http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109474304-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L25-03178 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L25-03006 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04B1-709 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L1-0006 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04B1-7073 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L25-03891 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04B13-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04B1-707 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L25-0256 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L1-0009 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04L1-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04L25-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04L25-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04B1-7073 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04B1-709 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04B1-707 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04B13-02 |
| filingDate | 2018-11-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-08-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-08-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109474304-B |
| titleOfInvention | Self-adaptive multi-system underwater acoustic communication system and method |
| abstract | The invention relates to a self-adaptive multi-system underwater acoustic communication system and a method, wherein different modulation modes are generated to modulate signals according to spread spectrum and OSDM (orthogonal signal division multiplexing) modulation technology; the transmitting end of the communication system comprises a modulation mode selection module, a digital modulation module, a spread spectrum modulation module, an OSDM modulation module and a data framing module, and the receiving end of the communication system comprises a synchronization module, a Doppler compensation module, a channel equalization module, a modulation mode judgment module and corresponding demodulation modules. By adopting the system, the adaptive signal modulation mode can be changed according to the change of the underwater acoustic channel, and the free switching between the single carrier modulation mode and the multi-carrier modulation mode is realized. The self-adaptive multi-system underwater acoustic communication system has low complexity, strong anti-interference, multipath resistance and Doppler frequency offset resistance, and can effectively solve the problem of unreliable signal transmission caused by underwater multipath, Doppler frequency offset and noise. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2022063657-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3975452-A1 |
| priorityDate | 2018-11-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID7156993 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID426135032 |
Total number of triples: 29.