Method of, and apparatus for, processing low power pseudo-random code sequence signals
US6097751A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 9, 1998 |
| Grant date | Aug 1, 2000 |
| Priority date | — |
| Expiry date | Jan 9, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J13/0022
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communications system includes a primary station having transmitting and receiving sections, a formatting stage for formatting messages to be transmitted by the transmitting section, and one or more secondary stations. The or each secondary station has a receiving section for receiving messages from the primary station and a transmitting section for transmitting signals as pseudo-random code sequence signals, and the primary station is adapted to receive and to simultaneously decode and detect the or each of the pseudo-random code sequence signals. The simultaneously decoding and detection operations involves implementation of a Fast Fourier Transform (FFT) in a manner that a code sequence for despreading the pseudo-random code sequence is applied within the FFT. A resulting spectrum is checked for a peak which indicates that one of the pseudo-random code sequences has been successfully decoded and detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.