Design Con 2015
Breaking News
Comments
Oldest First | Newest First | Threaded View
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.

neilbullock1
User Rank
Rookie
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.

AmirB52
User Rank
Rookie
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.

macchr
User Rank
Rookie
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.



Flash Poll
Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

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

Book Review: Deadly Odds by Allen Wyler
Max Maxfield
11 comments
Generally speaking, when it comes to settling down with a good book, I tend to gravitate towards science fiction and science fantasy. Having said this, I do spend a lot of time reading ...

Martin Rowe

No 2014 Punkin Chunkin, What Will You Do?
Martin Rowe
1 Comment
American Thanksgiving is next week, and while some people watch (American) football all day, the real competition on TV has become Punkin Chunkin. But there will be no Punkin Chunkin on TV ...

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
14 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 ...

Martin Rowe

Book Review: Controlling Radiated Emissions by Design
Martin Rowe
1 Comment
Controlling Radiated Emissions by Design, Third Edition, by Michel Mardiguian. Contributions by Donald L. Sweeney and Roger Swanberg. List price: $89.99 (e-book), $119 (hardcover).