Results 91 to 100 of about 31,082 (236)
Downlink compressive channel estimation with support diagnosis in FDD massive MIMO
EURASIP Journal on Wireless Communications and Networking, 2018 Downlink channel state information (CSI) is critical in a frequency division duplexing (FDD) massive multiple-input multiple-output (MIMO) system. We exploit the reciprocity between uplink and downlink channels in angular domain and diagnose the supports
Wei Lu +3 more
doaj +1 more source
Modulation-mode and power-assignment for SVD-and GMD-assisted downlink MIMO systems
, 2010 Multiuser multiple-input multiple-output (MIMO) downlink (DL) transmission schemes experience both multiuser interference (MUI) as well as inter-antenna interference.
Ahrens, Andreas +2 more
core +1 more source
Small-cell network downlink interference suppression method
上海师范大学学报. 自然科学版, 2015 In order to control the level of interference among adjacent small-cells effectively,in this paper,we suppress the interference between adjacent small-cells through controlling the small-cell downlink transmission power.Meanwhile,we use a low complexity ...
ZHANG Daoxu, LUO Hanwen
doaj +1 more source
Remote downconversion with wavelength reuse for the radio/fiber uplink connection [PDF]
, 2006 The authors present a novel technology for uplink transmission in radio-over-fiber distribution systems. The technique employs remote downconversion of the uplink data to intermediate frequency (IF) in the base station (BS).
Barry, Liam P. +2 more
core +1 more source
Uplink impact analysis from TPC downlink enhancements
ICT Express, 2019 Slow downlink power control scheme of F-DPCH with TPC enhancements is reported to achieve the significant transmit power reduction in highly loaded cell scenario.
Gillyoung Jung, Yong Up Lee
doaj +1 more source
, 2011 In this contribution we jointly optimize the number of multiple-input multiple-output (MIMO) layers and the number of bits per symbol within an iteratively-detected multiuser MIMO downlink (DL) transmission scheme under the constraint of a given fixed ...
Ahrens, Andreas, Benavente Peces, César
core +1 more source
Optical High-Capacity Satellite Downlinks via High-Altitude Platform Relays
, 2007 Earth-observation (EO) satellite missions produce a large amount of data using high-resolution optical or radar sensors. During the last decades the amount of data has steadily increased due to improved sensor technologies with increased temporal ...
Florian Moll +13 more
core +1 more source
Robust MMSE Precoding Strategy for Multiuser MIMO Relay Systems with Switched Relaying and Side Information [PDF]
, 2013 In this work, we propose a minimum mean squared error (MMSE) robust base station (BS) precoding strategy based on switched relaying (SR) processing and limited transmission of side information for interference suppression in the downlink of multiuser ...
Yang, Lie-Liang +7 more
core +1 more source
, 2004 We address blind multiuser detection in a DS-CDMA downlink channel in the presence of carrier frequency offset. The synchronous users are separated by re-establishing orthogonality of their spreading sequences in a shared equaliser at the chip level. The
Weiss, S +5 more
core
Enhanced Handoff Scheme for Downlink-Uplink Asymmetric Channels in Cellular Systems
The Scientific World Journal, 2013 In the latest cellular networks, data services like SNS and UCC can create asymmetric packet generation rates over the downlink and uplink channels. This asymmetry can lead to a downlink-uplink asymmetric channel condition being experienced by cell edge ...
Sunghyun Cho, Ji-Su Kim, Jae-Hyun Kim
doaj +1 more source