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A digital wireless broadcasting signal transmission method

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

Inactive Publication Date: 2011-12-21
杜学范
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Problems solved by technology

[0004] 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 digital wireless broadcasting signal transmission method
  • A digital wireless broadcasting signal transmission method
  • A digital wireless broadcasting signal transmission method

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Embodiment Construction

[0035] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0036] A schematic diagram of an embodiment of signal transmission between a certain transmitter and a receiver according to the digital wireless broadcasting signal transmission method proposed by the present invention, as shown in FIG. figure 1 shown, follow these steps:

[0037] 1) The certain digital wireless broadcast signal 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;

[0038] 2) The certain digital wireless broadcasting signal transmitter forms an FFT encoded data block in the frequency domain by serially cascading multi-rate punctured convolution encoding of its input data bit stream, FFT stands for Fast Discrete Fourier Transform, and FFT ...

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Abstract

The invention discloses a digital radio broadcast signal transmission method which is a transmission scheme of mixing a time domain and a frequency domain. According to the digital radio broadcast signal transmission method disclosed by the invention, a low-complexity peak-to-average power ratio reduction technology, a serially concatenated multi-code rate punctured convolution code modulation technology and a signal frame time-frequency domain combined iteration separation treatment technology are designed aiming at the technical problems of high signal peak-to-average power ratio and channel fading noises of a broadband multi-carrier digital radio broadcast transmission system, which need to be solved, and therefore the broadband multi-carrier digital radio broadcast transmission systemhas the advantages of low peak-to-average power ratio, short synchronization time, fading noise influence resistance, controllable multi-service, and the like.

Description

technical field [0001] The invention belongs to the field of wireless communication, and more specifically relates to a digital wireless broadcast signal transmission method. Background technique [0002] At present, television broadcasting has gradually developed from analog to digital. Digital TV wireless multimedia broadcasting transmission system, as an important part of digital TV wireless multimedia broadcasting, the development of its related technologies is closely related to people's quality of life, and therefore has received extensive attention from people. Digital TV wireless multimedia broadcasting related technologies and related industries are industries with rapid development and good market prospects in the field of communication and computer. In terms of technologies related to digital TV and digital wireless broadcasting, the current focus of various countries is how to provide low-cost, reliable and high-speed mobile implementation solutions for digital ...

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 杜学范
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