Results 51 to 60 of about 33,097 (233)
International Journal of Satellite Communications and Networking, Volume 44, Issue 1, Page 73-88, January/February 2026.The potential gains of NOMA were evaluated in a satellite system with heterogeneous receivers, after considering the use of specific DVB‐S2X MODCODs, along with the impact of non‐linearities. It was concluded that a judicious power allocation in NOMA, jointly optimized with the IBO of the PAs, can yield significant sum‐rate gains.
Tomás Ramírez, Carlos Mosquera
wiley +1 more source
Optimal Linear Precoding for Indoor Visible Light Communication System
, 2017 Visible light communication (VLC) is an emerging technique that uses light-emitting diodes (LED) to combine communication and illumination. It is considered as a promising scheme for indoor wireless communication that can be deployed at reduced costs ...
Alouini, Mohamed-Slim +3 more
core +1 more source
Precoder and precoding method in a multi-antenna system
, 2012 A precoder and a precoding method in a multiuser multi-antenna system are provided. The precoder includes a channel checker for determining a DownLink (DL) channel condition of terminals in a service coverage area, a pre-compensator for pre-compensating, for channel distortion, signals to be sent to the terminals when a nonlinear algorithm is selected ...
Robert W. Heath, Jr. +4 more
openaire +2 more sources
International Journal of Satellite Communications and Networking, Volume 44, Issue 1, Page 17-33, January/February 2026.In this paper, we investigate the application of signal‐to‐leakage‐plus‐noise ratio (SLNR) beamforming to low Earth orbit non‐terrestrial networks. The SLNR criterion aims at maximizing the received desired signal power for each user while minimizing the overall interference power caused by each user to all other co‐channel receivers. We show that such
M. Rabih Dakkak +3 more
wiley +1 more source
International Journal of Satellite Communications and Networking, Volume 44, Issue 1, Page 47-59, January/February 2026.The performance limitation in multiple‐input multiple‐output (MIMO) feeder links due to time and phase misalignment of the ground stations is investigated. Time and phase distribution over optical fiber is considered as an approach to achieve the synchronization requirements.
Eriserdi Mollaymeri +2 more
wiley +1 more source
Waveforms for the Massive MIMO Downlink: Amplifier Efficiency, Distortion and Performance
, 2015 In massive MIMO, most precoders result in downlink signals that suffer from high PAR, independently of modulation order and whether single-carrier or OFDM transmission is used. The high PAR lowers the power efficiency of the base station amplifiers.
Eriksson, Thomas +2 more
core +2 more sources
Spectrally Precoded OFDM [PDF]
IEEE Transactions on Communications, 2006 By bilinearly transforming the rectangularly pulsed multicarrier basis signals, new basis sets containing full-response continuous basis signals are developed for constructing spectrally efficient orthogonal frequency-division multiplexing (OFDM) signals with or without cyclic prefix (CP) or zero padding (ZP).
openaire +1 more source
5G new radio multiuser precoding in geostationary satellite networks
International Journal of Satellite Communications and Networking, Volume 44, Issue 1, Page 60-72, January/February 2026.This work evaluates the standardized 5G new radio codebooks for closed‐loop multiuser precoding in GEO multibeam scenarios and derives a list of recommended 3GPP standard modifications for a proper support to GEO mission needs. Summary The multiuser precoding procedures standardized by the 3rd Generation Partnership Project (3GPP) for new radio (NR ...
Xavier Artiga, Miguel Ángel Vázquez
wiley +1 more source
Spatially Sparse Precoding in Millimeter Wave MIMO Systems
, 2013 Millimeter wave (mmWave) signals experience orders-of-magnitude more pathloss than the microwave signals currently used in most wireless applications.
Abu-Surra, Shadi +4 more
core +1 more source
Efficient Gauss-Seidel Precoding with Parallel Calculation in Massive MIMO Systems [PDF]
, 2021 Hyunsun Hwang +4 more
openalex +1 more source