Xperi has developed a new set of Advanced FM service modes in response to emerging market demands and opportunities. These new service modes offer broadcasters the ability to significantly enhance their digital capacity using both hybrid and all-digital waveforms. Some of these advanced service modes are backward compatible with existing service modes, and some are not. This presentation will review the results of recent field trials using Hubbard station WTLP in Braddock Heights, MD. Specifically, it will compare performance of the new signals with their legacy counterparts, highlighting the critical tradeoff of robustness for capacity. These test results demonstrate the ability of HD Radio broadcast technology to reliably deliver higher-throughput digital information over much of the existing coverage area.
Paul Peyla | Xperi, Inc. | Columbia, Maryland, United States Dave Kolesar | Hubbard Broadcasting, Inc. | Washington, District of Columbia, United States
Every year, each of the more than 4,000 FCC-licensed AM radio stations in the US are required to make and document “NRSC measurements” and place the reports in the station official files. While these measurements can be done by local station engineers, the measurements are relatively complex and can require sophisticated equipment to be completed properly. Compiling the measurements into a document that meets FCC requirements can also be difficult. The number of contract engineers capable of making the making the measurements and providing professional reports continues to decline. The cost of providing these reports is increasing, making it even more difficult for station management to meet the FCC report requirements. This paper discusses some history behind these measurements, reviews the details as specified in the FCC rules and NRSC Standards, and offers suggestions on how to compile the measurement data to create professional reports.
James Dalke | Dalke Broadcast Service, Inc. | Bellevue, Washington, United States Martin Hadfield | The Hadfield Group, LLC | Seattle, Washington, United States
As the media industry continues to transform and adopt media over IP solutions, the importance of proper testing and verification of network performance and timing infrastructures cannot be overemphasized. The SMPTE ST 2110-21 standard sets strict timing and jitter requirements that depend on predictable network behavior. The acceptable network load level limitations for particular video formats used in a facility must be tested and verified before commissioning the facility. However, broadcasters and system integrators often skip this step due to cost and the unavailability of equipment that can generate adequate network traffic load and proper traffic profiles. This creates a need for a cost-effective solution that enables broadcasters to perform acceptance testing of their media over IP networks as close to the real-world load, traffic patterns, and network scenarios as possible. This paper is the first in the series of publications to propose a solution for media over IP network load testing using off-the-shelf hardware and open-source software. The proposed solution allows for generating specific media traffic profiles, ensuring that the performance of the traffic shape and network timing is adequately tested and verified, leading to a more reliable and robust media over IP infrastructure. The paper explores the hardware, software, tuning, and integration needed to build such a testing platform. Future publications will explore that traffic patterns and real-world testing.
Ievgen Kostiukevych | European Broadcasting Union | Geneva, Switzerland Pavlo Kondratenko | European Broadcasting Union | Geneva, Switzerland Thomas Kernen | NVIDIA | Zurich, Switzerland Willem Vermost | VRT | Brussels, Belgium
ATSC 3.0, often referred to as “NEXTGEN TV,” is gaining traction and is now being broadcast in over 60 markets in the United States. There are many challenges for broadcasters to adopt this technology and this is especially a concern for Public Broadcasters who may not have a necessary simulcast partner in their markets to continue ATSC 1.0 transmissions while beginning ATSC 3.0 operations. This paper presents a potential roadmap for stations, with an emphasis on statewide networks, to deploy ATSC 3.0. Examples in this paper will focus on two PBS North Carolina broadcast facilities and one Iowa PBS broadcast facility, but the criteria used could easily be adapted for other stations.
Don Smith | PBS North Carolina | Research Triangle Park, North Carolina, United States Fred Engel | PBS North Carolina | Research Triangle Park, North Carolina, United States Bill Hayes | Iowa PBS | Johnston, Iowa, United States
This paper introduces the concept of virtual channels and how hybrid delivery can be used to provide additional services to broadband connected consumer receivers when available OTA bandwidth is limited. It also discusses the backend infrastructure, used during testing and development, to distribute the virtual channels. Finally, it proposes the use of virtual channels to launch new services in markets that have transitioned to ATSC 3.0 where over-the-air bandwidth may be limited due to channel-sharing.
Peter Gogas | Gray Television | Bryan, Texas, United States
(Winner, 2023 BEIT Conference Proceedings Best Paper Award)
This paper provides a proof-of-concept for delivering audio services using ATSC 3.0. First, it outlines the initial starting requirements for the development of the system. It then covers the determinations made at each process step to fulfill these goals: encoding, delivery layer, physical layer, and receiver. Real-world results of the tests conducted in the Baltimore market are then discussed. Finally, the next steps in development and potential gaps in the standard to fill are suggested.
Liam Power | ONEMEDIA | Hunt Valley, Maryland, United States
The ATSC 3.0 NextGen TV standard defines a precise time stamp of the emission time of each broadcast frame. The time stamp, along with the transmitting antenna location, can be used to determine the distance of the receiver from the transmitter. If at least three such ATSC 3.0 transmissions are available in an area, these broadcasts can be used as a precise positioning system, called a Broadcast Positioning System (BPS) , which can be used as a backup system for the Global Positioning System (GPS).
However, providing a precise time stamp is technically challenging due to various delays and variability in the broadcast transmission studio processing chain. This paper describes a proof-of-concept system, developed by multiple partner companies under the direction of NAB Pilot, that provides a closed loop time stabilization system. The paper explores the techniques used to measure the broadcast signal’s emission time and to compensate for the processing chain timing variability stabilizing the emission time stamp. The paper also describes the lessons learned and the barriers to further improve the timing accuracy of the BPS system.
Mark T. Corl | Triveni Digital, Inc | Princeton, New Jersey, United States Vladimir Anishchenko | Avateq Corp. | Markham, Ontario, Canada Tariq Mondal | National Association of Broadcasters | Wasington, District of Columbia, United States
BBC Studios televised Her Majesty Queen Elizabeth II’s funeral across the UK through its BBC broadcast television network. International broadcast channels with preexisting satellite infrastructures used them to bring the event to their audiences. There were, however, a number of media groups with no existing satellite links to the BBC looking to acquire the rights for rebroadcast to their audiences. This paper will demonstrate why a cloud-based media distribution workflow proved to be the ideal solution for BBC Studios to rapidly augment their distribution footprint for the broadcast of a unique event that captured the attention of the entire world.
Paul Calleja | GlobalM | Geneva, Switzerland Daniel Maloney | Matrox Video | Montreal, Quebec, Canada
Versatile Video Coding (VVC or H.266) is the latest video coding standard jointly developed by ISO/IEC MPEG and ITU-T VCEG. With best-in-class compression performance, VVC can enhance existing applications and enable new services. As the first VVC implementations enter the market, several application-oriented standards developing organizations and industry fora are defining VVC-based profiles and corresponding receiver capabilities. However, these specifications don’t typically prescribe how a service is realized and the impact of the codec’s operational parameters on delivered compression performance. To this end, the Media Coding Industry Forum has initiated the development of VVC technical guidelines. These guidelines will serve as a reference for VVC configuration choices to address operational, interoperability, and regulatory needs while achieving optimal compression performance. This paper presents an overview of the guidelines’ scope and development process, followed by a discussion of VVC configuration aspects, with focus on new features which are of utmost relevance to broadcast and streaming applications and concludes with analysis of performance for the presented scenarios.
Łukasz Litwic | Ericsson | Gdańsk, Poland Dmytro Rusanovskyy | Qualcomm Technologies Inc | San Diego, California, United States Sean McCarthy | Dolby Laboratories, Inc. | San Francisco, California, United States Alan Stein | InterDigital Communications, Inc. | Princeton, New Jersey, United States