System, apparatus, and method for outputting pseudorandom noise sequences, and data recording medium
US6654404B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 31, 2000 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Apr 5, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J13/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system for outputting pseudorandom noise sequences comprises a plurality of output apparatuses. Each of the apparatuses comprise a natural number obtainer for obtaining a natural number p, a first transmission value calculator for calculating a value Y=F(p,X), a first transmitter for transmitting the value Y to the other output apparatus, a receiver for receiving a value Y′ transmitted by the other output apparatus, a second transmission value calculator for calculating a value Y″=F(p,Y′) if a function F(p,•) has not been applied to the value Y′, a second transmitter for transmitting the value Y″ to the other output apparatus, an initial value calculator for calculating an initial value Z′=F(p,Y′) if the function F(p,•) has been applied to the value Y′, a degree obtainer for obtaining a degree “r”, and a sequence output unit for outputting a sequence Z′, T(r,Z′), T(r,T(r,Z′)), T(r,T(r,T(r,Z′))), . . . having the predetermined length by repeatedly applying Chebyshev map T(r,•) to the initial value Z′.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.