Email Delivery

Receive new posts as email.

Email address

Syndicate this site

RSS 0.91 | RSS 2.0
RDF | Atom
Podcast only feed (RSS 2.0 format)
Get an RSS reader
Get a Podcast receiver

Contact

About This Site
Contact Us
Privacy Policy

Search

Google

Web this site

January 2007
Sun Mon Tues Wed Thurs Fri Sat
  1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30 31      

Stories by Category

Administrative :: Administrative
Financial :: Financial
Future :: Future
Hardware :: Hardware Adapters ExpressCard PC Card/CardBus PCI Card Antennas Chips Gateways Gigabit Ethernet
MIMO :: MIMO Spatial multiplexing
Market :: Market Consumer Enterprise
Standards :: Standards 802.11n Draft N Task Group N
Video :: Video

Archives

December 2006 | November 2006 | October 2006 | September 2006 | August 2006 | July 2006 | June 2006 | May 2006 | April 2006 | March 2006 | February 2006 | January 2006 | December 2005 | November 2005 | October 2005 | September 2005 | August 2005 | July 2005 | June 2005 | May 2005 | April 2005 | March 2005 |

Recent Entries

Associated Press Suggests Wait on Draft N Purchase
Metalink Intros Dual-Band Draft N Chips
Gigabit Ethernet and 802.11n
Airgo's Draft 2.0 Claim
Intel Says 802.11n in 2007
Groupthink Hits Laptop Makers on N
Broadcom Adds Lenovo, Native Skype Support
SMC Introduces Draft N Products
ASUS Guarantees Draft N Upgrades to Final Ratified Version
ExtremeTech Tests Five Draft N/Pre-N Routers

Site Philosophy

This site operates as an independent editorial operation. Advertising, sponsorships, and other non-editorial materials represent the opinions and messages of their respective origins, and not of the site operator or JiWire, Inc.

Copyright

Entire site and all contents except otherwise noted © Copyright 2001-2006 by Glenn Fleishman. Some images ©2006 Jupiterimages Corporation. All rights reserved. Please contact us for reprint rights. Linking is, of course, free and encouraged.

Powered by
Movable Type

« Breaking News: 802.11n Draft 1.0 Approved | Main | Brinksmanship in 802.11n »

March 14, 2006

A Technical Grounding in MIMO

By Glenn Fleishman

EE Times offers a long tutorial in MIMO: This three-page online article spells out the various methods by which multiple antennas are used to achieve distance, robustness, and increase throughput by making use of multipath reflection, multiple spatial streams, and beam forming. For instance, MIMO could be used to increase distance through beam forming, which improves signal clarity to a particular receiver. This was the key technology underlying the Vivato switch, by the way.

Spatial multiplexing allows multiple streams of data to simultaneously use the same frequencies in the same space by following different spatial paths that a receiver can differentiate. Robustness can be achieved by sending the same data over multiple paths improving the chances of reception without error.

The writer concludes that MIMO will find its way into all RF designs because of the many ways in which it can improve the efficiency and utility of spectrum.

Posted by Glennf at March 14, 2006 1:49 PM

Categories: MIMO

Comments

Post a comment




Remember Me?