Method for framing and modulating anti-fading wireless multimedia broadcast signals
A multimedia broadcasting and anti-fading technology, applied in multi-frequency code systems, shaping networks in transmitters/receivers, digital transmission systems, etc., can solve problems such as mutual interference, system performance deterioration, and sub-channel orthogonality destruction
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment Construction
[0033] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0034] According to an embodiment of a certain transmitter of the anti-fading wireless multimedia broadcasting signal framing modulation method proposed by the present invention, as figure 1 shown, follow these steps:
[0035] 1) The certain anti-fading wireless multimedia broadcasting signal transmitter forms FFT concatenated interleaving code modulation in the frequency domain after its input data bit stream undergoes RS coding, convolutional interleaving, LDPC coding, symbol modulation, and symbol interleaving Data block, FFT means Fast Discrete Fourier Transform, the length of FFT concatenated interleaved coding modulation data block is K; the coding rate of LDPC coding is 1 / 4, 1 / 2, 5 / 8, 3 / 4 and 7 / 8 One; the symbol modulation is one of QPSK, 16QAM, 32QAM and 64QAM, the symbol constellation map mapping method adopts Gray code mapping; the ...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com