Results 61 to 70 of about 4,375 (140)

Modified state activation functions of deep learning-based SC-FDMA channel equalization system

open access: yesEURASIP Journal on Wireless Communications and Networking, 2023
The most important function of the deep learning (DL) channel equalization and symbol detection systems is the ability to predict the user’s original transmitted data. Generally, the behavior and performance of the deep artificial neural networks (DANNs)
Mohamed A. Mohamed   +5 more
doaj   +1 more source

Uplink Transmit Power Control for Single-Carrier Grouped FDMA with Iterative Multiuser Detection

open access: yesApplied Sciences, 2019
We consider an uplink power allocation scheme for single-carrier frequency-division multiple access (FDMA) with iterative multiuser detection, called single-carrier grouped FDMA (SC-GFDMA). SC-GFDMA is a non-orthogonal scheme in which several users share
Yong-Sang Cho   +2 more
doaj   +1 more source

Improving Energy Efficiency for IoT Communications in 5G Networks [PDF]

open access: yes, 2017
Increase in number of Internet of Things (IoT) devices is quickly changing how mobile networks are being used by shifting more usage to uplink transmissions rather than downlink transmissions.
Su, Gary
core   +1 more source

A Multistage Decision-Feedback Receiver Design for LTE Uplink in Mobile Time-Variant Environments

open access: yesInternational Journal of Antennas and Propagation, 2012
Single-carrier-frequency division multiple access (SC-FDMA) has recently become the preferred uplink transmission scheme in long-term evolution (LTE) systems.
Juinn-Horng Deng, Shu-Min Liao
doaj   +1 more source

Sum rates of asynchronous GFDMA and SC-FDMA for 5G uplink

open access: yesICT Express, 2015
The fifth generation (5G) of mobile communication envisions ultralow latency less than 1 ms for radio interface. To this end, frameless asynchronous multiple access may be needed to allow users to transmit instantly without waiting for the next frame ...
Woojin Park   +2 more
doaj   +1 more source

Performance Analysis of Fifth-Generation Cellular Uplink

open access: yes, 2015
Fifth-generation cellular networks are expected to exhibit at least three primary physical-layer differences relative to fourth-generation ones: millimeter-wave propagation, antenna-array directionality, and densification of base stations. In this paper,
Talarico, Salvatore   +2 more
core   +1 more source

Phase Noise Suppression Algorithm Based on Modified LLR Metric in SC-FDMA System

open access: yesJournal of Electrical and Computer Engineering, 2017
In single-carrier frequency-division multiple-access (SC-FDMA) receivers in the long-term evolution uplink, phase noise is one of the major radio-frequency front-end impairments that degrade system performance. To address this issue, we propose a new log-
Zijie Xu, Guangliang Ren
doaj   +1 more source

Joint Multi-Cell Resource Allocation Using Pure Binary-Integer Programming for LTE Uplink

open access: yes, 2014
Due to high system capacity requirement, 3GPP Long Term Evolution (LTE) is likely to adopt frequency reuse factor 1 at the cost of suffering severe inter-cell interference (ICI).
Cui, Qimei, Tao, Xiaofeng, Zhang, Tong
core   +1 more source

Low PAPR space frequency block coding for multiuser MIMO SC-FDMA systems: specific issues for users with different spectral allocations

open access: yesEURASIP Journal on Advances in Signal Processing, 2011
Single-carrier space frequency block coding (SC-SFBC) is an innovative mapping scheme suitable for implementing transmit diversity in single-carrier frequency division multiple access (SC-FDMA) systems.
Ciochina Cristina   +2 more
doaj  

Multi-User CFOs Estimation for SC-FDMA System Over Frequency Selective Fading Channels

open access: yesIEEE Access, 2018
Frequency synchronization in single-carrier frequency division multiple access (SC-FDMA) uplink system is a challenging task due to the presence of different carrier frequency offsets (CFOs) for different users.
Sushant Kumar, Sudhan Majhi, Chau Yuen
doaj   +1 more source

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