Home News Forum Articles
  Welcome back Join CF
You are here You are here: Home | Forum | Qam256


You are currently viewing our boards as a guest which gives you limited access to view most of the discussions, articles and other free features. By joining our Virgin Media community you will have full access to all discussions, be able to view and post threads, communicate privately with other members (PM), respond to polls, upload your own images/photos, and access many other special features. Registration is fast, simple and absolutely free so please join our community today.


Welcome to Cable Forum
Go Back   Cable Forum > Virgin Media Services > Virgin Media Internet Services
Reload this Page Qam256
Register FAQ Members List Calendar Mark Forums Read

Qam256
Reply
Page 1 of 2 1 2 >
 
Thread Tools
Old 06-01-2007, 05:27   #1
cf.member
 
Join Date: Dec 2006
Location: Northants uk
Services: 10meg broadband Sky HD
Posts: 4
smiffly is an unknown quantity at this point
Send a message via MSN to smiffly Send a message via Yahoo to smiffly
Qam256
Just spotted in the forum a reference to QAM256 what is this? also I believe that Northamptonshire has not been upgraded!! (from what? to what? and what will the upgrade do?) I also note that "some 10 meg users are having problems big time with Ntl! others on the otherhand sing it's praises (wish I wish I was one of them) would this be why I have probs? Come on Ntl I still keep the faith guys, it helps with the Paranoia.
smiffly is offline   Reply With Quote
Old 06-01-2007, 08:58   #2
Bill C
Guest
 
Posts: n/a
Re: Qam256
When i covered Qam during my digital tv training, I needed match sticks to keep my eye lids open in the lessons, Here's why

http://en.wikipedia.org/wiki/Quadrat...ude_modulation



My area is one of those on QAM 64 and i can get speeds like this
Last edited by Bill C; 06-01-2007 at 09:11.
  Reply With Quote
Old 06-01-2007, 10:23   #3
cf.geek
 
fireman328's Avatar
 
Join Date: Nov 2003
Location: Surrey
Posts: 981
fireman328 is the helpful onefireman328 is the helpful onefireman328 is the helpful onefireman328 is the helpful onefireman328 is the helpful onefireman328 is the helpful onefireman328 is the helpful onefireman328 is the helpful onefireman328 is the helpful onefireman328 is the helpful onefireman328 is the helpful onefireman328 is the helpful onefireman328 is the helpful onefireman328 is the helpful onefireman328 is the helpful onefireman328 is the helpful onefireman328 is the helpful onefireman328 is the helpful one
Re: Qam256
Just reading the Wickipedia definition made my brain ache
__________________
Sir Eyre Massey-Shaw
fireman328 is offline   Reply With Quote
Old 06-01-2007, 10:40   #4
cf.addict
 
Down the Pub's Avatar
 
Join Date: Jan 2006
Location: Widnes
Services: V+/vbox - BT Anytime - O2 16meg (for now, when it goes live until then vm 20meg)
Posts: 448
Down the Pub has much to be proud ofDown the Pub has much to be proud ofDown the Pub has much to be proud ofDown the Pub has much to be proud ofDown the Pub has much to be proud ofDown the Pub has much to be proud ofDown the Pub has much to be proud ofDown the Pub has much to be proud ofDown the Pub has much to be proud ofDown the Pub has much to be proud of
Re: Qam256
wtf does "However, if the mean energy of the constellation is to remain the same" mean? , after that i gave up reading, if i want a headache i'll have a few
__________________
E6750@3.36Ghz, Thermalright Ultra-120, Asus P5K-C, 2Gb Geil Ultra PC6400, BFG 8800GTS OC 320Mb, 80+250Gb Samsung Spinpoint HDD & 250Gb WD Ext HDD
Down the Pub is offline   Reply With Quote
Old 06-01-2007, 11:05   #5
cf.geek
 
Join Date: Mar 2005
Location: here
Age: 39
Services: Sky, ukonline 16Mb ADSL, BT Phone.
Posts: 632
sollp has much to be proud ofsollp has much to be proud ofsollp has much to be proud ofsollp has much to be proud ofsollp has much to be proud ofsollp has much to be proud ofsollp has much to be proud ofsollp has much to be proud ofsollp has much to be proud ofsollp has much to be proud of
Re: Qam256
Basically your getting more data on the downstream to the modem using 256QAM. Its an upgrade that is being implemented around the country to improve the cable modem service, a fairly cheap way of improving service to the customer just a raising of the carrier in the network and a configuration from 64QAM-256QAM on the UBR's and some other stuff.

And everybodys happy!
sollp is offline   Reply With Quote
Old 06-01-2007, 11:30   #6
cf.mega poster
 
Nikesh's Avatar
 
Join Date: Nov 2006
Location: Leicester
Services: Virgin Media
Posts: 2,899
Nikesh has reached the bronze age
Nikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze age
Re: Qam256
Thanks for simplifying it for us Saves me having to read the whole wiki article.
Nikesh is offline   Reply With Quote
Old 06-01-2007, 12:34   #7
Bill C
Guest
 
Posts: n/a
Re: Qam256


Told you it was bad

  Reply With Quote
Old 06-01-2007, 16:45   #8
cf.mega poster
 
Join Date: Sep 2003
Location: Leics
Age: 29
Services: none
Posts: 5,641
Chrysalis has reached the bronze age
Chrysalis has reached the bronze ageChrysalis has reached the bronze ageChrysalis has reached the bronze ageChrysalis has reached the bronze ageChrysalis has reached the bronze ageChrysalis has reached the bronze ageChrysalis has reached the bronze ageChrysalis has reached the bronze ageChrysalis has reached the bronze ageChrysalis has reached the bronze ageChrysalis has reached the bronze ageChrysalis has reached the bronze ageChrysalis has reached the bronze ageChrysalis has reached the bronze ageChrysalis has reached the bronze ageChrysalis has reached the bronze ageChrysalis has reached the bronze ageChrysalis has reached the bronze ageChrysalis has reached the bronze ageChrysalis has reached the bronze age
Re: Qam256
Quote:
Originally Posted by Bill C View Post
When i covered Qam during my digital tv training, I needed match sticks to keep my eye lids open in the lessons, Here's why

http://en.wikipedia.org/wiki/Quadrat...ude_modulation



My area is one of those on QAM 64 and i can get speeds like this
What type of ubr do you have and the OP have?

The crappy UBRs like the ones in LE3 on QAM256 only catch up with the better UBRs on QAM64.
Chrysalis is offline   Reply With Quote
Old 06-01-2007, 19:54   #9
 
Quam256's Avatar
 
Join Date: May 2006
Services: XL,Phone and 20ishmb .
Posts: 659
Quam256 is just really niceQuam256 is just really niceQuam256 is just really niceQuam256 is just really niceQuam256 is just really niceQuam256 is just really nice
Re: Qam256
You talking bout me ?
Quam256 is online now   Reply With Quote
Old 06-01-2007, 19:59   #10
Bill C
Guest
 
Posts: n/a
Re: Qam256
Quote:
Originally Posted by Quam256 View Post
You talking bout me ?


---------- Post added at 19:59 ---------- Previous post was at 19:58 ----------

Quote:
Originally Posted by Chrysalis View Post
What type of ubr do you have and the OP have?

The crappy UBRs like the ones in LE3 on QAM256 only catch up with the better UBRs on QAM64.
All ubr's will be on 256 sooner or later.
  Reply With Quote
Old 06-01-2007, 20:26   #11
 
Quam256's Avatar
 
Join Date: May 2006
Services: XL,Phone and 20ishmb .
Posts: 659
Quam256 is just really niceQuam256 is just really niceQuam256 is just really niceQuam256 is just really niceQuam256 is just really niceQuam256 is just really nice
Re: Qam256
I went on the course aswell and all I could remember was the name.
Quam256 is online now   Reply With Quote
Old 06-01-2007, 20:52   #12
cf.mega poster
 
Nikesh's Avatar
 
Join Date: Nov 2006
Location: Leicester
Services: Virgin Media
Posts: 2,899
Nikesh has reached the bronze age
Nikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze age
Re: Qam256
What's a UBR? I'm in the LE3 area too.
Nikesh is offline   Reply With Quote
Old 06-01-2007, 21:08   #13
Invalid E-Mail (Account Suspended)
 
Join Date: Nov 2005
Posts: 56
breamhunter is an unknown quantity at this point
Send a message via MSN to breamhunter Send a message via Yahoo to breamhunter
Lightbulb Re: Qam256
How would one find which Qam they are using?
breamhunter is offline   Reply With Quote
Old 06-01-2007, 21:15   #14
cf.mega poster
 
Nikesh's Avatar
 
Join Date: Nov 2006
Location: Leicester
Services: Virgin Media
Posts: 2,899
Nikesh has reached the bronze age
Nikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze ageNikesh has reached the bronze age
Re: Qam256
Log into your cable modem to find out what qam your on.
Nikesh is offline   Reply With Quote
Old 06-01-2007, 21:16   #15
cf.mega poster
 
dragon's Avatar
 
Join Date: Jan 2004
Posts: 3,396
dragon has reached the bronze age
dragon has reached the bronze agedragon has reached the bronze agedragon has reached the bronze agedragon has reached the bronze agedragon has reached the bronze agedragon has reached the bronze agedragon has reached the bronze agedragon has reached the bronze age
Re: Qam256
Ah QAM, yes i remember having lecture on that fun isn't it

Although kinda important if we want our modems.etc to work it was something i was taught and probably if im honest never use, its generally not needed to know how it works just how to fix it
__________________
It's Not a Bug It's a 'Feature'
dragon is offline   Reply With Quote
Reply
Page 1 of 2 1 2 >

« Previous Thread | Next Thread »

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


All times are GMT +1. The time now is 07:52.


Links
Google
 
Web www.cableforum.co.uk

Contact Us - Service Status - Virgin.Net Status - Cable Forum - Archive - Privacy Statement - Top

Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2008, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.1.0
Copyright © 2003 - 2008, Cable Forum.
(s204569790.onlinehome.info)
Copyright © 2008 Cable Forum | Hosted By 1&1 | Privacy Policy | Terms of Use Message Boards and Forums Directory