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A framing modulation method for anti-jamming multimedia wireless broadcasting signal

A wireless broadcasting and multimedia technology, applied in multi-frequency code system, shaping network in transmitter/receiver, digital transmission system, etc., can solve problems such as system performance deterioration, signal spectrum change, mutual interference, etc.

Inactive Publication Date: 2011-12-07
孙波
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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 framing modulation method for anti-jamming multimedia wireless broadcasting signal
  • A framing modulation method for anti-jamming multimedia wireless broadcasting signal
  • A framing modulation method for anti-jamming multimedia wireless broadcasting signal

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Embodiment Construction

[0033] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] According to an embodiment of a certain transmitter of the anti-jamming multimedia wireless broadcast signal framing modulation method proposed by the present invention, as figure 1 shown, follow these steps:

[0035] 1) The certain anti-jamming multimedia wireless broadcasting signal transmitter passes its input data bit stream through RS encoding, convolutional interleaving, serial concatenated multi-code rate punctured convolutional encoding, symbol modulation, and symbol interleaving in the In the frequency domain, an FFT concatenated interleaved coding modulation data block is formed, and FFT means fast discrete Fourier transform. The length of the FFT concatenated interleaving coding modulation data block is K; The code is formed by random interleaving serial concatenation puncture, and the coding rate of serial concatenation mul...

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Abstract

The invention discloses an anti-interference multimedia wireless broadcast signal framing modulation method, which is a time domain / frequency domain hybrid framing modulation scheme. The anti-interference multimedia wireless broadcast signal framing modulation method has the advantages of low peak-to-average power ratio, short synchronization time, anti-interference performance, multi-service controllability and the like.

Description

technical field [0001] The invention belongs to the field of wireless communication, and more specifically relates to an anti-jamming multimedia wireless broadcast signal framing modulation method. Background technique [0002] The technology related to digital TV broadcasting 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 broadcasting, countries are currently focusing on how to provide low-cost, reliable and high-speed mobile solutions for digital TV broadcasting in a complex wave propagation environment. The framing modulation technology is the key technology of the digital TV broadcasting system, plays a decisive role in the performance of the whole system, and is the object of everyone's key research. [0003] Due to the rapid development of digital signal processing technology and integrated circuit technology, the system realization of Ort...

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 孙波
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