Embedded Systems Conference
Breaking News
Comments
Newest First | Oldest First | Threaded View
AZskibum
User Rank
Author
Re: Sounds like one does in RF modulation
AZskibum   12/11/2013 12:10:53 AM
NO RATINGS
I was thinking the same thing -- this is what RF digital comms engineers have done for many decades. The cleverness of their technique appears to be the generation of a perfect "picket fence" of rectangular spectra in the frequency domain -- which inherently results in raised cosine pulses in the time domain. I have to agree with the comment from the researcher, that it's hard to believe nobody thought of this before.

daleste
User Rank
Author
Re: great research
daleste   12/10/2013 9:56:51 PM
NO RATINGS
A 25% increase isn't the same as 10X.  Thanks for the feedback.  Guess we have to be careful of believing everything we read.

TanjB
User Rank
Author
Re: great research
TanjB   12/10/2013 3:15:21 PM
NO RATINGS
The original paper

http://www.nature.com/ncomms/2013/131204/ncomms3898/full/ncomms3898.html

makes no claim of 10x.  That was added by the University PR.  You really, really have to learn to avoid repeating the PR spam.

The paper quantifies about a 25% gain relative to OFDM found in a related investigation of Sinc pulses, but does not say they achieved that.

Bert22306
User Rank
Author
Sounds like one does in RF modulation
Bert22306   12/9/2013 7:46:15 PM
NO RATINGS
If I read this correctly, the idea of shaping the optical symbols to cram as many symbols/sec as possible is what RF engineers have done for a long time. Using smooth shapes, a typical example being the "raised cosine curve," you can reduce the bandwidth of the medium, for any given data carrying capacity.

daleste
User Rank
Author
great research
daleste   12/9/2013 7:16:28 PM
NO RATINGS
Increasing bandwidth with a transmitter change will be great for the industry.  Not having to replace the optical medium could be an easy upgrade path for existing deployments.  Thanks for the work and learning.



Most Recent Comments
mjlinden
 
MWagner_MA
 
Denis.Giri
 
RachelElla
 
RachelElla
 
Bigmarketresearch
 
Bigmarketresearch
 
Krutsch
 
SNORDQUIST662
Most Recent Messages
4/1/2015
8:25:34 AM
Top Comments of the Week
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

My Mom the Radio Star
Max Maxfield
Post a comment
I've said it before and I'll say it again -- it's a funny old world when you come to think about it. Last Friday lunchtime, for example, I received an email from Tim Levell, the editor for ...

Bernard Cole

A Book For All Reasons
Bernard Cole
3 comments
Robert Oshana's recent book "Software Engineering for Embedded Systems (Newnes/Elsevier)," written and edited with Mark Kraeling, is a 'book for all reasons.' At almost 1,200 pages, it ...

latest comment mjlinden Thanks for your input!
Martin Rowe

Leonard Nimoy, We'll Miss you
Martin Rowe
5 comments
Like many of you, I was saddened to hear the news of Leonard Nimoy's death. His Star Trek character Mr. Spock was an inspiration to many of us who entered technical fields.

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
16 comments
As every developer knows, there are the paper specifications for a product design, and then there are the real requirements. The paper specs are dry, bland, and rigidly numeric, making ...

Special Video Section
After a four-year absence, Infineon returns to Mobile World ...
A laptop’s 65-watt adapter can be made 6 times smaller and ...
An industry network should have device and data security at ...
The LTC2975 is a four-channel PMBus Power System Manager ...
In this video, a new high speed CMOS output comparator ...
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
10:29
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...
Why culture makes Linear Tech a winner.
Recently formed Architects of Modern Power consortium ...
Specially modified Corvette C7 Stingray responds to ex Indy ...
Avago’s ACPL-K30T is the first solid-state driver qualified ...
NXP launches its line of multi-gate, multifunction, ...
Radio
LATEST ARCHIVED BROADCAST
EE Times Senior Technical Editor Martin Rowe will interview EMC engineer Kenneth Wyatt.
Flash Poll