System and method of uncorrelated code hopping in a communications system
US7673192B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2006 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Dec 30, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J13/0074
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system and method are used to provide uncorrelated code hopping in a communications system. A multi-bit linear shift register receives data and clocks the data fifteen times. A word assembler receives the shifted data and outputs a fifteen bit word. A mixer mixes the fifteen bit word with an numerical value of active codes to generate a mixed signal. A divider divides the mixed signal to produce a divided signal. A truncator truncates the divided signal to its seven most significant bits to produce a pseudo random hop number. A code matrix shifter circularly shifts the active codes in a code matrix based on the pseudo random hop number to produce a circularly shifted code. A transmitter transmits the circularly shifted code matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.