Anti-interference framing modulation method for wireless signals of multimedia broadcast

A multimedia broadcasting and wireless signal technology, applied in the field of wireless communication, achieves 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

AI Technical Summary

Problems solved by technology

[0014] Aiming at the problem of high data rate controllable multi-service digital TV anti-jamming wireless multimedia broadcasting, the present invention proposes a multimedia broadcasting wireless signal anti-jamming framing modulation method

Method used

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  • Anti-interference framing modulation method for wireless signals of multimedia broadcast
  • Anti-interference framing modulation method for wireless signals of multimedia broadcast

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Embodiment Construction

[0030] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] According to an embodiment of a certain transmitter of the multimedia broadcast wireless signal anti-jamming framing modulation method proposed in the present invention, as figure 1 shown, follow these steps:

[0032] 1) The certain multimedia broadcast wireless signal anti-jamming 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 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 constellat...

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Abstract

The invention discloses an anti-interference framing modulation method for wireless signals of a multimedia broadcast, and relates to a mixed framing modulation scheme of the time domain and the frequency domain. According to the bit interleaved coded modulation, the training sequence optimization design, the signal generating scheme and the signal selecting method of the anti-interference framing modulation method for the wireless signals of the multimedia broadcast, OFDM signals can be processed and recovered at a receiver end easily to obtain original signals of the OFDM signals. The anti-interference framing modulation method for the wireless signals of the multimedia 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 specifically relates to an anti-interference framing modulation method of a multimedia broadcast wireless signal. 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 ...

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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