1. 802.11n The Future of Broadband Wireless
Aleksandar Petrov,
MASIT Committee of Electronic Communications

2. Where to begin? What users want when they access The Net?
What is available out there?
Who is Our favourite across the board?
How do we measure it/decide upon it?
What can we do with it?
What about real-life examples/comparisons?
Let’s start by asking questions?
Let’s answer this 5 questions and decide together!

3. What users want when they access The Net?
EVERYTHING!
They want
FAST access,
ANYWHERE,
at AFFORDABLE price and
reasonable SECURITY
Speed over 1 Mbps for Internet, over 100 Mbps for LAN
Available anywhere [at home, in a café, at the [girl]friend’s place, we say “in any SunWireless city”]
Without any additional costs for CPE equipment, installation…
Secure enough [WPA/WPA2]…nothing is 100% secure

4. What is available out there?
Wireline
FTTH, FTTC…
ADSL
Cable DSL …
Wireless
3G/Edge/GPRS
WiMax
Wi-Fi [802.11a/b/g/n]

5. Who is Our favourite across the board?
802.11n
Why?
up to 600Mbps wireless over a free band 2.4/5GHz
[standard] ready/available on all new devices [laptops, smartphones]
Want technical info? – please visit
Our winner is Wi-Fi that is its latest standard n-2009
Want technical info? – please visit
They’re great, we all are using them a lot and they need your help – you may also donate something 

6. How do we measure it/decide upon it?
FAST access [broadband]
MOBILE access [anywhere]
AFFORDABLE access [re. price of service/CPE]
EASY access [readily available on any laptop/PC/desktop]
SECURE access
QUALITY access [data, voice, video]
I hope we all agree that we have taken all relevant parameters into consideration.

7. How do we measure it/decide upon it?
BEST Overall Scores
FAST access [broadband] = 250 Mbps, avg Mbps throughput
MOBILE access [anywhere] = same service/different place
AFFORDABLE access = starting at very low prices with 0€ CPE
EASY access = NO need for installation, cables or external CPE
SECURE access = WPA/WPA2 offers sufficient protection
QUALITY access = data, voice & video can be provided at acceptable quality

8. Let’s see it in real-life [Wi-Fi vs Wi-Fi]!
The Novarum Experiment
100% throughput improvement of n Wi-Fi clients with legacy g outdoor infrastructure;
100% throughput improvement of legacy g Wi-Fi clients with new n outdoor infrastructure;
200% throughput improvement of n client with n outdoor infrastructure;
25% decrease in access latency and a dramatic improvement in latency variance;
coverage to smartphones at low power and with poor antennas dramatically improves.
Source: improves-outdoor-wifi/

9. Let’s see it in real-life [cont’d]!
The Novarum Experiment
[Expected improvements with outdoor n technology]
400% to 800% increase in system capacity and throughput;
200% to 300% improvement in spectral efficiency
802.11n clients dramatically improve legacy g networks and new n networks dramatically improve legacy g clients;
Streaming media applications will perform as we expect and will be much easier to deploy;
Decreased deployment cost due to decreased node cost .
Source: dramatically-improves-outdoor-wifi/

10. Let’s see it in real-life [Wi-Fi vs Others]!
“Apples-to-Apples” real world measurement tests performed in over 25 cities in the USA, 20 locations per city [ ]
ATT [Cingular], Sprint and Verizon cellular data networks;
A number of metro WiFi networks using equipment by various manufacturers; and
Four of ClearWire’s pre-WiMax networks
Conclusion: We discovered that, on the average, all of these networks have substantial performance and coverage. But the best Wi-Fi networks substantially outperformed the best of the other networks.
Source:
The test was an “apples-to-apples” comparison of performance [delay, uplink throughput, downlink throughput] and availability [percentage of tested locations with service within an advertised service area] for all of the major network technologies:
To our surprise, using similar client modems, averaged over good and bad networks, Wi-Fi networks delivered almost three times better performance than cellular networks and materially better performance than pre-WiMax networks – with similar levels of availability of service over the promised coverage area for all three network technologies.

11. Let’s see it in real-life [cont’d]!
802.11n: The End of Ethernet?
Comparison of the most important parameters for “bandwidth hungry” applications:
Source: Burton Group, Network and Telecom Strategies, In-Depth Research Report, v

12. What can we do with it? Surf the Internet with no limitations
“Download the Internet”
Voice over WLAN
Video Conferencing over WLAN
HD streaming over WLAN
???
Download the Internet – it’s how we refer to our top-talkers – “people who want to download everything from The Net”

13. What about real-life examples/comparisons?
3G vs Wi-Fi [b/g]
This test was taken last spring in the Centre of Skopje in Club FM over a beer with our Technical Director on his iPhone!

14. What about real-life examples/comparisons?
SW point-to-point n link
Over 70 Mbps useful Rx 26 km
Over 50 Mbps full duplex useful throughput km
We apologize, but live demonstrations are only available to close business partners & investors 

15. Last proof It’s available on the MacBook [incl. Air/Pro]
The “bigshots” [AT&T] most likely forbade it on the iPhone 3GS

16. Thank You!
Aleksandar Petrov