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

A technology of mobile broadcasting and framing modulation, applied in the direction of multi-frequency code system, etc., 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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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] Aiming at the high data rate controllable multi-service digital TV anti-noise multimedia mobile broadcasting problem, the present invention proposes a noise-resistant multimedia mobile broadcast signal framing modulation method

Method used

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  • Anti-noise multi-media mobile 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 mobile broadcasting signal framing modulation method proposed by the present invention, as figure 1 shown, follow these steps:

[0035] 1) The certain anti-noise multimedia mobile 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, symbol modulation and symbol rotation, and LDPC represents Low-density parity check, FFT bit-interleaved encoding modulation The length of the modulation data block is K, and the value of K is an even number; the encoding rate of LDPC encoding for LDPC encoding, bit interleaving, symbol modulation and symbol rotation processing on the input data is 1 One of / 4, 1 / 2, 5 / 8, 3 / 4 and 7 / 8, the bit interl...

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Abstract

The invention discloses an anti-noise multi-media mobile 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 mobile 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 a method for framing modulation of an anti-noise multimedia mobile broadcast signal. Background technique [0002] At present, television broadcasting has gradually developed from analog to digital. Digital TV multimedia mobile broadcasting transmission system, as an important part of digital TV multimedia mobile 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 mobile 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 mobile broadcasting, countries are currently focusing on how to provide low-cost, reliable and high-speed mobile implementatio...

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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