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Well,

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It has always been possible to provide wireless LAN’s. But, what has always hampered their use has been the physical environment. For example, concrete walls full of rebar constitutes an antenna array and the only way thru with high speed is via a perpendicular angle of attack otherwise dispersion becomes an issue for very low angles of attack. Second issue is security… anything wireless is unsecure (remember my old saying “if it was conceived by a man another man can figure it out”) WEP/WPA can be breached. So, my neighbor could ride my IPTV but he has to have a set top box which are available on the black market (and have always been). MIMO is a complicated technology and is heavily dependent on stable inputs to produce stable outputs (it’s nothing more than a multiplexing technology). It is heavily used at cellular sites and works pretty good…. in the home or office? Long way to go for that.

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Last thought, any wireless RF is heavy on protocol overhead, don’t be fooled by the stated throughput. An excellent cabled Ethernet system can get a maximum of 95%, the rest is eaten up by Ethernet overhead. Wireless requires more overhead capacity due to the interference that may be encountered, extra security, compression, MIMO processing, etc.

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There’s more but think Greenfield versus Brownfield environments. How many times has AP’s been installed and additional ones had to be installed because of unforeseen signal strength issues that weren’t uncovered in the modeling?

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Also notice the limited applications; streaming video, large file transfers, etc. Very expensive… as a user it doesn’t help me type faster nor read faster… to me, to try and fit to the individual is a waste of bandwidth; that’s why plain old cabled Ethernet has always won out in the end for the last 35 years….

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Add to that, I can’t tell you what sources of interference I would encounter today in the 5ghz range must less tomorrow…. How about with my neighbors? Every source of interference is added overhead… ??

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Streaming high-definition video wirelessly throughout your home will be a major benefit of Wi-Fi 802.11ac in the next few years, says NPD In-Stat.

Re post?:?http://news.cnet.com/8301-1035_3-57363508-94/wi-fi-802.11ac-to-drive-wireless-hd-video-in-the-home/

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Expected to receive final approval by the?IEEE?toward the end of this year, 802.11ac will boast several improvements over 802.11n. The new wireless flavor will offer speeds surpassing 1 gigabit per second, almost three times that of 802.11n. It also promises to provide better coverage throughout an entire home with fewer dead spots.?

From a technical standpoint, the new standard will use such technologies as?beamforming?and higher?amplitude modulation?to send more data faster and more efficiently than 802.11n, NPD In-Stat analyst Gregory Potter told CNET. And 802.11ac will help smartphones and other mobile devices by providing higher bandwidth and a savings in power compared with 802.11n.

As 802.11ac starts to hit a variety of gadgets, including laptops, smartphones,?tablets, and TVs, Potter sees high-definition video as the major beneficiary.

"The primary use case for consumers using 802.11ac is for video distribution," the analyst said late last week. "One scenario would be utilizing 802.11ac in a cable or satellite set top box for distribution of video to multiple televisions outside the main viewing area. Another would be utilizing 802.11ac on a smartphone to stream HD video directly to a television."

Once 802.11ac is approved this year, it will then be ready for certification by the?Wi-Fi Alliance?in early 2013, Potter explained. That will then pave the way for its full adoption by technology and consumer electronics companies.

At first, though, the industry will likely release a slew of "draft" 802.11ac devices, just as was seen with Wireless-N. Several vendors already showed off some of their upcoming 802.11ac products at?CES?earlier this month, including Buffalo, which demoed its?first wireless routerpowered by the new protocol.

The first smartphones sporting 802.11ac will pop up early in 2013, forecasts Potter. Digital televisions adopting the new standard will also appear next year, with NPD In-Stat projecting more than 2 million 802.11ac-equipped TVs .

But consumers will probably have to wait until around 2015 before 802.11ac really latches onto the market.

At that point, the analyst expects 802.11ac to appear in more than 18 million routers, 25 million TVs, 129 million tablets, 184 million notebooks, and 279 million smartphones. Altogether, around?1 billion devices?equipped with the new standard are forecast to ship in another three years.

Broadcom has partnered with 14 enterprises for its 5G Wi-Fi chip solutions, including Microsoft, LG Electronics, Motorola, Best Buy, Comcast,?Buffalo, Belkin, Netgear, China-based Lenovo and Taiwan-based Asustek Computer and D-Link, Hurlston said.

Industry stalwarts opine that it is a bad idea to forgo structured cabling and invest in a network switch. Structured cabling investments have a life span of at least 3 or 4 times the life of network hardware, therefore it is crucial to build a structured cabling system that supports any and all existing technologies and hopefully build in growth. The system should have option for different topologies and tier structures. It is recommended to have a combination of copper and fiber to maximize flexibility and minimize cost. In addition to investment protection, structured cabling also provides administrative and management.

Copper Categories

Copper cabling would never take a back seat because setting up network wholly on fiber is highly expensive which is not worth or a requirement. Installation of copper cable is much simpler and easier when compared to fiber cables.

Copper cabling standards are designated as Category 5, Category 5e, Category 6, Augmented Category 6 (Cat 6A), Category 7, Category 7A (augmented). Electronic Industry Association/Telecommunication Industry Association (EIA/TIA) 568A standard defines multiple categories or upgrading of structure cabling system performance while the category 6, 6A, and 7 are the highest currently standardized at present.

Category 5 is having a natural death. It is a very old standard. Most of the cabling vendors have quit cat 5 manufacturing.

Category 5e was ratified in 1999 which has superceded cat 5. The frequency range of 5e is at 100 MHz. It has improved durability and signal capabilities. It has less electronic interference over Cat 5. This copper cabling is widely installed across India currently than any other cabling infrastructure. It is well suitable for horizontal cabling requirements. It is also an affordable technology. Cat 5e has been adopted more for large horizontal cabling requirements for higher bandwidth in commercial networks, software firms, educational institutions, and high rises.

Category 6 cabling operates at 250 MHz frequency. It is the best performance specification for UTP and shielded category twisted pair (ScTP). Cat 6 demands more stringent requirements than Cat 5 and 5e for instance installers ought to maintain half an inch or less of untwist at the termination, proper bend radius and avoid short links less than 15 meters. It utilizes RJ-45 connectors and they are backward compatible to Cat 5e. The prominent USP of Cat 6 is that it is an interoperable standard.

Category 6a operates at a frequency of 550 MHz. It is backward compatible with the existing standards, this technology is suitable for industry sectors utilizing high-performance computing platforms to support very high bandwidth-intensive applications. 10G/Cat 6a applications would initially be deployed in server farms, storage area networks, data centers, and riser backbones. It supports 10G.

Category 7 provides 600 MHz of data transfer rates. It is an expensive and cumbersome medium. It can be replaced by fiber at practically the same cost or even less. Shajan George, technical director at R&M India says, “Cat 7 is likely to have a natural death because it is unadaptable. There are installation issues, cables ought to be repulled.”

Category 7a is known to operate at 1,000 MHz but it is yet to be ratified. It is at a very nascent stage.

Advanced cabling systems are now being demanded in India, newer technologies are being adopted in India. Cat-7A is catching up well across the verticals. While commenting on the advantages of cat 6 and 7, Deepak Jagtiani, regional sales director, MPN-India & ASEAN, Molex Premises Networks pointed out that there is not much difference between cat 6a and 7 in terms of performance but there is difference in pricing. Investment while upgrading from Cat 6 to Cat 6a installations would increase by 25% and from cat 6a to 7 would rise to 40%.” He added, “There is a huge acceptance of Cat 6A deployments which meet higher bandwidth needs in data centers as well as at work stations.”