Power of two length pseudorandom noise sequence generator
US5532695A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Dec 20, 1994 |
| Grant date | Jul 2, 1996 |
| Priority date | — |
| Expiry date | Dec 20, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2207/583
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A mobile communication method is disclosed, and particularly a power of two length pseudorandom noise sequence generator is disclosed, in which a pseudorandom noise code sequence is generated to use it for a direct sequence spreading of communication signals in a spread spectrum communication system. In the PN sequence generator, a mask value and a comparison value are calculated for shifting the PN sequence output having a length of 2.sup.N as much as wanted, so that the PN sequence can be shifted as much as a predetermined value in response to the single clock signal. In order to generate a PN sequence of the desired timing, a new PN mask value is directly obtained from the current PN mask value and the offset shift value to be shifted, and at the same time, a comparison value corresponding to the mask value is obtained, whereby ultimately a PN sequence having a length of 2.sup.N after shifting the cycle as much as the desired shifting value is obtained. The present invention adopts a method of forming a new comparison value corresponding to the PN mask value by using a comparison value translator, and as a result, the conventional additional circuits for inserting an additional …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.