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Transmission method of anti-fading mobile digital broadcasting signals

A technology for mobile digital and broadcast signals, applied in digital transmission systems, transmission systems, electrical components, etc., can solve problems such as sub-channel orthogonality destruction, signal distortion, system performance deterioration, etc., and achieve easy processing and recovery, and small amount of information Effect

Inactive Publication Date: 2014-05-07
NINGBO UNIV
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  • Summary
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  • Description
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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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  • Transmission method of anti-fading mobile digital broadcasting signals
  • Transmission method of anti-fading mobile digital broadcasting signals

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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] A schematic diagram of an embodiment of signal transmission between a certain transmitter and a receiver according to the anti-fading mobile digital broadcasting signal transmission method proposed by the present invention, as shown in FIG. figure 1 shown, follow these steps:

[0035] 1) The certain anti-fading mobile digital broadcast signal transmitter converts the multimedia data stream into a bit stream through a media data processor, and uses the scrambling code sequence generated by the feedback shift register to perform scrambling processing to form an input data bit stream;

[0036] 2) The certain anti-fading mobile digital broadcast signal transmitter forms an FFT level in the frequency domain after its input data bit stream undergoes RS coding, convolutional interleaving, LDPC coding, symbol modulation, symbol rotation, and sy...

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Abstract

The invention discloses a transmission method of anti-fading mobile digital broadcasting signals. The transmission method is a framing modulation scheme with time domains and frequency domains being mixed. By means of the training sequence optimization design, the signal generating models and a signal selection method of the transmission method of the anti-fading mobile digital broadcasting signals, original signals of OFDM signals can be easily obtained at a receiver end through processing and restoring, and the transmission method has the advantages of being low in PAPR, short in synchronization time, channel fading resistant, capable of controlling multiple services, and the like.

Description

technical field [0001] The invention belongs to the field of wireless communication, and more specifically relates to an anti-fading mobile digital broadcast signal transmission method. Background technique [0002] At present, television broadcasting has gradually developed from analog to digital. Digital TV anti-fading mobile digital broadcast transmission system is an important part of digital TV anti-fading mobile digital broadcasting. The development of its related technologies is closely related to people's quality of life, and therefore has received extensive attention. Digital TV anti-fading mobile digital 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-fading mobile digital broadcasting, countries are currently focusing on how to provide low-cost, reliable and high-speed mobile implementation soluti...

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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