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

A technology for multimedia broadcasting and wireless 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, signal distortion, and signal spectrum changes

Inactive Publication Date: 2011-12-28
广德睿纳鲜果酒业有限公司
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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 wireless signals
  • A method for anti-jamming framing modulation of multimedia broadcasting wireless signals
  • A method for anti-jamming framing modulation of multimedia broadcasting wireless 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 broadcast wireless signal anti-jamming framing modulation method proposed in the present invention, as figure 1 shown, follow these steps:

[0033] 1) The certain multimedia broadcast wireless signal anti-jamming transmitter forms an FFT bit-interleaved coded modulation data block in the frequency domain after undergoing multi-rate punctured convolutional coding, bit interleaving, and symbol modulation of its input data bit stream, FFT stands for Fast Discrete Fourier Transform, and the length of FFT bit-interleaving coded modulation data block is K; multi-code-rate punctured convolutional coding is performed on the input data, bit-interleaved, and coded by symbol modulation. The rate is one of 1 / 4, 1 / 2, 5 / 8, 3 / 4 and 7 / 8, the bit interleaving adopts random interleavi...

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Abstract

The invention discloses a multimedia broadcasting wireless signal anti-interference framing modulation method which is a time domain and frequency domain mixed framing modulation scheme. The multimedia broadcasting wireless signal anti-interference framing modulation method provided by the invention has the advantages of low peak average power ratio, short synchronizing time, anti-interference, capability 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-interference framing modulation method of a multimedia broadcast wireless signal. Background technique [0002] Digital TV multimedia broadcasting wireless related technologies and related industries are industries with rapid development and good market prospects in the field of communication and computer. Multimedia broadcast wireless signal anti-jamming transmitter framing modulation technology is the key technology of digital TV multimedia broadcast wireless 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 广德睿纳鲜果酒业有限公司
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