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Transmission method of anti-fading digital wireless broadcasting signals

A digital wireless broadcasting and signal transmission technology, applied in multi-frequency code systems and other directions, can solve the problems of signal distortion, sub-channel orthogonality destruction, system performance deterioration, etc., and achieve the effect of small amount of information and easy processing and recovery.

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

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Embodiment Construction

[0032] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0033] A schematic diagram of an embodiment of signal transmission between a transmitter and a receiver according to the anti-fading digital wireless broadcast signal transmission method proposed by the present invention, as shown in FIG. figure 1 shown, follow these steps:

[0034] 1) The certain anti-fading digital wireless 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;

[0035] 2) The certain anti-fading digital wireless broadcast signal transmitter forms its input data bit stream in the frequency domain after RS ​​coding, convolutional interleaving, multi-rate punctured convolutional coding, symbol modulation, and symbol interlea...

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Abstract

The invention discloses a transmission method of anti-fading digital wireless broadcasting signals. The transmission method is a framing modulation scheme with time domains and frequency domains being mixed. By means of the cascading interleaving coded modulation, the training sequence optimization design, the signal generating models and a signal selection method of the transmission method of the anti-fading digital wireless broadcasting signals, original signals of OFDM signals can be easily processed at a receiver end through processing and restoring, and the transmission method has the advantages of being low in PAPR, short in synchronous 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 digital wireless broadcast signal transmission 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 framing modulation t...

Claims

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Application Information

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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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