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SylvieBarak
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re: Broadcom promotes new 802.11ac Wi-Fi standard
SylvieBarak   12/14/2011 11:38:55 PM
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Yes, indeed, too bad! Next time though! And hopefully I'll see you at our next Fission Chips!

docdivakar
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re: Broadcom promotes new 802.11ac Wi-Fi standard
docdivakar   12/14/2011 8:28:10 PM
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@Sylvie Barak: too bady today you have the FusionChips Party at Santana Row, otherwise you could have attended the IEEE Comsoc's meeting on a relatedf topic of Outdoor Wireless Networks for Smart Grids in which the city of Santa Clara is looking to use a 802.11x variant for free WiFi access to residents. More dedtails at the link below if any one is interested: http://www.ewh.ieee.org/r6/scv/comsoc/ MP Divakar

chanj0
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re: Broadcom promotes new 802.11ac Wi-Fi standard
chanj0   12/14/2011 6:01:28 PM
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QoS support in CSMA/CA system is very difficult to achieve although various groups have put a lot of effort into making it happens. With the help of beamforming, if number of stations in a given coverage area can be estimated, maybe, QoS will be more achievable.

LarryM99
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re: Broadcom promotes new 802.11ac Wi-Fi standard
LarryM99   12/13/2011 11:03:26 PM
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Hopefully they will include hooks for QoS support. Capacity for more streams is important, but ideally 802.11ac would support the capability to reject requests beyond its capacity rather than just degrading. larrym

LarryM99
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re: Broadcom promotes new 802.11ac Wi-Fi standard
LarryM99   12/13/2011 10:59:44 PM
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The kicker on this would be inclusion in CE devices. Unless they finally make them easier to update in place it could be a real problem for them to use early versions. larrym

old account Frank Eory
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re: Broadcom promotes new 802.11ac Wi-Fi standard
old account Frank Eory   12/13/2011 5:30:06 PM
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Once again, the IEEE will be slow to ratify a new flavor of the 802.11 standard, and consumers will be buying new equipment based on a "draft" standards. As long as the stuff works, I intend to be an early adopter of 802.11ac -- ratified or not.

Robotics Developer
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re: Broadcom promotes new 802.11ac Wi-Fi standard
Robotics Developer   12/13/2011 3:57:20 PM
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Likewise (I think): "The system, which would apparently be backwards compatible with 802.11n systems, would use a three-by-three antenna operating at 80MHz,". Should read operating with 80Mhz channels in the 5Ghz band? I think that would be correct.

SylvieBarak
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re: Broadcom promotes new 802.11ac Wi-Fi standard
SylvieBarak   12/13/2011 1:07:53 AM
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Thanks PJ, will fix.

PJames
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re: Broadcom promotes new 802.11ac Wi-Fi standard
PJames   12/13/2011 12:36:12 AM
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"if the frequency was raised to 160MHz" More accurately, "if the channel bandwidth was increased to 160MHz".



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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