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Anti-interference framing and modulating method for multimedia mobile radio signals

A mobile broadcasting and framing modulation technology, applied in the field of wireless communication, can solve problems such as signal distortion, sub-channel orthogonality destruction, mutual interference, etc., and achieve the effect of small amount of information and easy processing and recovery

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 framing and modulating method for multimedia mobile radio signals
  • Anti-interference framing and modulating method for multimedia mobile radio signals

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Embodiment Construction

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

[0033] According to an embodiment of a certain transmitter of the anti-jamming multimedia mobile broadcasting signal framing modulation method proposed by the present invention, as figure 1 shown, follow these steps:

[0034] 1) The certain anti-jamming multimedia mobile broadcasting signal transmitter passes its input data bit stream through RS coding, convolutional interleaving, serial concatenated multi-code rate punctured convolutional coding, symbol modulation and symbol rotation, code After element interleaving, an FFT concatenated interleaved coded modulation data block is formed in the frequency domain, RS means Reed-Solomon, and the length of the FFT concatenated interleaved coded modulated data block is K; the serial concatenated multi-code rate puncturing of the input data Convolutional coding is formed by two convolutional codes t...

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Abstract

The invention discloses an anti-interference framing and modulating method for multimedia mobile radio signals and relates to a framing modulation scheme for mixing a time domain and a frequency domain. The anti-interference framing and modulating method for the multimedia mobile radio signals comprises the steps of cascade-interleaved coded modulation, training sequence optimization design, signal generation pattern selection and signal selection. In this way, original signals of OFDM signals can be easily obtained through processing and restoring at a receiver end. Besides, the anti-interference framing and modulating method for the multimedia mobile radio signals has the advantages that the peak-to-average power ratio is low, synchronization time is short, channel fading is resisted, and multiple services can be controlled.

Description

technical field [0001] The invention belongs to the field of wireless communication, and more specifically relates to an anti-interference multimedia mobile broadcast signal framing modulation method. Background technique [0002] At present, television broadcasting has gradually developed from analog to digital. Digital TV broadcasting transmission system, as an important part of digital TV broadcasting, the development of its related technologies is closely related to people's quality of life, and therefore has received extensive attention from people. 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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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