Embedded Systems Conference
Breaking News
Comments
Newest First | Oldest First | Threaded View
macchr
User Rank
Author
FCC / EU comparison (FS backhauling only)
macchr   8/29/2014 9:46:15 AM
NO RATINGS
I respect the view of silicon vendors (they better wish to have a single design for all application in the same band).

However, we should not forget that while FCC Part 15 regulation is for "generic radios" (i.e. with no specific spectrum access rights), EC/CEPT regulation is specific for Fixed links systems (having "primary" allocation in the band).

Therefore, while FCC rules are not specifically aimed to maximise the spectrum use for the users, CEPT coexistence study (ECC/REPORTs 113 and 114) are focussed on specific applications and resulted in a balanced regulation maximising (statistically) the availability for both "primary" and "other"users. In particular also for FS users among themselves; it should not be forgotten that EU urban backhauling links will be very short and the O2 absorption becomes of little help in managing interference when high density, multioperator networks are considered.
Furthermore, CEPT regulation in most cases are relatively easy to be changed when specific new technology is emerging and its fair compatibility with other users is technically demonstrated.

Anyhow, while the comparison in term of maximum emission limits shows large difference (about 30 dB), the comparison in the practical range of fixed links backhauling technology is significant less important (about 10 dB) and equipment manufactures feeling is that only few more dB power (in the order of 5) would eventually be welcome (possible discussion about ATPC enhance emission might be possible.

AmirB52
User Rank
Author
Keep tx power low
AmirB52   8/25/2014 6:42:38 AM
NO RATINGS
High tx power = higher power consumption?

 If you keep the tx power low and the antenna gain high. You will get lower power consumption. Thus, extended reliability and cheaper electronics circuits.

neilbullock1
User Rank
Author
Re: Hitting a barrier?
neilbullock1   6/2/2014 2:06:48 AM
NO RATINGS
At Silicon Image, we fully concur with Mark's observations. In addition to reducing equipment costs, phased array antennas reduce installation and maintenance costs, as the beam can be electronically steered during and after installation without manual intervention. The small size of phased array antennas, combined with the high performance, high integration and low power of CMOS 60GHz RF transceivers also enable wireless mesh networks - the best way to meet the capacity expectations for next generation mobile networks without digging up every street for fiber.

rick merritt
User Rank
Author
Hitting a barrier?
rick merritt   5/29/2014 2:31:49 AM
NO RATINGS
I'd love to hear from anyone else in wireless backhaul that has hit this barrier.



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

March 28 is Arduino Day -- Break Out the Party Hats!
Max Maxfield
7 comments
Well, here's a bit of a conundrum. I just received an email from my chum David Ashton who hails from the "Unfinished Continent" Down Under. David's message was short and sweet; all he said ...

Bernard Cole

A Book For All Reasons
Bernard Cole
1 Comment
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 ...

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