http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1228436-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_000c5f3b2a2edaf15b899950bcfc9f96 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04J13-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04B1-707 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04B1-707 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04J13-00 |
| filingDate | 1985-03-22^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1987-10-20^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9802dac83c6d6a09d6afed68857d477e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e738a21b0dbadfb5d901992d42d38ccc |
| publicationDate | 1987-10-20^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1228436-A |
| titleOfInvention | Code division multiplexer using direct sequence spread spectrum signal processing |
| abstract | CODE DIVISION MULTIPLEXER USING DIRECT SEQUENCE SPREAD SPECTRUM SIGNAL PROCESSING Abstract A plurality of transmitters synchronized to a common clock each transmit a data signal spread by a common bipolar pseudo-random code having a different predetermined assigned code sequence clock. A receiver, synchronized to the clock, discriminates the signal transmitted by a predetermined transmitter from signals transmitted by the others by generating a first bipolar pseudo-random code that is a replica of the common bipolar pseudo-random code and has a code sequence shift corresponding to that of the predetermined transmitter, and a second bipolar pseudo-random code and has an unassigned code sequence shift. The difference between the first and second bipolar pseudo-random code sequences, which is a trinary code code sequence, is cross-correlated with the incoming signals. The cross-correlated despreads only the signal applied by the sequence having the predetermined code sequence shift. Each receiver includes a number of correlation detectors offset from each other by a fraction of a code chip together with decision circuitry to identify cross-correlated peaks for optimum synchronization. |
| priorityDate | 1984-03-23^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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