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Anti-interference mobile signal transmission method for digital broadcast

A mobile signal and digital broadcasting technology, applied in multi-frequency code systems and other directions, can solve the problems of sub-channel orthogonality destruction, signal distortion, system performance deterioration, etc., and achieve the effect of easy processing and recovery and small amount of information

Inactive Publication Date: 2014-04-30
NINGBO UNIV
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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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  • Anti-interference mobile signal transmission method for digital broadcast
  • Anti-interference mobile signal transmission method for digital broadcast

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Embodiment Construction

[0032] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0033] A schematic diagram of an embodiment of signal transmission between a transmitter and a receiver in the anti-interference transmission method for digital broadcasting mobile signals according to the present invention, such as figure 1 As shown, proceed as follows:

[0034] 1) The certain digital broadcasting mobile signal anti-jamming transmitter converts the multimedia data stream into a bit stream through the 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;

[0035] 2) The certain digital broadcasting mobile signal anti-jamming transmitter flows its input data bits through multi-rate punctured convolution coding, bit interleaving, symbol modulation and symbol rotation to form FFT bit interleaving coding in the frequency ...

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Abstract

The invention discloses an anti-interference mobile signal transmission method for a digital broadcast, and relates to a mixed framing modulation scheme of the time domain and the frequency domain. According to the training sequence optimization design, the signal generating scheme and the signal selecting method of the anti-interference mobile signal transmission method for the digital broadcast, OFDM signals can be processed and recovered at a receiver end easily to obtain original signals of the OFDM signals. The anti-interference mobile signal transmission method for the digital broadcast has the advantages of being low in peak-to-average power ratio, short in synchronization time, resistant to channel fading, multiple in controllable service and the like.

Description

Technical field [0001] The invention belongs to the field of wireless communication, and more particularly relates to an anti-jamming transmission method of digital broadcasting mobile signals. Background technique [0002] At present, television 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 technology is closely related to people's quality of life, and therefore has attracted special attention. Digital TV, digital broadcasting and wireless-related technologies and related industries are industries that develop rapidly in the field of communications and computers and have good market prospects. With regard to digital TV and digital broadcasting wireless technologies, the current focus of various countries is how to provide low-cost, reliable and high-speed mobile implementation solutions for digital TV and d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26
Inventor 郑紫微刘哲何晨晖熊欧吴明昊潘洋
Owner NINGBO UNIV
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