Category: Entertainment

Presentation Description

No description available.


By: smruti.chin2 (97 month(s) ago)

how to down load dis ppt

By: myolay (99 month(s) ago)

hi , thz

By: amitsaha86 (113 month(s) ago)

I want 2 download dis ppt....How can i do dat??? Plz reply soon...My email id is

By: amitsaha86 (113 month(s) ago) /Clarice-29947-ADSL-Asymmetric-Digital-S ubscriber-Line-Table-Contents-Introducti on-Advantages-Nyquists-Theorem-as-Entert ainment-ppt-powerpoint/

Presentation Transcript

Asymmetric Digital Subscriber Line (ADSL): 

Asymmetric Digital Subscriber Line (ADSL)

Table of Contents: 

Table of Contents Introduction Advantages Drawbacks Conclusion


Introduction High speed data link. Pure network connection. Coming with different schemes: CAP, QAM, and DMT. Using special modems called endpoints


Server Internet CORE Network ADSL Existing Copper ADSL 1.5 to 9 Mbps 16 to 640 kbps ADSL Connection


Advantages Connectivity – always connected Ease of use Reliability Security Speed


FDM POTS POTS Upstream Upstream Downstream Downstream Echo Cancellation Frequency Frequency 1 Mhz 1 Mhz Create Multiple Channel

Nyquist’s Theorem: 

Nyquist’s Theorem Maximum data rate = 2H log2 V bits/sec H = low-pass filter of bandwidth V = signal discrete levels


Drawbacks Availability Signal leaking Cost of installation and equipment Not standardization


Splitter ADSL modem Phone Phone Telephone line Voice + ADSL Voice (only) ADSL (only) Fig. 1 ADSL Problem


Splitter ADSL modem Phone Phone Telephone line Voice + ADSL Voice (+ ADSL leakage) ADSL (only) Fig. 2 ADSL Problem ADSL Filter


Conclusion ADSL is a high speed access to internet. ADSL has advantages but it also has limitations. ADSL needs to extend the access distance. ADSL might improve the speed. ADSL needs to be standardized.

authorStream Live Help