Results 91 to 100 of about 27,401 (218)

LTE physical layer: Performance analysis and evaluation

open access: yesApplied Computing and Informatics, 2019
3GPP LTE was proposed by cooperation between groups of telecommunications consortium named as 3rd Generation Partnership Project to improve the Universal Mobile Telecommunications System (UMTS) standard. It supports up to 300 Mbps of data transmission in
H. Mousavi   +3 more
doaj   +1 more source

Advanced multiple access concepts in mobile satellite systems [PDF]

open access: yes
Some multiple access strategies for Mobile Satellite Systems (MSS) are discussed. These strategies were investigated in the context of three separate studies conducted for the International Maritime Satellite Organization (INMARSAT) and the European ...
Ananasso, Fulvio
core   +1 more source

System level comparison of FDMA vs. CDMA (under conference guideline constraint) [PDF]

open access: yes
The margin that is required to mitigate the near-far problem in a Code Division Multiple Access (CDMA) mobile satellite system is determined by the radio-propagation model selected, the distribution of the users in clear and shadowed environments, and ...
Renshaw, Ken
core   +1 more source

Joint User Scheduling and MU-MIMO Hybrid Beamforming Algorithm for mmWave FDMA Massive MIMO System

open access: yesInternational Journal of Antennas and Propagation, 2016
The large bandwidth and multipath in millimeter wave (mmWave) cellular system assure the existence of frequency selective channels; it is necessary that mmWave system remains with frequency division multiple access (FDMA) and user scheduling. But for the
Jing Jiang, Deting Kong
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

Circuit-switch architecture for a 30/20-GHz FDMA/TDM geostationary satellite communications network [PDF]

open access: yes
A circuit switching architecture is described for a 30/20 GHz frequency division, multiple access uplink/time division multiplexed downlink (FDMA/TDM) geostationary satellite communications network.
Ivancic, William D.
core   +1 more source

A generalized transmultiplexer and its application to mobile satellite communications [PDF]

open access: yes
A generalization of digital transmultiplexer technology is presented. The proposed method can realize transmultiplexer (TMUX) and transdemultiplexer (TDUX) filter banks whose element filters have bandwidths greater than the channel spacing frequency ...
Ichiyoshi, Osamu
core   +1 more source

First-hop-quality-aware dynamic resource allocation for amplify-and-forward opportunistic relaying assisted SC-FDMA

open access: yes, 2012
In this paper we exploit the benefits of the diversity gains arising from a cluster of opportunistic relays (OR) and from the independently fading subcarriers of multiple users.
Hanzo, Lajos   +2 more
core   +1 more source

Destination-directed, packet-switching architecture for 30/20-GHz FDMA/TDM geostationary communications satellite network [PDF]

open access: yes
A destination-directed packet switching architecture for a 30/20-GHz frequency division multiple access/time division multiplexed (FDMA/TDM) geostationary satellite communications network is discussed. Critical subsystems and problem areas are identified
Ivancic, William D.   +1 more
core   +1 more source

Performance of DA/FDMA architecture proposed for MSS [PDF]

open access: yes
The system architecture proposed for the Mobile Satellite Service (MSS) by the National Aeronautics and Space Administration (NASA)/JPL is presented. The demand assigned Frequency Division Multiple Access (FDMA) scheme is described, and results for the ...
Dessouky, Khaled   +2 more
core   +1 more source

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