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Mobile multimedia broadcast transmission system

A mobile multimedia, transmission system technology, applied in the field of digital information transmission

Inactive Publication Date: 2010-08-11
TIMI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, the technical solutions proposed in the above application documents are usually mobile multimedia broadcast communications working within 8M or 2M bandwidth. With the rapid development of the global wireless communication industry, the contradiction between supply and demand of radio frequency resources has become increasingly prominent

Method used

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Embodiment Construction

[0071] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0072] Such as figure 1 As shown, the mobile multimedia broadcast transmission system proposed by the present invention includes: RS coding and byte interleaver, LDPC coder, bit interleaver, constellation mapper, frequency domain symbol generator, scrambler, IFFT converter, Time domain framer, transmitter.

[0073] Among them, the RS coding and byte interleaver is used to perform RS coding and byte interleaving on the upper layer data stream through the physical logical channel; the LDPC coder is used to perform LDPC coding on the data ...

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Abstract

The invention provides a mobile multimedia broadcast transmission system, which comprises a RS encoding and byte interleaver, an LDPC encoder, a bit interleaver, a constellation mapper, a frequency domain symbol generator, a scrambler, an IFFT converter, a time domain framing device and a transmitter. The system can provide high-quality mobile multimedia services for users within the 10MHz working bandwidth according to the technical scheme of the invention. In addition, a RS code can be optimally selected according to the working bandwidth of the system, a proper encoding mode can be selected according to different channel conditions and accordingly the byte interleaver can be optimized to adopt reasonable interleaving parameters for byte interleaver. The invention with the technical scheme can reasonably set and allocate the continuous pilot frequency, discrete pilot frequency and digital sub-carrier of the system according to the actual bandwidth of the system. Therefore, the mobile multimedia broadcast transmission system can reasonably set the system overhead and effectively utilize spectrum resources for data transmission.

Description

technical field [0001] The invention relates to the technical field of digital information transmission, in particular to a mobile multimedia broadcast sending system. Background technique [0002] At present, regardless of whether it is communication services in the wired or wireless field, multimedia services have become the main services operators provide to customers. Among them, in the field of wireless communication, wireless broadcast communication has the characteristics of wide coverage and large program capacity. Its biggest advantage is that it is broadcast, realizes point-to-multipoint, and has high transmission bandwidth under low-cost conditions. Therefore, as an important part of the information communication industry, wireless communication broadcasting plays an important role in the construction of national information infrastructure, the realization of universal service and the national information security strategy. [0003] Among various multimedia servi...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04L1/00
CPCH04L5/0064H04L27/2607H04L5/0044H04L5/005H04L5/0007
Inventor 陶涛葛啟宏白栋王静
Owner TIMI TECH
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