학술논문
Study on hierarchical transmission toward the advanced ISDB-T development : – Comparison of FDM with LDM –
Document Type
Conference
Author
Source
2019 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB) Broadband Multimedia Systems and Broadcasting (BMSB), 2019 IEEE International Symposium on. :1-5 Jun, 2019
Subject
Language
ISSN
2155-5052
Abstract
In Japan, the next generation of the Integrated Services Digital Broadcasting-Terrestrial (ISDB-T) system is being developed to transmit large-volume content services such as ultra-high definition television (UHDTV). Since 2016, we have been researching and developing transmission systems for terrestrial broadcasting as part of the research program “Research and Development for advanced Digital Terrestrial Television Broadcasting System”, under the auspices of the Ministry of Internal Affairs and Communications, Japan. The transmission system studied in this program is called “advanced ISDB-T”. The transmission performance of the advanced ISDB-T is better than that of ISDB-T. The advanced ISDB-T has been considered to adopt frequency division multiplexing (FDM) for the baseline of hierarchical transmission to transmit mobile services and fixed services in one channel. However, layered division multiplexing (LDM), which can improve spectrum efficiency, has been also studied. In this paper, we compare FDM with LDM, adopt a new signal structure, modulation, and forward error collection (FEC) studied in the development of the advanced ISDB-T. Finally, we clarify how multiplexing technology could affect both mobile- and fixed-layer transmission.