Underwater anti-interference transmission method based on prime digital interleaving and spinal cord coding
A transmission method and prime number technology, applied in the field of underwater anti-jamming transmission, can solve the problems of too simple design and unsatisfactory anti-jamming.
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Embodiment 1
[0103] figure 1 It is a schematic diagram of the structure and connection relationship of the anti-jamming transmission system based on the underwater anti-jamming transmission method based on prime-code interleaving and spinal code coding in the present invention.
[0104] From figure 1 It can be seen that the underwater anti-jamming transmission system relied on includes a system parameter initialization module, a sending signal processing module, an interleaving parameter control unit, a time-varying underwater acoustic channel module, and a receiving signal processing module; the sending signal processing module also includes a source An interleaving unit, a check unit, a spinal encoding unit, a channel interleaving unit, and a modulation unit; the received signal processing module includes a demodulation unit, a channel deinterleaving unit, a spinal decoding unit, a dechecking unit, and a source deinterleaving unit;
[0105] The time-varying underwater acoustic channel m...
Embodiment 2
[0177] Figure 4 It is a schematic diagram of the system composition and connection when the OFDM modulation mode is used in the actual implementation of an underwater anti-interference transmission method based on prime-code interleaving and spinal code coding.
[0178] The underwater acoustic channel is a complex time-varying fading channel, which has the characteristics of low frequency utilization and serious multipath interference. In order to make the underwater acoustic communication system have better bandwidth utilization, improve the system Multipath interference, so the Orthogonal Frequency Division Multiplexing (OFDM) technology is applied to the research of underwater communication. Orthogonal Frequency Division Multiplexing (OFDM) technology converts the frequency-selective fading caused by the channel into flat fading through multi-carrier modulation technology, and overcomes multipath interference; it also overcomes inter-symbol interference (ISI) by adding a c...
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