Data transmission and apparatus, data processing apparatus and a neural network which utilize phase shifted, modulated, convolutable pseudo noise
US5423001A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1993 |
| Grant date | Jun 6, 1995 |
| Priority date | — |
| Expiry date | Dec 20, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J13/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A data transmission method includes a step which modulates maximal-sequence codes which are phase shifted by different phase shift quantities based upon plural data for transmission, a step which then convolutes the modulated maximal-sequence codes to obtain transmission data, and afterwards, a step which receives the transmission data and obtains a cross-correlation of the transmission data with a maximal-sequence code which has been phase shifted by the same as the maximal-sequence code which corresponds to the data for transmission. A data transmission method also includes a step which modulates maximal-sequence codes which are phase shifted by different phase shift quantities based on plural data for transmission, then a step which convolutes the modulated maximal-sequence codes to obtain transmission data. The method previously obtains a time sequence code based on a weighting factor for all data and maximal-sequence codes which are phase shifted with corresponding phase shifting quantities, then obtains a cross-correlation of the transmission data and the time sequence code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.