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System and method for realizing wireless digital TV-set broadcast

A digital TV broadcasting and wireless technology, applied in the direction of analog security/charging system, pulse modulation TV signal transmission, etc., can solve the problems of signal fading, complicated radio wave propagation, degradation of terminal reception performance, etc., to improve reception performance, ensure video quality effect

Inactive Publication Date: 2007-06-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the propagation of the transmitted radio waves is very complicated, there are generally many factors such as the multi-channel effect and the Doppler effect, and the signal will undergo various fading, resulting in a decline in the receiving performance of the terminal.
[0006] It can be seen that in the existing wireless digital broadcasting system technology, there is no system and method that can improve the receiving performance of the terminal

Method used

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  • System and method for realizing wireless digital TV-set broadcast
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  • System and method for realizing wireless digital TV-set broadcast

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Embodiment Construction

[0045] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] The wireless digital TV broadcasting system in the present invention at least includes: a broadcasting station subsystem, a central wireless digital TV broadcasting transmitter, one or more remote transmitting modules, and a user terminal.

[0047] Among them, the broadcast station subsystem is used to scramble and multiplex the video data to obtain the video transmission stream.

[0048] The central wireless digital TV broadcasting transmitter is used for baseband processing of the video transmission stream input by the broadcasting station subsystem, signal transmission processing including the space transmission diversity modulation function, generating two signals, and transmitting the first signal from its own antenna, Send ...

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Abstract

The key ideal of invention is: the central radio digital TV broadcast transmitter uses spatial transmission diversity technique to divide video transmission stream into two-way signals that are transmitted by two antennas; the broadcast station subsystem firstly processes the video data into video transmission stream; the central radio digital broadcast transmitter makes process for the video transmission stream, which including the transmission process for signals having spatial transmission diversity modulation function, to generate two-way signals; the first way signals are transmitted by using its own antenna, and the second way signals are transmitted by the transmitting module of a remote end. When the user end receives two way signals, it makes receiving process and baseband backward process for the signals having spatial transmission diversity demodulation function to get video data.

Description

technical field [0001] The present invention relates to wireless digital broadcasting technology, in particular to a system and method for realizing wireless digital TV broadcasting. Background technique [0002] With the development of digital technology, the wireless digital broadcasting system can provide rich digital broadcasting TV programs to user terminals. [0003] Figure 1 is a typical wireless digital TV broadcasting system. As shown in Figure 1, a wireless digital TV broadcasting system generally includes: a broadcasting station subsystem, a wireless digital TV transmitter, and user terminals. [0004] Among them, the broadcast station subsystem is used to scramble and multiplex the program data provided by the content provider to obtain the video transport stream (TS), and output the TS stream to the wireless digital TV transmitter; the wireless digital TV transmitter The TS stream is first processed with baseband to obtain a digital baseband signal, and then t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/24H04N7/16
Inventor 张毅
Owner HUAWEI TECH CO LTD
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