Higher System Spectral Efficiency


In summary, all of the above technical characteristics in a typical iBurst system deployment scenario in a 5MHz spectrum, can be put together to explain how efficient use of frequency is achieved by iBurst system. The maximum data rate per user becomes 1,061 kbps for downlink and 346 kbps for uplink there by resulting in the total throughput per BS of 32.361Mbps as illustrated below.

Max cell Throughput (downlink) 1,061kbps x 21 + 707kbps x 3 = 24,402kbps
Max cell Throughput (uplink) 346kbps x 21 + 231kbps x 3 = 7,959kbps
Max cell Throughput (total) 24,402kbps +7,959kbps =32,361kbps

Since the spectrum (frequency bandwidth) is 5 MHz in typical deployments, theoretical iBurst system's spectral efficiency of total throughput per Base station becomes 32.361kbps/5MHz =6.47bps/sec/Cell

pick up fr http://global.kyocera.com/prdct/telecom/of...icalsystem.html

max per station is 24mbps, how can it support 500 ppl unless it reduce the quality right?

is that more like per-device on the tower ? as i know the tower you can put alot of stuff onto it.. provided space is enough...

above calculation is based on per based station... i think

well... 500 ppl per station... 1 MB per user... even if it reduce to 0.5MB, that means it can support up to 1k users... but frankly speaking... i have no idea on how many user would that be around 1 station. When there are sufficient users in an area like town area, there would be more than 1 station. So, i believe it would be good...

hmm anybody seen such towers around ?? these are iburst towers...

i saw the base station in damansara area
look like this one http://global.kyocera.com/prdct/telecom/of...images/f_le.jpg

can be more exact ah.. then we ourself plot out the iburst tower location hahahah

good development from the public to trace their credibility. It is fun to trace which poster is a 'shill' and knowing how they respond to counter the countless technical details XD

I noticed all their salesperson are girls with advance mascara goop..lol

simple marketing.. 101.. sex sales.. girls sell to guys.. guys sell to girls..* certain products only*

i wonder if those are IT background

same here in miharja. looks similar with this

tested izzi by in my house at 11 floor, Desa Sri Puteri, Desa Petaling today.
found this guy from lelong, asked him come to my house to test, then only decide want or not...good service?
You no need to pay if you think no good signal...

so test result was not good, 40% near window, if indoor only 20-30%.
download - 200-300kbps
upload - 100kbps

before this, i saw a shop in Tesco, Cheras, the test speed there can up to 1000kbps.

So i don want to take risk to sign up, even the t&c said can get refund within 7 days if not satisfy, but must pay RM180 admin fees.

i'm actually using streamyx 1mb, but since last month until now, my download speed only about 100-300kbps ( before 700-800kbps ), upload 300kbps.
So i decided to change to izzi, but now look like the signal here not so good, so i give up and stay with streamyx.

Streamyx 1mb super fast in my working place, USJ21, dl 1500kbps, upload 350kbps....

So suggest who decide to use izzi, can search lelong.com, type broadband and search.
Hope this help.
Ask this guy come to your house and test....good idea?
This guy also can do easy payment by credit card, he can just fill the form, call the bank and get approval.
Everything can do in your house....

This post has been edited by karheng: Oct 18 2007, 10:56 PM

LOL.... i am not sure of the signal tower that is near to Desa Petaling.... but since you said that the signal is 40%, that means is not near to any tower... thus your line is a bit slow... but i am sure that they are gonna upgrade pretty soon.

funny thing is that he didnt mentioned on his post if there's activation fees needed.

i listed it in
http://www.wikimapia.org/#lat=3.133199&lon...=18&l=0&m=a&v=2
go add in more
but i dont think they (izzi) will like it

Guys, i am new user of wireless broadbands....thinking of getting one soon...i am staying at Brickfield near KL Central. Do you guys think it would be good choice if i choose izzi broadband? I mainly wanted to download movies and use p2p.

karheng would the guy that u mention earlier come to anywhere to test the speed. and guys what would be the good speed. I know we can't get 1Mbs as mention in the package. but what is the acceptable speed to download movies from p2p. 600-800 kbs izzit...

Do you guys think i can go for izzi service? thinking of getting izzieyou service. Please advice me...

i think he willing to come to your place.
he is from Serdang what he told me...and when i call him around 10.30am, he straight come to my house 1 hr later, not bad.
i think he try find more business also, so i think should be no problem ask him to come to your house.
he bring his own notebook, and using izzione ( PCMCIA ) test at my home. Then using his attenna to find more signal, is better reception, but still not as good as my expected. testing speed sometimes 400kbps, sometimes 600kbps, sometime 200kbps....

i think izzi may work if you are staying clear off high building, my house blocked by others apartment...
or, unless you are staying highest floor, pent house...hehe...

he said MEI furniture, Desa Petaling, and Kuchai Enter. Park very good....

good luck!

This post has been edited by karheng: Oct 19 2007, 05:13 PM

okay... one of my friend is using izzi wireless broadband... He stays in serdang. his coverage was 40% before he added the antenna. When he added the antenna, it was 100% coverage already... The speed is good.


Before Antenna
233 kbps(download), 30kbps(upload)

After Antenna
Download Speed: 983 kbps (122.9 KB/sec transfer rate)
Upload Speed: 170 kbps (21.3 KB/sec transfer rate)

In that case, the service provider should ALWAYS provide antenna in case the users wanna relocate to other places. Why they "sorok" the antenna? To cut cost?

well... i was told that the antenna cost RM68... If they want to include the antenna into the UT, the package would be higher in price.

Everything comes with a cost.... but they are trying to minimize the cost.. Not everyone needs the antenna... Furthermore, after they had upgraded their service, antenna might not even be needed... so, why would they want to include the antenna cost in it?

Like I've mentioned previously, I may not need antenna if I stay near the transmission tower or whatever they call it. But if I travel to other places or if I'm the road warrior, I will definitely need the antenna for OTHER locations that are receiving weak 4G signal. Logic isn't it?

2nd point is, I can re-sell the whole hardware (plus antenna) to other ppl who need it. I cannot re-sell the hardware when potential buyers evaluate the performance as bad due to lack of antenna.

Now that the antenna is free upon request, I would definitely request one. For those who already signed up without the antenna, I advice u to get the antenna while it's free. And any other potential subscriber who planned to signup, request for the antenna even though ur signal is good at your current location. Who knows u might "berpindah-randah" from one place to the other and find that the 4G is weak over "there".

This post has been edited by dgtel2: Oct 20 2007, 09:25 AM