Low complexity concatenated modulation for multi-mode symbol number modulation, transmission method, system, and medium
By dividing the frequency domain subcarriers into sub-blocks and performing two-stage cascaded sequence modulation, the complexity of multi-mode symbol sequence modulation is reduced, solving the modulation and demodulation problem when the number of multi-mode symbol modes is large, and making it suitable for standalone sensors and IoT devices.
CN116886487BActive Publication Date: 2026-06-23GUANGZHOU CITY YU HUNG ELECTRIC WIRE & CABLE IND
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUANGZHOU CITY YU HUNG ELECTRIC WIRE & CABLE IND
- Filing Date
- 2023-07-13
- Publication Date
- 2026-06-23
AI Technical Summary
Technical Problem
When the number of multimode symbol patterns is large, the modulation and demodulation complexity of multimode symbol number modulation is too high, making it difficult to apply to practical communication systems.
Method used
The cascaded sequence modulation method is adopted to divide the frequency domain subcarriers into sub-blocks, and the complexity is reduced by two-stage cascaded sequence modulation, including multi-mode symbol mode selection and multi-mode symbol mode sequence modulation, to generate independent micro-sub-blocks for modulation.
Benefits of technology
It effectively reduces the computational complexity of modulation and demodulation, and achieves efficient multi-mode symbol sequence modulation, which is suitable for stand-alone sensors and IoT devices.
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Smart Images
Figure CN116886487B_ABST
Abstract
The present application relates to the field of wireless communication, and especially relates to a low complexity concatenated modulation method for multi-mode symbol serial number modulation, a physical layer security transmission method and a computer readable storage medium. The low complexity concatenated modulation method for multi-mode symbol serial number modulation forms a concatenated multi-mode symbol serial number modulation mode. When processing an OFDM symbol period block, all frequency domain subcarriers are first divided into subblocks, each subblock is taken as a basic modulation unit, high-dimensional serial number modulation of one subblock is reduced to low-dimensional serial number modulation of two micro-subblocks in two-level concatenated serial number modulation, and the calculation complexity of modulation and demodulation at the transmitting and receiving ends is greatly reduced. Furthermore, in the physical layer security transmission, the dimension size of the first modulated micro-subblock is taken as a physical layer security transmission parameter, and dynamic change will make the same group of information bits get different output results after multi-level serial number modulation, reduce the cracking possibility, and realize the physical layer security transmission.
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