Results 71 to 80 of about 4,375 (140)

A Joint Modulation-Coding Scheme and Resource Allocation in LTE Uplink

Elektronika ir Elektrotechnika, 2020
In Long Term Evolution (LTE) Resource Allocation Algorithms (RAAs) are an area of work where researchers are seeking to optimize the efficient use of scarce radio resources.
Amado Gutierrez, Victor Rangel, Javier Gomez, Robert M. Edwards, David H. Covarrubias   +4 more
doaj   +1 more source

SCMA Codebook Design

, 2014
Multicarrier CDMA is a multiple access scheme in which modulated QAM symbols are spread over OFDMA tones by using a generally complex spreading sequence. Effectively, a QAM symbol is repeated over multiple tones.
Baligh, Hadi, Bayesteh, Alireza, Nikopour, Hosein, Taherzadeh, Mahmoud   +3 more
core   +1 more source

Joint RRH-Association, Sub-Channel Assignment and Power Allocation in Multi-Tier 5G C-Rans

IEEE Access, 2018
Multi-tier cloud-radio access networks (C-RANs) have been suggested as a promising network model in fifth generation wireless networks to provide high data rate, high spectral efficiency, and high energy efficiency at low cost.
Sher Ali, Ayaz Ahmad, Razi Iqbal, Sajid Saleem, Tariq Umer   +4 more
doaj   +1 more source

Security-Enhanced SC-FDMA Transmissions Using Temporal Artificial-Noise and Secret Key Aided Schemes

IEEE Access, 2019
We investigate the physical-layer security of uplink single-carrier frequency-division multiple-access (SC-FDMA) systems. Multiple users, Alices, send confidential messages to a common legitimate base-station, Bob, in the presence of an eavesdropper, Eve.
Mohamed F. Marzban, Ahmed El Shafie, Naofal Al-Dhahir, Ridha Hamila   +3 more
doaj   +1 more source

Sparsity Enhanced Decision Feedback Equalization

, 2011
For single-carrier systems with frequency domain equalization, decision feedback equalization (DFE) performs better than linear equalization and has much lower computational complexity than sequence maximum likelihood detection. The main challenge in DFE
Ilic, Jovana, Strohmer, Thomas
core   +1 more source

Network Lifetime Maximization for Cellular-Based M2M Networks

, 2017
High energy efficiency is critical for enabling massive machine-type communications (MTC) over cellular networks. This work is devoted to energy consumption modeling, battery lifetime analysis, lifetime-aware scheduling and transmit power control for ...
Azari, Amin, Miao, Guowang
core   +1 more source

Enabling Disaster Resilient 4G Mobile Communication Networks

, 2014
The 4G Long Term Evolution (LTE) is the cellular technology expected to outperform the previous generations and to some extent revolutionize the experience of the users by taking advantage of the most advanced radio access techniques (i.e. OFDMA, SC-FDMA,
Gomez, Karina, Goratti, Leonardo, Rasheed, Tinku, Reynaud, Laurent   +3 more
core   +1 more source

Power-Efficient Radio Resource Allocation for Low-Medium -Altitude Aerial Platform Based TD-LTE Networks

, 2012
In order to provide an increased capacity, throughput and QoS guarantee for terrestrial users in emergency scenarios, a low-medium-altitude aerial platform based time-division-duplex long term evolution (TD-LTE) system referred to as Aerial LTE, is ...
Hanzo, Lajos, Li, Xiaohui, Zhang, Chi, Zhang, Hailin, Zhao, Liqiang   +4 more
core   +1 more source

Performansi Single Carrier Frequency Division Muliple Access Pada Teknologi Radio Over Fiber [PDF]

, 2013
Radio over Fiber (RoF) adalah teknologipenggabungan antara sistem kabel dan nirkabel, dimanasisi nirkabel terletak pada pangiriman sinyal radio daribase station, sedangkan kabel terletak pada pengirimannyamelalui serat optik.
Dr-Ing. Onny Setyawati, ST., MT., Y. Reza Angga Sukma., Ir. Erfan Achmad Dahlan, MT
core  

Reappraisal of arterial anatomy of thumb. [PDF]

Anat Cell Biol, 2022
Gnanasekaran D, Veeramani R, Karuppusamy A.   +2 more
europepmc   +1 more source