MIMO Technology for Advanced Wireless Local Area Networks
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.pdf   10.1.1.70.4144.pdf (Size: 158.56 KB / Downloads: 302)
MIMO Technology for
Advanced Wireless Local Area Networks




Jeffrey M. Gilbert
Atheros Commications, Inc.
529 Almanor Ave
Sunnyvale, CA 94085
(1) 408-773-5261
Won-Joon Choi
Atheros Commications, Inc.
529 Almanor Ave
Sunnyvale, CA 94085
(1) 408-773-5334
Qinfang Sun
Atheros Commications, Inc.
529 Almanor Ave
Sunnyvale, CA 94085
(1) 408-773-5311



abstract

This paper first gives a brief introduction to Multiple Input Multiple Output (MIMO) wireless communication systems. Various architectures of MIMO systems and corresponding features are discussed, including those proposed for the IEEE 802.11n standard. The impact on chip area and required data processing rates is then presented.
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09-02-2012, 01:06 PM

MIMO Technology for Advanced Wireless Local Area Networks



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Wireless LAN Technology Advances



How can this growth continue?
Previous advances have been limited to a single transmitting and receiving radio
The next generation exploits multiple parallel radios using revolutionary class of techniques called MIMO (Multiple Input Multiple Output) to send information farther and faster


Wireless Fundamentals I

In order to successfully decode data, signal strength needs to be greater than noise + interference by a certain amount
Higher data rates require higher SINR (Signal to Noise and Interference Ratio)
Signal strength decreases with increased range in a wireless environment


Wireless Fundamentals II
Ways to increase data rate:
Conventional single tx and rx radio systems
Increase transmit power
Subject to power amplifier and regulatory limits
Increases interference to other devices
Reduces battery life
Use high gain directional antennas
Fixed direction(s) limit coverage to given sector(s)
Use more frequency spectrum
Subject to FCC / regulatory domain constraints
Advanced MIMO: Use multiple tx and / or rx radios!

MIMO Wireless Systems

Multiple Input Multiple Output (MIMO) systems with multiple parallel radios improve the following:

Outages reduced by using information from multiple antennas
Transmit power can be increased via multiple power amplifiers
Higher throughputs possible
Transmit and receive interference limited by some techniques


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13-02-2012, 09:56 AM

to get information about the topic Mimo technology full report ,ppt and related topic refer the link bellow

topicideashow-to-mimo-technology-for-advanced-wireless-local-area-networks

topicideashow-to-mimo-technology--9226?page=3

topicideashow-to-mimo-technology--9226?pid=22076
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