Spread-spectrum high data rate system and method
US6671307B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 2, 2001 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Nov 12, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/004
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A high data rate, high processing gain, direct sequence spread spectrum system that transmits a BPSK or QPSK signal. The data which are collected and stored and forwarded N bits at a time by transmitting one of 2N pseudo random waveforms every time N bits are collected. During acquisition, product devices multiply a received spread-spectrum signal by a header chip-sequence signal. After acquisition, the product device multiply the received spread-spectrum signal by 2N chip-sequence signals to generate products, with each chip-sequence signal of the chip-sequences signals being different from other chip-sequence signals of the chip-sequence signals. Integrators integrate the products thereby forming 2N correlators, and a comparator selects a largest value from the integrators. The largest value is decoded into N bits of data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.