12-11-2012, 05:13 PM
Performance Comparison of Linear Detectors for MIMO System
Performance Comparison.ppt (Size: 702.5 KB / Downloads: 28)
Abstract
Several approaches have recently been proposed for the efficient optimum or approximate solution of the detection problem in multiple-input multiple-output transmission systems. These are, however, difficult to compare.
In the present work we briefly offer a way to see the tradeoff between complexity and the achievable power efficiency using “complexity power diagrams”.
Introduction to MIMO
Multiple-input, multiple-output (MIMO), where several transmit antennas simultaneously send different data streams
MIMO can be seen as the extended concept of space-division multiple access (SDMA) which allows a terminal to transmit (or receive) signal to (or from) multiple users in the same band simultaneously.
Motivation
Future mobile applications include
Mobile TV
High Speed Internet
Future wireless systems need to provide
High Data Rate
High Quality of Service (QoS)
Key challenges
Hostile propagation environment
Bandwidth is a limited resource
Way to overcame these challenges
Multiple-Input multiple-output (MIMO) systems
Advantages of MIMO
High data rate wireless communications links with transmission
Provide high speed links that still offer good Quality of Service (QoS)
Increases in data throughput and link range without additional bandwidth or increased transmit power.
Summary/Conclusions
MIMO Systems are getting us closer to the 1Gbps landmark.
At the same time, they provide reliable communications.
Developing efficient network protocols for a MIMO physical layer is an area of open research