AuthorsDen.com   Join (Free!) | Login  

     Popular! Books, Stories, Articles, Poetry
   Services MarketPlace (Free to post!)
Where Authors and Readers come together!

SIGNED BOOKS    AUTHORS    eBOOKS new!     BOOKS    STORIES    ARTICLES    POETRY    BLOGS    NEWS    EVENTS    VIDEOS    GOLD    SUCCESS    TESTIMONIALS

Featured Authors:  Edmond Humm, iCheryl Sellers, iShelley Costello, iRonald Yates, iJohn DeDakis, iCheryl Wright, iCynthia Roberts, i

  Home > Technology > Articles Popular: Books, Stories, Articles, Poetry     

Amitabh Kumar

· Become a Fan
· Contact me
· Books
· Articles
· News
· 12 Titles
· Save to My Library
· Share with Friends!
·
Member Since: Jun, 2007

Amitabh Kumar, click here to update your pages on AuthorsDen.




   Recent articles by
Amitabh Kumar

Kindle and Other Reading Devices
Mobile TV:TV Finally Going Mobile!
New Hope for Mobile TV
Convergence is a convenient Buzzword
Updtaes on Mobile WiMAX
Mobile TV: A Torturous Road?
Mobile WiMAX and Broadcasting
Updates on Mobile TV
           >> View all

Mobile TV update !
By Amitabh Kumar   
Not "rated" by the Author.
Last edited: Wednesday, June 13, 2007
Posted: Wednesday, June 13, 2007

Share    Print   Save    Become a Fan


Advanced VSB demonstrated at NAB

Advanced VSB (A-VSB) demonstrated for ATSC transmitting stations

We had mentioned in the book (Chapter 5, Overview of Mobile TV Technologies) that the ATSC systems which use single carrier for modulation ( i.e. 8VSB) have severe limitations for carrying the Mobile TV channels as compared to OFDM based systems such as DVB-H or FLO. The ATSC systems also have limitations in forming Single frequency networks (SFNs) owing to the absence of synchronization timing information which could be used by adjacent transmitters.

OFDM based systems are highly resistant to multipath fading as experienced in Non-line of Sight (NLOS) and mobile handheld environments. The DVB-H technologies in fact take advantage of the structure of DVB-T to add on additional features for error correction and power saving in handsets. Using 4096 carriers (4K mode), for example, reduces the possibility of any significant Inter-symbol Interference. Also as detailed in Chapter 8 (DVB-H Technologies), the DVB-H standards have been designed for additional Forward Error Correction (FEC) and Multi-protocol Encapsulation (MPE) to provide error free transmissions in the mobile environment.

As the DTV transition is moving ahead strongly the ATSC is also adding on features to support mobile TV by some enhancements to the ATSC standard.

There were two approaches which were demonstrated at the NAB 2007 for supporting mobile TV and future incorporation in ATSC standards.

Web Site: My Mobile TV updates



Want to review or comment on this article?
Click here to login!


Need a FREE Reader Membership?
Click here for your Membership!



Forced Hot Air Furnace - Troubleshooting and Repair by Roger Vizi

Complete Troubleshooting & Repairing guide to hot air furnaces * Complete operation, maintenance, and repair * Covers gas, oil, and electric forced air systems * Includes flowchart..  
Featured BookAds by Silver
Gold and Platinum Members


Forced Hot Air Furnace - Troubleshooting and Repair by Roger Vizi

Complete Troubleshooting & Repairing guide to hot air furnaces * Complete operation, maintenance, and repair * Covers gas, oil, and electric forced air systems * Includes flowchart..  
Featured BookAds by Silver
Gold and Platinum Members

Authors alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Featured Authors | New to AuthorsDen? | Add AuthorsDen to your Site
Share AD with your friends | Need Help? | About us


Problem with this page?   Report it to AuthorsDen
AuthorsDen, Inc. All rights reserved.