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

A technology of multimedia broadcasting and framing modulation, which is applied in multi-frequency code systems and other directions to 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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] Aiming at the problem of high data rate controllable multi-service digital TV anti-jamming wireless multimedia broadcasting, the present invention proposes an anti-jamming wireless multimedia broadcasting signal framing modulation method

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

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

[0033] 1) The certain anti-jamming wireless multimedia broadcasting signal transmitter forms an FFT bit-interleaved coded modulation data block in the frequency domain after undergoing multi-rate punctured convolutional coding, bit interleaving, and symbol modulation of its input data bit stream, The length of the FFT bit interleaved coding modulation data block is K; the coding rate of the multi-code rate punctured convolutional coding for the input data is 1 / 4, 1 One of / 2, 5 / 8, 3 / 4 and 7 / 8, bit interleaving adopts random interleaving, symbol modulation is one of QPSK, 16QAM, 32QAM, 64QAM, 64APSK, 256APSK, 1024APSK, symbol ...

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Abstract

The invention discloses an anti-interference framing and modulating method for multimedia wireless 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 wireless radio signals comprises the steps of bit-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 wireless 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 wireless multimedia broadcasting 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 fr...

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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