Didital Multimedia Broadcastin

DMB is a new concept of multimedia mobile radio service that combines communications and broadcasting. It is also known as the 3rd generation of radio broadcasting. In addition to supporting traditional audio broadcasting, the technology will be able to transmit a wide range of multimedia information such as traffic information and news to mobile phones via MPEG-4H.264 and MPEG-2, AAC+, etc., providing high quality sound and diverse data services. It also uses the same CDM (CodeDivisionMultiplexing) technology as mobile phones, making it particularly suitable for mobile reception environments and better able to cope with multi-path interference problems that degrade signal quality in mobile reception environments.
Introduction
DigitalMultimedia Broadcasting System
DMB stands for DigitalMultimediaBroadcasting, a new concept of multimedia mobile broadcasting service that integrates communication and broadcasting. It is also known as the 3rd generation of radio broadcasting, and the technology will support traditional audio broadcasting, but also through MPEG-4H.264 and MPEG-2, AAC + and other methods, traffic information and news, a variety of multimedia information transmission to the mobile phone, providing high-quality sound and diverse data services. It also uses the same CDMCodeDivisionMultiplexing technology as mobile phones, which is particularly suitable for mobile reception environments and can better cope with multi-path interference, which degrades signal quality in mobile reception environments.
Advantages
DMB means that the digitised audio signal and various data service signals are digitally encoded, modulated and transmitted in a variety of states. Because of these unique advantages of digital technology, the introduction or replacement of existing analogue systems has greatly changed the technical operating environment of existing systems and improved the overall technical performance of the system to achieve operational quality and requirements that cannot be achieved by existing analogue technology.