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A Robust Transmission Method for Digital Broadcasting Mobile Signals

A mobile signal and digital broadcasting technology, applied in the field of mobile communication, can solve problems such as system performance deterioration, signal spectrum changes, mutual interference, etc.

Inactive Publication Date: 2011-11-30
周洪晨
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The high peak-to-average power ratio (PAPR) of OFDM signals has high requirements on the linear range of amplifiers and digital-to-analog converters. If the linear range of the system cannot meet the signal changes, it will cause signal distortion and signal spectrum changes. , resulting in the destruction of the orthogonality between the sub-channels, resulting in mutual interference and deteriorating system performance

Method used

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  • A Robust Transmission Method for Digital Broadcasting Mobile Signals
  • A Robust Transmission Method for Digital Broadcasting Mobile Signals
  • A Robust Transmission Method for Digital Broadcasting Mobile Signals

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Embodiment Construction

[0034] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0035] A schematic diagram of an embodiment of signal transmission between a certain transmitter and a receiver according to the method for robust transmission of digital broadcast mobile signals proposed by the present invention, as shown in FIG. figure 1 shown, follow these steps:

[0036] 1) The certain digital broadcast mobile signal robust transmitter converts the multimedia data stream into a bit stream through a media data processor, and uses the scrambling code sequence generated by the feedback shift register to perform scrambling processing to form an input data bit stream;

[0037] 2) The certain digital broadcast mobile signal robust transmitter passes its input data bit stream through BCH coding (Bose Chaudhuri Hocquenghem, BCH), bit interleaving, LDPC coding (Low Density Parity Check, LDPC), symbol modulation and code After elem...

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Abstract

The invention discloses a robust transmission method of digital broadcast mobile signals, which is a mixed transmission scheme of time domain and frequency domain. The method has the advantages of low PAPR (peak-to-average power ratio), short synchronous time, robustness, multiple controllable services and the like.

Description

technical field [0001] The invention belongs to the field of mobile communication, and more specifically relates to a method for robust transmission of digital broadcast mobile signals. Background technique [0002] Digital TV, digital broadcasting, mobile related technologies and related industries are industries with rapid development and good market prospects in the field of communication and computer. Digital broadcasting mobile signal robust transmitter transmission technology is the key technology of digital TV digital broadcasting mobile system, which plays a decisive role in the performance of the whole system and is the object of everyone's key research. Due to the rapid development of digital signal processing technology and integrated circuit technology, the system realization of Orthogonal Frequency Division Multiplexing (OFDM) technology becomes easier and easier. Because OFDM multi-carrier transmission technology has many advantages such as simple structure, h...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04L25/03H04L1/00
Inventor 郑紫微徐铁峰聂秋华何加铭
Owner 周洪晨
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