Results 31 to 40 of about 86,321 (187)

Bidirectional resource scheduling algorithm for advanced long term evolution system

open access: yesEngineering Reports, 2020
The 5G long term evolution‐advanced (LTE‐A) system aims to offer unprecedent data rates, user experience, and minimal latency amongst the end users with the introduction of carrier aggregation (CA) technology.
Ravi Gatti, Shiva Shankar
doaj   +1 more source

Physical-Layer Security in Power-Domain NOMA Based on Different Chaotic Maps

open access: yesEntropy, 2023
Nonorthogonal multiple access (NOMA) is a relevant technology for realizing the primary goals of next-generation wireless networks, such as high connectivity and stability.
Mariam Abu Al-Atta   +3 more
doaj   +1 more source

Error Bounds for Uplink and Downlink 3D Localization in 5G mmWave Systems [PDF]

open access: yes, 2018
Location-aware communication systems are expected to play a pivotal part in the next generation of mobile communication networks. Therefore, there is a need to understand the localization limits in these networks, particularly, using millimeter-wave ...
Abhayapala, Thushara   +4 more
core   +2 more sources

Energy-Efficient Resource Allocation for Underlay Spectrum Sharing in Cell-Free Massive MIMO

open access: yesIEEE Access
Cell-free massive multiple-input-multiple-output (CF-mMIMO) networks incorporate a cell-free architecture with distributed antennas in a geographical area, and aim to deliver high data rates and support large numbers of users.
Zakir Hussain Shaik   +2 more
doaj   +1 more source

Optimal user selection and power allocation for revenue maximization in non‐orthogonal multiple access systems

open access: yesETRI Journal, 2019
A novel algorithm for joint user selection and optimal power allocation for Stackelberg game‐based revenue maximization in a downlink non‐orthogonal multiple access (NOMA) network is proposed in this study.
Sindhu Pazhayakandathil   +2 more
doaj   +1 more source

Desain dan Implementasi Duplekser dengan Metoda Pseudo-Interdigital untuk Uplink dan Downlink LTE

open access: yesJurnal Elektronika dan Telekomunikasi, 2016
Duplekser merupakan perangkat yang dapat mengisolasi receiver dari transmitter saat keduanya saling berbagi antena yang sama, digunakan agar komunikasi bisa berjalan secara full duplex. Ada dua metode transmisi duplex yaitu frequency division duplex (FDD)
Enceng Sulaeman   +2 more
doaj   +1 more source

Multi-UAV Assisted Multi-Tier Millimeter-Wave Cellular Networks for Hotspots With 2-Tier and 4-Tier Network Association

open access: yesIEEE Access, 2020
The evolution of the fifth-generation (5G)/ beyond 5G (B5G) mobile communication networks greatly depends on the seamless integration of terrestrial and sky networks over advanced multi-tier heterogeneous network (HetNet) infrastructure.
Pengshan Ji   +4 more
doaj   +1 more source

Transmission Cooperative Strategies for MIMO-OFDM Heterogeneous Networks [PDF]

open access: yesRadioengineering, 2015
Mobile traffic in cellular networks is increasing exponentially, mainly due to the use of data intensive services like video. One way to cope with these demands is to reduce the cell-size by deploying small-cells along the coverage area of the current ...
S.S. Ali   +3 more
doaj  

Joint User Scheduling and Power optimization in Full-Duplex Cells with Successive Interference Cancellation

open access: yes, 2017
This paper considers a cellular system with a full-duplex base station and half-duplex users. The base station can activate one user in uplink or downlink (half-duplex mode), or two different users one in each direction simultaneously (full-duplex mode).
Erkip, Elza   +2 more
core   +1 more source

Wireless downlink data channels [PDF]

open access: yesProceedings of the 9th annual international conference on Mobile computing and networking, 2003
We consider wireless downlink data channels where the transmission power of each base station is time-shared between a dynamic number of active users as in CDMA/HDR systems. We derive analytical results relating user performance, in terms of blocking probability and data throughput, to cell size and traffic density.
Bonald, Thomas, Proutière, Alexandre
openaire   +3 more sources

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