Terminology » Other Wireless » DTMB vs. CMMB: Key Differences Explained

DTMB vs. CMMB: Key Differences Explained

dtmb cmmb broadcasting digital tv mobile tv

This article clarifies the differences between DTMB and CMMB, two multimedia broadcasting technologies prominent in the Republic of China.

Introduction

DTMB (Digital Terrestrial Multimedia Broadcast) and CMMB (China Multimedia Mobile Broadcasting) are both multimedia broadcasting technologies used in China. Let’s delve into what sets them apart.

DTMB serves as a digital TV standard suitable for both mobile and fixed devices. Conversely, CMMB is tailored for mobile TV and multimedia, developed specifically for mobile scenarios within China.

DTMB vs. CMMB: A Detailed Comparison

The following table highlights the key differences between DTMB and CMMB:

ParametersDTMBCMMB
Full NameDigital Terrestrial Multimedia BroadcastChina Multimedia Mobile Broadcasting
ModulationOFDM (1.5 MHz)OFDM (2/8 MHz)
ResolutionUp to high definition (1080i)Low definition (320p)
Usage/ApplicationTerrestrial and Mobile televisionMobile television
Frequency BandUHF and VHF Bands in MHz range2.6 GHz
ChannelsSD channels (6 to 15), HD channels (1 or 2)25 video channels, 30 audio channels
HDTV BroadcastSupportedNot supported as CMMB uses QCIF or QVGA
Typical Usage ScenarioLarge screen devices in fixed scenariosSmall screen devices in mobile scenarios