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Receiver for ground mobile multimedia broadcast, receiving apparatus and method

A technology of mobile multimedia and receiving device, applied in the field of digital information transmission, can solve the problem that no receiver is proposed

Inactive Publication Date: 2009-01-28
NUFRONT MOBILE COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Currently, no explicit receiver for T-MMB has been proposed

Method used

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  • Receiver for ground mobile multimedia broadcast, receiving apparatus and method
  • Receiver for ground mobile multimedia broadcast, receiving apparatus and method
  • Receiver for ground mobile multimedia broadcast, receiving apparatus and method

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Embodiment Construction

[0018] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0019] T-MMB is a digital multimedia broadcasting method based on the expansion of multimedia services in the digital audio broadcasting DAB system. It integrates the latest technologies and considers frequency resources, receiver complexity, spectrum utilization and system performance. Realization: fully compatible with DAB, low-cost design, low power consumption design, good frequency point availability, support for mobile reception, single frequency network implementation, high spectrum efficiency, multi-service, high-quality service, etc. T-MMB has the following characteristics:

[0020] (1) T-MMB has the technical advantage of reliably receiving signals in a high-speed mobile environment, and functionally expands the transmission of single audio in...

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Abstract

The invention provides a receiver used for T-MMB, comprising a radio frequency demodulating unit, a synchronizing unit, an OFDM demodulating unit and a demodulating and decoding unit, wherein the radio frequency demodulating unit carries out radio frequency demodulation to a received signal; the synchronizing unit identifies the transmission mode and the synchronous position of the signal from the radio frequency demodulating unit; the OFDM demodulating unit extracts a phase reference symbol, an FIC symbol and a data symbol in the signal from the radio frequency demodulating unit according to the transmission mode and the synchronous position, carries out OFDM demodulation and decoding to the FIC symbol to obtain FIC information, and carries out OFDM demodulation to the data symbol in a corresponding sub-signal channel according to sub-signal indication information; and the demodulating and decoding unit carries out differential demodulation to the data symbol which is subjected to the OFDM demodulation, carries out time domain deinterleaving to the data symbol which is subjected to the differential demodulation according to the indication of the FIC information, and carries out forward error correction decoding to the data symbol which is subjected to the time domain deinterleaving. The invention also discloses a receiving device and a receiving method used for T-MMB.

Description

technical field [0001] The present invention relates to digital information transmission technology, in particular to a receiver for Terrestrial Mobile Multimedia broadcasting (T-MMB), a receiving device for T-MMB, and a receiving method for T-MMB. Background technique [0002] Digital multimedia broadcasting refers to the multimedia broadcasting method used for handheld terminals. At present, the digital multimedia broadcasting technology that has attracted more attention in the industry is Digital Video Broadcasting Handheld (DVB-H) technology, terrestrial digital multimedia broadcasting (Terrestrial Digital Multimedia Broadcasting, T-DMB) technology, and T-MMB technology. [0003] figure 1 A T-MMB sending device 100 is shown, and the T-MMB sending device 100 includes: a plurality of low density parity check (Low Density Parity Check, LDPC) encoding units S11 and time domain interleaving unit S12, a main service Channel multiplexing unit S13, a punctured convolutional co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L27/26
CPCH04L27/2601H04L27/2331H04L1/004H04L27/2649H04L27/26H04B1/06H03M13/00H04N5/44
Inventor 鲍东山王加庆朱浩刘飞程琦
Owner NUFRONT MOBILE COMM TECH