks to efficiently improve the spectral-energy efficiency of networks and the massive ...
Lijun Qian +3 more
semanticscholar +1 more source
Non-orthogonal multiple access (NOMA) and energy-harvesting (EH) relay have been envisioned as promising technologies in Narrowband Internet of Things (NB-IoT) networks to efficiently improve the spectral-energy efficiency of networks and the massive ...
Lijun Qian +3 more
semanticscholar +1 more source
A Wideband Sliding Digital-IF Quadrature Digital Transmitter for Multimode NB-IoT/BLE Applications
IEEE Journal of Solid-State CircuitsThis article proposes a sliding digital-intermediate frequency (IF) quadrature digital transmitter (Q-DTX) for multimode multiband narrowband Internet of Things/Bluetooth low-energy (NB-IoT/BLE) applications.
Chunxiao Hu +6 more
semanticscholar +1 more source
An Efficient Downlink Receiver Design for NB-IoT
2020 IEEE Wireless Communications and Networking Conference (WCNC), 2020As of the specification Release 13 completed by the 3rd Generation Partnership Project (3GPP) in June 2016, narrowband Internet-of-Things (NB-IoT) has attracted great attention in both academia and industry. Some new features were further specified in subsequent Releases 14 and 15. In light of these specifications, efficient downlink receiver design is
Shutao Zhang +5 more
openaire +1 more source
Evaluating the energy consumption savings at 450 MHz band for NB-IoT devices
IoTIn this paper, we empirically evaluate the energy consumption of Narrow-Band Internet of Things (NB-IoT) devices at emerging 450 MHz band targeted especially for critical communications. The evaluation was done at VTT’s private 5G and LoRaWAN networks by
O. Apilo, Tapio Rautio
semanticscholar +1 more source
Interference Analysis of Guardband NB-IoT System
2018 International Conference on Information and Communication Technology Convergence (ICTC), 2018Massive connectivity is one of the major goals of 5G mobile communications. The NB-IoT system achieves this goal using only a very narrow bandwidth. The NB-IoT system can also work together without affecting existing LTE systems. In this paper, we analyze the interferences of guardband NB-IoT system from the LTE system when they coexist.
Hyungjin Kim +2 more
openaire +1 more source
IEEE Internet of Things Journal
In an interference-limited 5G narrowband Internet of Things (NB-IoT) heterogeneous networks (HetNets), device-to-device (D2D) relaying technology can provide coverage expansion and increase network throughput for cell-edge NB-IoT users (NUE). However, as
Safiu A. Gbadamosi +2 more
semanticscholar +1 more source
In an interference-limited 5G narrowband Internet of Things (NB-IoT) heterogeneous networks (HetNets), device-to-device (D2D) relaying technology can provide coverage expansion and increase network throughput for cell-edge NB-IoT users (NUE). However, as
Safiu A. Gbadamosi +2 more
semanticscholar +1 more source
System-Level Simulation Framework for NB-IoT: Key Features and Performance Evaluation
IEEE Systems JournalNarrowband Internet of Things (NB-IoT) is a technology specifically designated by the 3 rd Generation Partnership Project (3GPP) to meet the explosive demand for massive machine-type communications (mMTC), and it is evolving to RedCap.
Shutao Zhang +7 more
semanticscholar +1 more source
Control Period Adaptation and Resource Allocation for Joint Uplink and Downlink in NB-IoT Networks
IEEE Internet of Things JournalNarrowband Internet of Things (NB-IoT) offers three coverage enhancement (CE) levels to serve massive machines in a large area. For each CE level, the base station (BS) configures control periods to determine the number of allocatable radio resources for
Ya-Ju Yu, You-Chiun Wang, C.H. Fan
semanticscholar +1 more source
Optimization of Random Access Channel in NB-IoT
IEEE Internet of Things Journal, 2018Narrowband Internet of Things is a new access technology introduced by 3GPP. This paper presents an analytical model to estimate the access success probability and average access delay of the random access channels by considering maximum number of preamble transmissions, size of backoff windows, and number of subcarriers in each coverage enhancement ...
Ruki Harwahyu +3 more
openaire +2 more sources
A Comprehensive Assessment of LoRaWAN and NB-IoT Performance Metrics Under Varied Payload Data Sizes
European Conference on Artificial IntelligenceInternet of Things (IoT) has revolutionized whole industries, simply because it has provided constant connectivity between devices that hitherto existed in isolation.
K. Al-Sammak +5 more
semanticscholar +1 more source