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A digital broadcast wireless signal anti-fading transmission method

A technology for wireless signals and digital broadcasting, applied in digital transmission systems, transmission systems, and shaping networks in transmitters/receivers, etc., and can solve problems such as sub-channel orthogonality destruction, system performance deterioration, and signal distortion.

Inactive Publication Date: 2011-11-30
谌晓晴
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Problems solved by technology

[0003] 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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  • A digital broadcast wireless signal anti-fading transmission method
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  • A digital broadcast wireless signal anti-fading transmission method

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Embodiment Construction

[0034] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0035] A schematic diagram of an embodiment of signal transmission between a certain transmitter and a receiver of a digital broadcast wireless signal anti-fading transmission method according to the present invention, as shown in FIG. figure 1 shown, follow these steps:

[0036] 1) The digital broadcast wireless signal anti-fading 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;

[0037] 2) The certain digital broadcast wireless signal anti-fading transmitter passes its input data bit stream through RS coding (Reed-Solomon, RS), convolutional interleaving, LDPC coding (Low Density Parity Check, LDPC), symbol modulation, After symbol interleaving, an ...

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Abstract

The invention discloses an anti-fading digital broadcast wireless signal transmitting method, and relates to a time domain / frequency domain mixed scheme. The anti-fading digital broadcast wireless signal transmitting method has the advantages of low peak-to-average power ratio, short synchronization time, resistance to fading, controllable multiple services and the like.

Description

technical field [0001] The invention belongs to the field of wireless communication, and more specifically relates to a digital broadcast wireless signal anti-fading transmission method. Background technique [0002] Digital TV, digital broadcasting and wireless related technologies and related industries are industries with rapid development and good market prospects in the field of communication and computer. Digital broadcast wireless signal anti-fading transmitter transmission technology is the key technology of digital TV digital broadcast wireless system, which plays a decisive role in the performance of the whole system, and is the object of everyone's key research. Due to the rapid development of digital signal processing technology and integrated circuit technology, the system realization of Orthogonal Frequency Division Multiplexing (OFDM) technology becomes easier and easier. Because OFDM multi-carrier transmission technology has many advantages such as simple st...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04L25/03H04L1/00
Inventor 郑紫微徐铁峰聂秋华何加铭
Owner 谌晓晴
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