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Anti-noise multi-media wireless radio signal framing modulation method

A technology of wireless broadcasting and framing modulation, applied in the field of wireless communication, 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

[0016] Aiming at the problem of high data rate controllable multi-service digital TV anti-noise multimedia wireless broadcasting, the present invention proposes a framing modulation method for anti-noise multimedia wireless broadcasting signals

Method used

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  • Anti-noise multi-media wireless radio signal framing modulation method
  • Anti-noise multi-media wireless radio signal framing modulation method

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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-noise multimedia wireless broadcasting signal framing modulation method proposed by the present invention, as figure 1 shown, follow these steps:

[0035] 1) The certain anti-noise multimedia wireless broadcast signal transmitter forms an FFT bit interleaved coded modulation data block in the frequency domain after its input data bit stream undergoes LDPC encoding, bit interleaving, and symbol modulation. LDPC stands for Low Density Parity Correction According to the test, the length of the FFT bit interleaved coding modulation data block is K, and the value of K is an even number; the coding rate of the LDPC coding for the input data is 1 / 4, 1 / 2, 5 One of / 8, 3 / 4 and 7 / 8, the bit interleaving adopts random interleaving, the symbol modulation is one of QPSK, 16QAM, 32QAM, ...

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Abstract

The invention discloses an anti-noise multi-media wireless radio signal framing modulation method and relates to a hybrid framing modulation scheme of the time domain and the frequency domain. Due to the bit interleaved coded modulation mode, the training sequence optimization design, the signal generating scheme and the signal selection method of the anti-noise multi-media wireless radio signal framing modulation method, OFDM signals can be processed and recovered at a receiver end easily to obtain original signals of the OFDM signals, and the method has the advantages of being low in peak average power rate, 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-noise multimedia wireless broadcast signal framing modulation method. Background technique [0002] At present, television broadcasting has gradually developed from analog to digital. Digital TV multimedia wireless broadcasting transmission system, as an important part of digital TV multimedia wireless broadcasting, the development of its related technologies is closely related to people's quality of life, and therefore has received extensive attention from people. Digital TV multimedia wireless broadcasting related technologies 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 anti-noise multimedia wireless broadcasting, countries are currently focusing on how to provide low-cost, reliable and high-speed mobile implementati...

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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