M-sequence generator and PN code generator with mask table for obtaining arbitrary phase shift
US6339781B1 · kind B1 · utility
29Cited by
10References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 17, 1999 |
| Grant date | Jan 15, 2002 |
| Priority date | — |
| Expiry date | May 17, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/70756
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An M-sequence generator has a linear feedback shift register, a mask table, a masked operation circuit, and a control unit. The mask table stores mask data corresponding to different phase shifts. The masked operation circuit performs logic operations on the mask data and the contents of the linear feedback shift register to obtain shifted register state data. The control unit selects the mask data, and loads the shifted register state data into the linear feedback shift register. An arbitrary phase shift is produced as a sum of phase shifts for which mask data are stored in the mask table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.