| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_82a9e22a923eca64a02a97f0dfb493ed |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L27-2675
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L27-2695
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L25-022
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L25-0218
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L25-0224
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L25-0232
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L25-0212 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04L25-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04B1-69
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04B7-216
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04L27-26 |
| filingDate |
2004-12-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bfea5c24edad14e3d906f8cca3d6eacc
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0e8b5939d7722892c53b0834b5786e98
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_052d47da8506027fb2f959a97bf1f234
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cacbe57f9e80e9966c3fc4129acf7e8f |
| publicationDate |
2006-12-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
KR-20060128914-A |
| titleOfInvention |
Channel Estimation for an OPDM Communication System Using Inactive Subbands |
| abstract |
For channel estimation in a spectral wireless communication system, (1) the initial frequency response estimate is based on received pilot symbols for the second set of subbands used for pilot transmission, and (2) extrapolation and interpolation. Is obtained for the first set of uniformly spaced P subbands, where P is a power of two. The channel impulse response estimate is obtained by performing a P-point IFFT on the initial frequency response estimate. The final frequency response estimate for the entire N subbands is (1) setting the low quality taps for the channel impulse response estimate to zero, (2) zero padding the channel impulse response estimate to length N, and (3) Derived by performing an N-point FFT on the zero padded channel impulse response estimate. The channel frequency / impulse response estimate may be filtered to obtain a higher quality channel estimate. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101415202-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100967058-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20190014928-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100972295-B1 |
| priorityDate |
2003-12-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |