3 years ago

Overview of MIMO systems

Overview of MIMO systems

1 Presentation

1 Presentation Multiple-Input Multiple-Output (MIMO) Wireless Systems 1.1 What are MIMO systems ? • A MIMO system consists of several antenna elements, plus adaptive signal processing, at both transmitter and receiver • First introduced at Stanford University (1994) and Lucent (1996) • Exploit multipath instead of mitigating it SMARAD / Radio Laboratory 3 1 Presentation 1.2 Wireless channels limitations Wireless transmission introduces: Fading: multiple paths with different phases add up at the receiver, giving a random (Rayleigh/Ricean) amplitude signal. ISI:multiple paths come with various delays, causing intersymbol interference. CCI: Co-channel users create interference to the target user Noise: electronics suffer from thermal noise, limiting the SNR. SMARAD / Radio Laboratory 4

1 Presentation Wireless channels limitations : summary SMARAD / Radio Laboratory 5 1 Presentation 1.3 MIMO Benefits : • higher capacity (bits/s/Hz) (spectrum is expensive; number of base stations limited) • better transmission quality (BER, outage) • Increased coverage • Improved user position estimation Due to : Spatial multiplexing gain : Capacity gain at no additional power or bandwidth consumption obtained through the use of multiple antennas at both sides of a wireless radio link Diversity gain : Improvement in link reliability obtained by transmitting the same data on independently fading branches Array gain Interference reduction SMARAD / Radio Laboratory 6

GS1 System overview pdf - GS1 UK
Solution overview - Insight Integrated Systems
System overview VISOCALL IP.
Outage Management System Overview
Overview - National University System
Systemic Lupus Erythematosus Overview - The Lupus Initiative
System Overview - Amazon Web Services
System Overview Brochure - Carlo Gavazzi
IMS Overview - Intelligent Manufacturing Systems
Overview of wiring duct systems
HPC Systems Overview - LinkSCEEM
Gel Documentation Systems Overview
Overview of the Cardiovascular System - Saint Louis University ...
Overview of the universe, our solar system and the ... - APRSAF
product overview pipeline systems - Harwal Group of Companies
CICAS Program Overview - Traffic Signal Systems Committee
Alaska Aviation System Plan (AASP) Overview
Amal Overview Catalogue - Safety Systems UK Ltd
SH Series Overview Brochure - Crane Pumps & Systems
Marston Overview Catalogue - Safety Systems UK Ltd
Boiler Controls and Systems - an overview - Spirax Sarco
Bailey Overview Catalogue - Safety Systems UK Ltd
Product Overview Ignition Systems - Smitsvonk Holland BV
"MIMO Systems Revisited," Dr. R. Müller, Professor, Norwegian
Systems Overview