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A method for anti-jamming framing modulation of multimedia broadcasting mobile signals

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

Inactive Publication Date: 2011-12-14
天津中新众信智能科技有限公司
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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 method for anti-jamming framing modulation of multimedia broadcasting mobile signals
  • A method for anti-jamming framing modulation of multimedia broadcasting mobile signals
  • A method for anti-jamming framing modulation of multimedia broadcasting mobile signals

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Embodiment Construction

[0031] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0032] According to an embodiment of a certain transmitter of the multimedia broadcasting mobile signal anti-jamming framing modulation method proposed in the present invention, as figure 1 shown, follow these steps:

[0033] 1) The anti-jamming transmitter for a certain multimedia broadcasting mobile signal forms an FFT bit interleaving code in the frequency domain after undergoing multi-rate punctured convolutional coding, bit interleaving, symbol modulation and symbol rotation on its input data bit stream Modulation data block, FFT stands for Fast Discrete Fourier Transform, FFT bit interleaving coding modulation data block length is K; multi-code for multi-code rate punctured convolutional coding, bit interleaving, symbol modulation and symbol rotation processing on input data The coding rate of rate punctured convolutional coding is one ...

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Abstract

The invention discloses a multimedia broadcast mobile signal anti-interference framing modulation method and in particular relates to a framing modulation scheme with mixing of time domains and frequency domains. The multimedia broadcast mobile signal anti-interference framing modulation method has the advantages that the peak-average power ratio is low, the synchronization time is short, the interference resistance is achieved, and the multiple services can be controlled and the like.

Description

technical field [0001] The invention belongs to the field of mobile communication, and more specifically relates to an anti-interference framing modulation method of a multimedia broadcast mobile signal. Background technique [0002] Digital TV, multimedia broadcasting, mobile-related technologies and related industries are industries with rapid development and good market prospects in the field of communications and computers. Multimedia broadcasting mobile signal anti-jamming transmitter framing modulation technology is the key technology of digital TV multimedia broadcasting mobile system, which plays a decisive role in the performance of the whole system and is the focus of everyone's 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 ad...

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 天津中新众信智能科技有限公司
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