United Business Media EE Times


Search

HOMEMARKET INTELLIGENCE UNITFORUMSDESIGNNEW PRODUCTSCAREERSBLOGSCONTACTEVENTSSIGN UP!RSSMost Popular contentTrusted Sources

 


Ultrawideband wars
Print this article Email this article Reprints RSS Digital Edition

EE Times


MATHIAS_CRAIG

You've probably heard about the ongoing battle over the proposed 802.15.3a ultra-wideband (UWB) standard between Motorola and, so it seems, everyone else, in the form of the Multiband OFDM Alliance. I've spent time with both sides, and I've come to the common analyst-sensitive-to-politics conclusion that both sides make a good point.

Both proposals are impressive, both camps have technical credibility, both are peeved at one another and both, of course, claim technical superiority. And both would have us believe that all will be right in the universe if we all just get along. Ah, if it were only that easy — but it never is.

Having a single physical layer in any networking standard would be like having all human beings speak the same language: It's desirable, but it's not going to happen. In case the warring camps haven't noticed, many successful standards have multiple PHYs. The IEEE 802.3 group has seen the development of new PHYs throughout its entire history. And most people are surprised to learn that 802.11 has eight PHYs at the moment: the original DS and FH, IR (never implemented, as far as I know), .11b (CCK), .11a (OFDM) and three .11g modes (OFDM plus two optional modes I think everyone has forgotten by now). Add .11n, and that makes nine. And 802.11 is without question a highly successful standard that has served as the backbone of a vibrant, growing, exciting industry with hundreds of companies and products.

So, please, let's stop the nonsense about needing just one standard. Sure, it would be great. So would lower taxes and getting a live person when one calls corporate America to inquire as to why a given product doesn't seem to work as advertised.

We should all speak the same language, but we don't — and yet things seem mostly to work out, most of the time. That's as good as it gets, I'm afraid.

By the way, UWB is supposed to be good at operating under conditions of significant interference, including that from other UWB sources. In operation, signal degradation might not even be noticeable, and I think multimode implementations might even be the norm for a while.

Every other class of wireless system — LAN, MAN and WAN — is doing just fine, despite having multiple PHYs.

It's time for the market to decide. And what's so bad about that?

Craig J. Mathias is principal of Farpoint Group (Ashland, Mass.).





The views and opinions expressed in this column are strictly those of the author and should not be taken as an editorial position of EE Times or any of its other editors, publications or Web sites.


  Free Subscription to EE Times
First Name Last Name
Company Name Title
Email address
  Click here for your Free Subscription to EETimes Europe
 
CAREER CENTER
Looking for a new job?
SEARCH JOBS
SPONSOR

RECENT JOB POSTINGS
CAREER NEWS
Engineers take a bad year in stride
According to the findings of the 2009 EE Times Global Salary & Opinion Survey, generally, engineers are satisfied with their career choices.

For more great jobs, career related news, features and services, please visit EETimes' Career Center.


All White Papers »   

 
Education and
Learning


Learn Now:












Home | About | Editorial Calendar | Feedback | Subscriptions | Newsletter | Media Kit | Contact | Reprints|  RSS|   Digital|  Mobile
Network Websites
International
Network Features




All materials on this site Copyright © 2009 TechInsights, a Division of United Business Media LLC All rights reserved.
Privacy Statement | Terms of Service | About