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Digital broadcasting mobile signal anti-fading transmission method

A mobile signal and digital broadcasting technology, applied in digital transmission systems, transmission systems, electrical components, etc., can solve problems such as signal distortion, sub-channel orthogonality destruction, mutual interference, etc., and achieve a small amount of information and easy processing and recovery Effect

Inactive Publication Date: 2014-05-07
NINGBO UNIV
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  • Abstract
  • Description
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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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  • Digital broadcasting mobile signal anti-fading transmission method
  • Digital broadcasting mobile signal anti-fading transmission method

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Embodiment Construction

[0031] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0032] A schematic diagram of an embodiment of signal transmission between a certain transmitter and a receiver of a digital broadcast mobile signal anti-fading transmission method according to the present invention, as shown in FIG. figure 1 shown, follow these steps:

[0033] 1) The digital broadcast mobile signal anti-fading 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;

[0034] 2) The anti-fading transmitter of a digital broadcasting mobile signal forms an FFT level in the frequency domain after its input data bit stream undergoes RS coding, convolutional interleaving, LDPC coding, symbol modulation, symbol rotation, and symbol interleaving Con...

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Abstract

The invention discloses a digital broadcasting mobile signal anti-fading transmission method which is a time domain and frequency domain mixed type framing modulation scheme. According to the training sequence optimization design, signal generation mode and signal selection method of the digital broadcasting mobile signal anti-fading transmission method of the invention, original signals of OFDM signals can be easily processed, recovered and obtained at the receiver side, so advantages, such as low peak-to-average power ratio, short synchronization time, good channel anti-fading performance, multi-service controllability etc., can be realized.

Description

technical field [0001] The invention belongs to the field of wireless communication, and more particularly relates to an anti-fading transmission method for digital broadcast mobile signals. Background technique [0002] At present, TV broadcasting has gradually developed from analog to digital. Digital TV digital broadcasting wireless transmission system, as an important part of digital TV digital broadcasting wireless, 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 digital broadcasting wireless technology and its related industries are fast-developing industries in the field of communications and computers, with good market prospects. In terms of DTV digital broadcasting wireless technology, the current focus of various countries is how to provide a low-cost, reliable and high-speed mobile implementation scheme for DTV digital broadcasting wireless in a comp...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04L1/00
Inventor 郑紫微刘哲何晨晖熊欧吴明昊潘洋
Owner NINGBO UNIV
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