Results 31 to 40 of about 441,425 (328)

Linear Transceiver design for Downlink Multiuser MIMO Systems: Downlink-Interference Duality Approach

open access: yes, 2013
This paper considers linear transceiver design for downlink multiuser multiple-input multiple-output (MIMO) systems. We examine different transceiver design problems. We focus on two groups of design problems.
Bogale, Tadilo Endeshaw   +1 more
core   +1 more source

Robust Sum MSE Optimization for Downlink Multiuser MIMO Systems with Arbitrary Power Constraint: Generalized Duality Approach

open access: yes, 2012
This paper considers linear minimum meansquare- error (MMSE) transceiver design problems for downlink multiuser multiple-input multiple-output (MIMO) systems where imperfect channel state information is available at the base station (BS) and mobile ...
Bogale, Tadilo Endeshaw   +1 more
core   +1 more source

Precise Phase Transition of Total Variation Minimization

open access: yes, 2015
Characterizing the phase transitions of convex optimizations in recovering structured signals or data is of central importance in compressed sensing, machine learning and statistics.
Cai, Jian-Feng   +3 more
core   +2 more sources

MMSE-based beamforming techniques for relay broadcast channels [PDF]

open access: yes, 2013
We propose minimum mean square error (MMSE) based beamforming techniques for a multiantenna relay network, where a base station (BS) equipped with multiple antennas communicates with a number of single antenna users through a multiantenna relay.We ...
Cumanan, K   +3 more
core   +1 more source

Intelligent Reflecting Surface-Aided Joint Processing Coordinated Multipoint Transmission [PDF]

open access: yesIEEE Transactions on Communications, 2020
This article investigates intelligent reflecting surface (IRS)-aided multicell wireless networks, where an IRS is deployed to assist the joint processing coordinated multipoint (JP-CoMP) transmission from multiple base stations (BSs) to multiple cell ...
Meng Hua   +4 more
semanticscholar   +1 more source

Design of Sparse FIR Decision Feedback Equalizers in MIMO Systems Using Hybrid l1/l2 Norm Minimization and the OMP Algorithm

open access: yesSensors, 2018
In this paper, a novel scheme using hybrid l1/l2 norm minimization and the orthogonal matching pursuit (OMP) algorithm is proposed to design the sparse finite impulse response (FIR) decision feedback equalizers (DFE) in multiple input multiple output ...
Lihong Yu   +3 more
doaj   +1 more source

Pilot Optimization and Channel Estimation for Multiuser Massive MIMO Systems

open access: yes, 2014
This paper proposes novel pilot optimization and channel estimation algorithm for the downlink multiuser massive multiple input multiple output (MIMO) system with $K$ decentralized single antenna mobile stations (MSs), and time division duplex (TDD ...
Bogale, Tadilo Endeshaw, Le, Long Bao
core   +1 more source

Robust precoder design in MISO downlink based on quadratic channel estimation [PDF]

open access: yes, 2008
In [1], it has been proposed that channel estimates in quadratic form can be obtained at the base station by sending training sequences to the mobiles where the received signals are forwarded back to the base for channel estimation.
Ma, S, Ng, TS, Wong, KK, Zheng, G
core   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Reconfiguration of Optical-NFV Network Architectures Based on Cloud Resource Allocation and QoS Degradation Cost-Aware Prediction Techniques

open access: yesIEEE Access, 2020
The high time required for the deployment of cloud resources in Network Function Virtualization network architectures has led to the proposal and investigation of algorithms for predicting traffic or the necessary processing and memory resources. However,
Vincenzo Eramo   +3 more
doaj   +1 more source

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