10.04.2004 08:00 AM
ATSC approves recommended practice on Synchronized Multiple Transmitter Networks

The Advanced Television Systems Committee (ATSC) has approved a new recommended practice: A/111, “Design of Synchronized Multiple Transmitter Networks.”

The document provides guidance on the design of specialized transmission facilities that utilize multiple transmitters to cover a station’s service area. Single Frequency Networks (SFNs) and Multiple Frequency Networks (MFNs) can be used to address specific signal coverage issues, including those relating to difficult terrain.

As described in A/111, these networks can be implemented using Digital On-Channel Repeaters (DOCRs), Distributed Transmission (DTx) systems, or Distributed Translators (DTxRs). A/111 focuses on the design aspects of SFNs.

Merrill Weiss, who led the ATSC effort to develop the new Recommended Practice, said A/111 is required reading for anyone interested in the design of Single Frequency Networks.

Benefits of the SFNs described in A/111 inlcude:

  • More uniform signal levels throughout the area being served
  • Reduced interference
  • Fewer terrain limitations
  • More reliable indoor reception

A/111 was developed in the ATSC Specialist Group on Transmission (T3/S9). The document is a companion publication to ATSC Standard A/110, which describes the means to synchronize the emissions of multiple DTV transmitters. This capability is necessary to making a Distributed Transmission system practical.

A Recommended Practice is a document that typically provides guidelines for operation and performance. The ATSC has adopted a variety of recommended practices for different industry segments in the DTV field.

A copy of the approved standard is available from the ATSC.

For more information, visit www.atsc.org.

Back to the top




Comments
Post New Comment
If you are already a member, or would like to receive email alerts as new comments are
made, please login or register.

Enter the code shown above:

(Note: If you cannot read the numbers in the above
image, reload the page to generate a new one.)

No Comments Found




Thursday 10:05 AM
NAB Requests Expedited Review of Spectrum Auction Lawsuit
“Broadcasters assigned to new channels following the auction could be forced to accept reductions in their coverage area and population served, with no practical remedy.” ~NAB


 
Featured Articles
Research & Standards
Discover TV Technology