Advanced Terrestrial Broadcasting Technology

Research into transmission technology for ultra-high-definition television terrestrial broadcasting

Verifying advanced terrestrial broadcasting technology

We are pursuing research into next-generation terrestrial television broadcasting systems. In particular, we are developing video/audio coding, multiplexing, and channel coding methods for ultra-high-definition television (UHDTV) broadcasting and an advanced service combining broadcast and broadband transmissions through as part of a program of the Ministry of Internal Affairs and Communications called Technical Examination Services*1 for hastening the introduction of cutting-edge radio-wave technologies.

Verification schedule for advanced terrestrial broadcasting system*2

1. Experimental verification on channel coding methods

We are developing transmission systems for providing UHDTV terrestrial broadcasting for fixed reception simultaneously with high-definition television (HDTV) broadcasting for mobile reception over a single channel bandwidth (6 MHz). Our evaluations of fixed and mobile reception characteristics are being conducted in a variety of reception environments at experimental test stations in Tokyo, Osaka, Nagoya, and Fukuoka.

2. Experimental verification on multiplexing methods for combining broadcast and broadband content

The advanced service that combines broadcast and broadband content will require efficient multiplexing methods and content distribution methods. To this end, we are prototyping transmission and reception systems and conducting broadcasting verification experiments that involve broadcasting as well as delivery of broadband content via IP multicasting.

3. Video/audio coding methods

We are proceeding with development of encoder/decoder that supports VVC (Versatile Video Coding*3) and MPEG-H 3D Audio Baseline (BL) profile*4 for a high-quality high-functionality video/audio service that supports a variety of viewing styles.

  1. The latest video encoding method. Standardization was completed in July 2020.
  2. The latest profile, which offers lighter implementation load than the Low Complexity (LC) profile. Standardization was completed in January 2021.

Part of this research was conducted under contract as part of a Technical Examination Services project called "Development of Technology for Effective Use of Broadcast Frequencies" that was entrusted to the Association for Promotion of Advanced Broadcasting Services (A-PAB).

The real-time audio encoder/decoder that supports the MPEG-H 3D Audio BL profile is being developed in collaboration with the Fraunhofer Institute for Integrated Circuits.