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Robust method for transmitting wireless digital broadcast signal

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

Inactive Publication Date: 2011-11-23
房兆辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Robust method for transmitting wireless digital broadcast signal
  • Robust method for transmitting wireless digital broadcast signal
  • Robust method for transmitting wireless digital broadcast signal

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Embodiment Construction

[0035] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] According to a schematic diagram of an embodiment of signal transmission between a transmitter and a receiver of the robust wireless digital broadcast signal transmission method proposed by the present invention, as shown in figure 1 shown, follow these steps:

[0037] 1) This certain robust wireless digital broadcasting signal transmitter converts the multimedia data stream into a bit stream through a media data processor, and utilizes the scrambling code sequence generated by the feedback shift register to perform scramble processing to form an input data bit stream;

[0038] 2) The certain robust wireless digital broadcasting signal transmitter forms FFT concatenated interleaving coded modulation data in the frequency domain after passing its own input data bit stream through BCH coding, bit interleaving, LDPC coding, symbol modulation...

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Abstract

The invention discloses a robust method for transmitting a wireless digital broadcast signal, which is a transmission proposal of time domain and frequency domain mixing. The robust method for transmitting a wireless digital broadcast signal disclosed by the invention has the advantages of low peak-to-average power ratio, short synchronization time, robustness, controllable multi-service etc.

Description

technical field [0001] The invention belongs to the field of wireless communication, and more particularly relates to a robust wireless digital broadcast signal transmission method. Background technique [0002] At present, TV 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 its related industries are rapidly developing industries in the field of communications and computers, with good market prospects. In terms of the related technologies of digital TV broadcasting, the current focus of various countries is how to provide a low-cost, reliable and high-speed mobile solution for digital TV broadcasting in a complex wave propagation environment. Transmission technology...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L25/03H04L1/00
Inventor 郑紫微徐铁峰聂秋华何加铭
Owner 房兆辉
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