A method for robust transmission of digital broadcast wireless signals

A wireless signal and digital broadcasting technology, applied in digital transmission systems, transmission systems, shaping networks in transmitters/receivers, etc., can solve problems such as sub-channel orthogonality destruction, mutual interference, and system performance deterioration

Inactive Publication Date: 2011-11-30
王运国
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  • Abstract
  • Description
  • Claims
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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 method for robust transmission of digital broadcast wireless signals
  • A method for robust transmission of digital broadcast wireless signals
  • A method for robust transmission of digital broadcast wireless 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 transmitter and a receiver according to the method for robust transmission of digital broadcast wireless signals proposed by the present invention, as shown in FIG. figure 1 shown, follow these steps:

[0036] 1) The certain digital broadcast wireless 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 wireless 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, code After element i...

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Abstract

The invention discloses a robust transmission method for digital broadcasting wireless signals, which is a time domain and frequency domain hybrid transmission scheme. The method has the advantages of low peak-to-average power ratio, short synchronous time, robustness, controllability in multiple services and the like.

Description

technical field [0001] The invention belongs to the field of wireless communication, and more specifically relates to a method for robust transmission of digital broadcast wireless signals. Background technique [0002] Digital TV, digital broadcasting and wireless related technologies and related industries are industries with rapid development and good market prospects in the field of communication and computer. Digital broadcast wireless signal robust transmitter transmission technology is the key technology of digital TV digital broadcast wireless 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 stru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L25/03H04L1/00
Inventor 郑紫微徐铁峰聂秋华何加铭
Owner 王运国
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