http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110971344-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L1-0061 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L25-03318 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L1-0064 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04L25-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04L1-00 |
| filingDate | 2019-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-10-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-10-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110971344-B |
| titleOfInvention | Soft demodulation method of linear frequency modulation spread spectrum modulation technology |
| abstract | The invention provides a soft demodulation method of a linear frequency modulation spread spectrum modulation technology, which comprises FFT (fast Fourier transform) processing and orthogonal binary peak difference soft demodulation, wherein the orthogonal binary peak difference soft demodulation process comprises the following steps: s1, respectively finding out a first symbol index set with the ith bit being 0 and a second symbol index set with the ith-0 bit being 1 in the transformation result; s2, determining soft information of the demodulated ith bit according to a first maximum amplitude value in all amplitude values corresponding to the first symbol subscript set and a second maximum amplitude value in all amplitude values corresponding to the second symbol subscript set; s3, starting from i ═ 0, increment i and repeat steps S1 and S2 until all bits have been traversed. The invention has the beneficial effects that: the problem that soft information is needed in the decoding process when Turbo codes, LDPC codes, Polar codes and the like are used for replacing Hamming codes in LoRa is solved; the method provides cascade conditions for physical layer schemes such as Turbo + CSS, LDPC + CSS, Polar + CSS and the like, constructs a series of enhanced LoRa communication systems, and greatly improves the communication capacity of LoRa. |
| priorityDate | 2019-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.