[FoRK] [IP] Re Ultrawideband returns from the grave! This time as a location play

Eugen Leitl eugen at leitl.org
Tue Oct 7 08:45:35 PDT 2014

----- Forwarded message from Dave Farber via ip <ip at listbox.com> -----

Date: Tue, 7 Oct 2014 05:26:28 -0400
From: Dave Farber via ip <ip at listbox.com>
To: ip <ip at listbox.com>
Subject: [IP] Re Ultrawideband returns from the grave! This time as a location play
Message-ID: <CAKx4trgx+Y94kr2mWGh6q5kKCMVjtExEuBr4hmgp0eM0jK9AGw at mail.gmail.com>
Reply-To: dave at farber.net

---------- Forwarded message ----------
From: *Krulwich* <krulwich at yahoo.com>
Date: Tuesday, October 7, 2014
Subject: [Dewayne-Net] Ultrawideband returns from the grave! This time as a
location play
To: "dave at farber.net" <dave at farber.net>, ip <ip at listbox.com>


The new generation of UWB is very different from the old. Old UWB was based
on OFDM, with the goal of high-speed transfer. New UWB is based on impulse
radio. Besides longer range and lower throughput, impulse radio directly
enables much more accurate location positioning, since the radio waves
themselves have a much sharper start and stop than narrowband radio waves.

I explain this here:

and show videos of demos of UWB from last year's Mobile World Congress here:

I don't think the question now is whether UWB will "beat out" Wi-Fi or BT,
but rather whether the goal of longer-range wireless or more-accurate
location positioning will make including UWB in devices worthwhile.


 *From:* Dave Farber via ip <ip at listbox.com
<javascript:_e(%7B%7D,'cvml','ip at listbox.com');>>
*To:* ip <ip at listbox.com <javascript:_e(%7B%7D,'cvml','ip at listbox.com');>>
*Sent:* Monday, October 6, 2014 9:12 PM
*Subject:* [IP] Ultrawideband returns from the grave! This time as a
location play

---------- Forwarded message ----------
From: "Dewayne Hendricks" <dewayne at warpspeed.com
<javascript:_e(%7B%7D,'cvml','dewayne at warpspeed.com');>>
Date: Oct 6, 2014 1:32 PM
Subject: [Dewayne-Net] Ultrawideband returns from the grave! This time as a
location play
To: "Multiple recipients of Dewayne-Net" <dewayne-net at warpspeed.com
<javascript:_e(%7B%7D,'cvml','dewayne-net at warpspeed.com');>>

Ultrawideband returns from the grave! This time as a location play.
By Stacey Higginbotham
Oct 6 2014

Zombie technology UWB returns from the dead in a slightly modified format
to offer incredibly granular location within a few inches for the internet
of things.

The dead walk among us, and they are apparently shipping silicon.
Ultrawideband, a radio technology that uses unlicensed spectrum to send
massive files short distances, is back in a slightly different form, hoping
this time to provide location data for the internet of things.
Ultrawideband or UWB, was pushed in the early aughts as a way to wirelessly
dock a monitor or TV to a computer, but because of infighting in the
standards-setting committee and international spectrum allocation issues,
it never got very far.

A half of dozen or so startups raised venture capital to build UWB chips
and most of those were sold off and the standard itself was taken over by
the Bluetooth Special Interest Group. But Decawave, a company based in
Dublin, Ireland is now using UWB tech to offer granular, indoor location
data. Decawave, which was formed in 2004 is set to ship about a million UWB
radios this year and hopes to hit the 5 million mark in 2015 according to
Mickael Viot, marketing manager at Decawave.

He claims that UWB can offer location data that is accurate within 10
centimeters to about 30 centimeters, which makes sense given that the
radios only transmit a signal a very short distance. Customers in the
industrial worldand automotive are already using the technology, and a
smart home customer is also looking at it to provide detailed tracking
information for lost items via a stick-on tag.

Using UWB can offer higher data rates than Bluetooth Low Energy, and Viot
claims that the modifications to the silicon that Decawave offers make for
a chip that is still power-efficient. Right now, the form factor for the
silicon is a bit large, but the next generation coming in 2015 will shrink
the silicon and packaging to a more consumer-friendly size.


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