Grundig Digital Radio User Manual
DIGITAL RADIO GUIDE
TERRESTRIAL TRANSMISSION SYSTEMS - ISDB-TSB
35
4.3
Japan's Digital Radio Broadcasting (ISDB-TSB)
4.3.1
Overview
ISDB-TSB (Integrated Services Digital Broadcasting
– Terrestrial for Sound
Broadcasting) system was developed for terrestrial Digital Sound Broadcasting (DSB)
and was included in the ITU-R Recommendation BS.1114-3 in 2004. The system
specification was developed by the Association of Radio Industries and Businesses
(ARIB) in October 1998. Laboratory experiments and field trials using Tokyo Tower were
carried out to verify the system performance in 1999 and the final specification was
approved as a Japanese Standard in November 1999.
and was included in the ITU-R Recommendation BS.1114-3 in 2004. The system
specification was developed by the Association of Radio Industries and Businesses
(ARIB) in October 1998. Laboratory experiments and field trials using Tokyo Tower were
carried out to verify the system performance in 1999 and the final specification was
approved as a Japanese Standard in November 1999.
Two stations were launched in Tokyo and Osaka in the frequency band 188 MHz to 192
MHz in October 2003.
MHz in October 2003.
4.3.2
The Methods
A terrestrial TV broadcasting frequency band that fits for mobile communications, OFDM
(Orthogonal Frequency Division Multiplexing) that withstands interference caused by
multiple paths (delayed waves), a modulation method that fits for communications with
cell phones and mobile receivers, powerful error correction function, etc., have been
adopted to allow good communications with cell phones and mobile receivers.
(Orthogonal Frequency Division Multiplexing) that withstands interference caused by
multiple paths (delayed waves), a modulation method that fits for communications with
cell phones and mobile receivers, powerful error correction function, etc., have been
adopted to allow good communications with cell phones and mobile receivers.
Concerning information compression technology and multiplexing technology, MPEG-2
has been adopted after diverse compatible communications with digital broadcastings
(such as terrestrial digital TV broadcasting, BS digital broadcasting, CS digital
broadcasting) were considered. MPEG-2 offers a common base for signal processing,
which leads to reduction in the production cost of receivers by using LSI-chip and
consolidation of receivers as well as easy exchange of data with other media.
has been adopted after diverse compatible communications with digital broadcastings
(such as terrestrial digital TV broadcasting, BS digital broadcasting, CS digital
broadcasting) were considered. MPEG-2 offers a common base for signal processing,
which leads to reduction in the production cost of receivers by using LSI-chip and
consolidation of receivers as well as easy exchange of data with other media.
Since this broadcasting system has the common segment structure with terrestrial digital
TV broadcasting, the receivers can be consolidated.
TV broadcasting, the receivers can be consolidated.
(1)
Audio encoding system
MPEG-2 AAC (Advanced Audio Coding) and SBR (Spectral Band Replication)
have been adopted. However, SBR is optional.
have been adopted. However, SBR is optional.
This system satisfies the ITU-R standard, which enables high-quality multiple
channeling at a low bit rate of 144 kbps or so. It has been adopted by BS digital
broadcasting and terrestrial digital TV broadcasting. The adoption to the DSB
resulted from the consideration of cross-media communications.
channeling at a low bit rate of 144 kbps or so. It has been adopted by BS digital
broadcasting and terrestrial digital TV broadcasting. The adoption to the DSB
resulted from the consideration of cross-media communications.
(2)
Restricted reception system
MULTI2 system has been adopted.
A scramble system has been adopted for charged broadcasting. It is the MULTI2
system that has already been adopted for terrestrial digital TV broadcasting, BS
digital broadcasting, and CS digital broadcasting. The adoption to the DSB resulted
system that has already been adopted for terrestrial digital TV broadcasting, BS
digital broadcasting, and CS digital broadcasting. The adoption to the DSB resulted