Spread-spectrum, frequency-hopping radiotelephone system
US5408496A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1993 |
| Grant date | Apr 18, 1995 |
| Priority date | — |
| Expiry date | Jun 18, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W16/28
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multiple access communications system reuses a set of N carrier frequencies in adjacent communications sites to provide more than N minimally cross-correlated frequency-hopping communications channels. A first set of communications channels is associated with a first of the communications sites. No two of the channels in the first set employ the same frequency at the same time. A second set of communications channels is associated with a second of the adjacent communications sites. No two of the channels in the second set of channels employ the same one of the N carrier frequencies at the same time. One or more sets of the minimally cross-correlated channels are further defined so that none of the channels in such sets employ the same frequency at the same time as more than a predetermined number of the channels in another of the sets of the minimally cross-correlated frequency-hopping communications channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.